Bump v0.35.6

fix chrome app and user path conflicts
Bump v0.35.5
2026-02-19 03:14:51 -05:00 · 2016-01-11 04:51:03 +00:00 · 2016-01-11 10:21:38 +08:00 · 2015-12-31 10:07:01 +08:00 · 2015-12-31 10:06:50 +08:00 · 2015-12-04 19:23:48 +08:00
776 changed files with 55720 additions and 16152 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,12 +1,21 @@
 .DS_Store
+.tags*
+/.idea/
 /build/
 /dist/
 /external_binaries/
 /out/
 /vendor/brightray/vendor/download/
+/vendor/debian_wheezy_arm-sysroot/
+/vendor/debian_wheezy_i386-sysroot/
 /vendor/python_26/
 /vendor/npm/
+/vendor/llvm/
+/vendor/llvm-build/
+/vendor/.gclient
 node_modules/
 *.xcodeproj
 *.swp
 *.pyc
+debug.log
+npm-debug.log
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
 [submodule "vendor/brightray"]
 	path = vendor/brightray
-	url = https://github.com/brightray/brightray.git
+	url = https://github.com/atom/brightray.git
 [submodule "vendor/node"]
 	path = vendor/node
 	url = https://github.com/atom/node.git
@@ -13,3 +13,12 @@
 [submodule "vendor/native_mate"]
 	path = vendor/native_mate
 	url = https://github.com/zcbenz/native-mate.git
+[submodule "vendor/crashpad"]
+	path = vendor/crashpad
+	url = https://github.com/atom/crashpad.git
+[submodule "vendor/requests"]
+	path = vendor/requests
+	url = https://github.com/kennethreitz/requests
+[submodule "vendor/boto"]
+	path = vendor/boto
+	url = https://github.com/boto/boto.git
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,15 +1,29 @@
+git:
+  depth: 10
+notifications:
+  email: false
+
 language: cpp
 compiler: clang
 os:
  - linux
  - osx
+env:
+  - TARGET_ARCH=x64
+osx_image: xcode7

-notifications:
-  email:
-    on_success: never
-    on_failure: change
+matrix:
+  include:
+    - os: linux
+      env: TARGET_ARCH=arm
+    - os: linux
+      env: TARGET_ARCH=ia32
+  allow_failures:
+    - env: TARGET_ARCH=arm
+    - env: TARGET_ARCH=ia32

 script: './script/cibuild'

-git:
-  depth: 10
+branches:
+  only:
+    - master
--- a/CODE_OF_CONDUCT.md
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,24 @@
+# Contributor Code of Conduct
+
+As contributors and maintainers of this project, and in the interest of fostering an open and welcoming community, we pledge to respect all people who contribute through reporting issues, posting feature requests, updating documentation, submitting pull requests or patches, and other activities.
+
+We are committed to making participation in this project a harassment-free experience for everyone, regardless of level of experience, gender, gender identity and expression, sexual orientation, disability, personal appearance, body size, race, ethnicity, age, religion, or nationality.
+
+Examples of unacceptable behavior by participants include:
+
+- The use of sexualized language or imagery
+- Personal attacks
+- Trolling or insulting/derogatory comments
+- Public or private harassment
+- Publishing other's private information, such as physical or electronic addresses, without explicit permission
+- Other unethical or unprofessional conduct
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+By adopting this Code of Conduct, project maintainers commit themselves to fairly and consistently applying these principles to every aspect of managing this project. Project maintainers who do not follow or enforce the Code of Conduct may be permanently removed from the project team.
+
+This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community.
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting a project maintainer at [atom@github.com](mailto:atom@github.com). All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances. Maintainers are obligated to maintain confidentiality with regard to the reporter of an incident.
+
+This Code of Conduct is adapted from the Contributor Covenant, version 1.3.0, available from http://contributor-covenant.org/version/1/3/0/
--- a/CONTRIBUTING-ko.md
+++ b/CONTRIBUTING-ko.md
@@ -0,0 +1,80 @@
+# Electron에 기여하기
+
+:+1::tada: 먼저, 이 프로젝트에 기여해주셔서 감사합니다! :tada::+1:
+
+이 프로젝트는 기여자 규약 [행동강령](CODE_OF_CONDUCT.md)을 준수합니다. 따라서 이
+프로젝트의 개발에 참여하려면 이 규약을 지켜야 합니다. 받아들일 수 없는 행위를 발견했을
+경우 atom@github.com로 보고 하십시오.
+
+다음 항목들은 Electron에 기여하는 가이드라인을 제시합니다.
+참고로 이 항목들은 그저 가이드라인에 불과하며 규칙이 아닙니다. 따라서 스스로의 적절한
+판단에 따라 이 문서의 변경을 제안할 수 있으며 변경시 pull request를 넣으면 됩니다.
+
+## 이슈 제출
+
+* [여기](https://github.com/atom/electron/issues/new)에서 새로운 이슈를 만들 수
+있습니다. 하지만 이슈를 작성하기 전에 아래의 항목들을 숙지하고 가능한한 이슈 보고에
+대해 최대한 많은 정보와 자세한 설명을 포함해야 합니다. 가능하다면 다음 항목을 포함해야
+합니다:
+  * 사용하고 있는 Electron의 버전
+  * 현재 사용중인 운영체제
+  * 가능하다면 무엇을 하려고 했고, 어떤 결과를 예측했으며, 어떤 것이 예측된대로
+  작동하지 않았는지에 대해 서술해야 합니다.
+* 추가로 다음 사항을 준수하면 이슈를 해결하는데 큰 도움이 됩니다:
+  * 스크린샷 또는 GIF 애니메이션 이미지들
+  * 터미널에 출력된 에러의 내용 또는 개발자 도구, 알림창에 뜬 내용
+  * [Cursory search](https://github.com/atom/electron/issues?utf8=✓&q=is%3Aissue+)를
+  통해 이미 비슷한 내용의 이슈가 등록되어있는지 확인
+
+## Pull Request 하기
+
+* 가능한한 스크린샷과 GIF 애니메이션 이미지를 pull request에 추가
+* CoffeeScript, JavaScript, C++과 Python등
+[참조문서에 정의된 코딩스타일](/docs-translations/ko-KR/development/coding-style.md)을
+준수
+* [문서 스타일 가이드](/docs-translations/ko-KR/styleguide.md)에 따라 문서를
+[Markdown](https://daringfireball.net/projects/markdown) 형식으로 작성.
+* 짧은, 현재 시제 커밋 메시지 사용. [커밋 메시지 스타일 가이드](#Git-커밋-메시지)를
+참고하세요
+
+## 스타일 가이드
+
+### 공통 코드
+
+* 파일 마지막에 공백 라인(newline) 추가
+* 다음 순서에 맞춰서 require 코드 작성:
+  * Node 빌트인 모듈 (`path` 같은)
+  * Electron 모듈 (`ipc`, `app` 같은)
+  * 로컬 모듈 (상대 경로상에 있는)
+* 다음 순서에 맞춰서 클래스 속성 지정:
+  * 클래스 메서드와 속성 (메서드는 `@`로 시작)
+  * 인스턴스 메서드와 속성
+* 플랫폼 종속적인 코드 자제:
+  * 파일 이름 결합시 `path.join()`을 사용.
+  * 임시 디렉터리가 필요할 땐 `/tmp` 대신 `os.tmpdir()`을 통해 접근.
+* 명시적인 함수 종료가 필요할 땐 `return` 만 사용.
+  * `return null`, `return undefined`, `null`, 또는 `undefined` 사용 X
+
+### Git 커밋 메시지
+
+* 현재 시제 사용 ("Added feature" 대신 "Add feature" 사용)
+* 필수적 분위기(imperative mood) 사용 ("Moves cursor to..." 대신 "Move cursor to..." 사용)
+* 첫 줄은 72자에 맞추거나 그 보다 적게 제한
+* 자유롭게 필요에 따라 이슈나 PR링크를 참조
+* 단순한 문서 변경일 경우 `[ci skip]`을 커밋 메시지에 추가
+* 커밋 메시지의 도입부에 의미있는 이모티콘 사용:
+  * :art: `:art:` 코드의 포맷이나 구조를 개선(추가)했을 때
+  * :racehorse: `:racehorse:` 성능을 개선했을 때
+  * :non-potable_water: `:non-potable_water:` 메모리 누수를 연결했을 때
+  * :memo: `:memo:` 문서를 작성했을 때
+  * :penguin: `:penguin:` Linux에 대한 패치를 했을 때
+  * :apple: `:apple:` Mac OS에 대한 패치를 했을 때
+  * :checkered_flag: `:checkered_flag:` Windows에 대한 패치를 했을 때
+  * :bug: `:bug:` 버그를 고쳤을 때
+  * :fire: `:fire:` 코드 또는 파일을 삭제했을 때
+  * :green_heart: `:green_heart:` CI 빌드를 고쳤을 때
+  * :white_check_mark: `:white_check_mark:` 테스트를 추가했을 때
+  * :lock: `:lock:` 보안 문제를 해결했을 때
+  * :arrow_up: `:arrow_up:` 종속성 라이브러리를 업데이트 했을 때
+  * :arrow_down: `:arrow_down:` 종속성 라이브러리를 다운그레이드 했을 때
+  * :shirt: `:shirt:` linter(코드 검사기)의 경고를 제거했을 때
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -0,0 +1,77 @@
+# Contributing to Electron
+
+:+1::tada: First off, thanks for taking the time to contribute! :tada::+1:
+
+This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md).
+By participating, you are expected to uphold this code. Please report unacceptable
+behavior to atom@github.com.
+
+The following is a set of guidelines for contributing to Electron.
+These are just guidelines, not rules, use your best judgment and feel free to
+propose changes to this document in a pull request.
+
+## Submitting Issues
+
+* You can create an issue [here](https://github.com/atom/electron/issues/new),
+but before doing that please read the notes below and include as many details as
+possible with your report. If you can, please include:
+  * The version of Electron you are using
+  * The operating system you are using
+  * If applicable, what you were doing when the issue arose and what you
+  expected to happen
+* Other things that will help resolve your issue:
+  * Screenshots and animated GIFs
+  * Error output that appears in your terminal, dev tools or as an alert
+  * Perform a [cursory search](https://github.com/atom/electron/issues?utf8=✓&q=is%3Aissue+)
+  to see if a similar issue has already been submitted
+
+## Submitting Pull Requests
+
+* Include screenshots and animated GIFs in your pull request whenever possible.
+* Follow the CoffeeScript, JavaScript, C++ and Python [coding style defined in docs](/docs/development/coding-style.md).
+* Write documentation in [Markdown](https://daringfireball.net/projects/markdown).
+  See the [Documentation Styleguide](/docs/styleguide.md).
+* Use short, present tense commit messages. See [Commit Message Styleguide](#git-commit-messages).
+
+## Styleguides
+
+### General Code
+
+* End files with a newline.
+* Place requires in the following order:
+  * Built in Node Modules (such as `path`)
+  * Built in Electron Modules (such as `ipc`, `app`)
+  * Local Modules (using relative paths)
+* Place class properties in the following order:
+  * Class methods and properties (methods starting with a `@`)
+  * Instance methods and properties
+* Avoid platform-dependent code:
+  * Use `path.join()` to concatenate filenames.
+  * Use `os.tmpdir()` rather than `/tmp` when you need to reference the
+    temporary directory.
+* Using a plain `return` when returning explicitly at the end of a function.
+  * Not `return null`, `return undefined`, `null`, or `undefined`
+
+### Git Commit Messages
+
+* Use the present tense ("Add feature" not "Added feature")
+* Use the imperative mood ("Move cursor to..." not "Moves cursor to...")
+* Limit the first line to 72 characters or less
+* Reference issues and pull requests liberally
+* When only changing documentation, include `[ci skip]` in the commit description
+* Consider starting the commit message with an applicable emoji:
+  * :art: `:art:` when improving the format/structure of the code
+  * :racehorse: `:racehorse:` when improving performance
+  * :non-potable_water: `:non-potable_water:` when plugging memory leaks
+  * :memo: `:memo:` when writing docs
+  * :penguin: `:penguin:` when fixing something on Linux
+  * :apple: `:apple:` when fixing something on Mac OS
+  * :checkered_flag: `:checkered_flag:` when fixing something on Windows
+  * :bug: `:bug:` when fixing a bug
+  * :fire: `:fire:` when removing code or files
+  * :green_heart: `:green_heart:` when fixing the CI build
+  * :white_check_mark: `:white_check_mark:` when adding tests
+  * :lock: `:lock:` when dealing with security
+  * :arrow_up: `:arrow_up:` when upgrading dependencies
+  * :arrow_down: `:arrow_down:` when downgrading dependencies
+  * :shirt: `:shirt:` when removing linter warnings
--- a/README-ko.md
+++ b/README-ko.md
@@ -0,0 +1,74 @@
+[![Electron Logo](http://electron.atom.io/images/electron-logo.svg)](http://electron.atom.io/)
+
+[![Build Status](https://travis-ci.org/atom/electron.svg?branch=master)](https://travis-ci.org/atom/electron)
+[![devDependency Status](https://david-dm.org/atom/electron/dev-status.svg)](https://david-dm.org/atom/electron#info=devDependencies)
+[![Join the Electron Community on Slack](http://atom-slack.herokuapp.com/badge.svg)](http://atom-slack.herokuapp.com/)
+
+### [Electron](https://github.com/atom/electron/) 한국어 참조문서
+
+:zap: *프레임워크 이름이 Atom Shell에서 Electron으로 변경되었습니다* :zap:
+
+Electron 프레임워크는 JavaScript, HTML 그리고 CSS를 사용하여
+Cross-Platform 데스크톱 어플리케이션을 개발할 수 있도록 해주는 프레임워크입니다.
+[Node.js](https://nodejs.org/)와 [Chromium](http://www.chromium.org)을 기반으로
+만들어졌으며 [Atom Editor](https://github.com/atom/atom)에 사용되고 있습니다.
+
+Electron에 대한 중요한 알림을 받고 싶다면 Twitter에서
+[@ElectronJS](https://twitter.com/electronjs)를 팔로우 하세요.
+
+이 프로젝트는 기여자 규약 [행동강령](CODE_OF_CONDUCT.md)을 준수합니다. 따라서 이
+프로젝트의 개발에 참여하려면 이 규약을 지켜야 합니다. 받아들일 수 없는 행위를 발견했을
+경우 atom@github.com로 보고 하십시오.
+
+## 다운로드
+
+Linux, Windows, OS X 용으로 미리 빌드된 Electron 바이너리와 디버그 심볼이 준비되어
+있습니다. [releases](https://github.com/atom/electron/releases) 페이지에서 받아 볼
+수 있습니다.
+
+또한 [`npm`](https://docs.npmjs.com/)을 통해 미리 빌드된 Electron 바이너리를 설치할
+수도 있습니다:
+
+```sh
+# $PATH에 `electron` 커맨드를 등록하고 전역에 설치합니다.
+npm install electron-prebuilt -g
+
+# 개발 의존성 모듈 형태로 설치합니다.
+npm install electron-prebuilt --save-dev
+```
+
+### 미러
+
+- [China](https://npm.taobao.org/mirrors/electron)
+
+## 참조 문서
+
+[Docs](https://github.com/atom/electron/tree/master/docs/README.md)에 개발 지침과
+API 레퍼런스가 있습니다. Electron을 빌드 하는 방법과 프로젝트에 기여하는법 또한 문서에
+포함되어 있으니 참고하시기 바랍니다.
+
+## 참조 문서 (번역)
+
+- [브라질 포르투칼어](https://github.com/atom/electron/tree/master/docs-translations/pt-BR)
+- [한국어](https://github.com/atom/electron/tree/master/docs-translations/ko-KR)
+- [일본어](https://github.com/atom/electron/tree/master/docs-translations/jp)
+- [스페인어](https://github.com/atom/electron/tree/master/docs-translations/es)
+- [중국어 간체](https://github.com/atom/electron/tree/master/docs-translations/zh-CN)
+- [중국어 번체](https://github.com/atom/electron/tree/master/docs-translations/zh-TW)
+
+## 시작하기
+
+[`atom/electron-quick-start`](https://github.com/atom/electron-quick-start)
+저장소를 클론하여 Electron을 간단히 접해볼 수 있습니다.
+
+## 커뮤니티
+
+다음 링크를 통해 커뮤니티에 질문을 올리거나 토론을 나눌 수 있습니다:
+
+- Atom 포럼의 [`electron`](http://discuss.atom.io/c/electron) 카테고리
+- Freenode 채팅의 `#atom-shell` 채널
+- Slack의 [`Atom`](http://atom-slack.herokuapp.com/) 채널
+
+[awesome-electron](https://github.com/sindresorhus/awesome-electron) 프로젝트에
+커뮤니티가 운영중인 유용한 예제 어플리케이션과 도구, 리소스가 있으니 한번 참고해 보시기
+바랍니다.
--- a/README.md
+++ b/README.md
@@ -1,22 +1,73 @@
-# Atom Shell [![Build Status](https://travis-ci.org/atom/atom-shell.svg?branch=master)](https://travis-ci.org/atom/atom-shell)
+[![Electron Logo](http://electron.atom.io/images/electron-logo.svg)](http://electron.atom.io/)

-The Atom Shell framework lets you write cross-platform desktop applications
-using JavaScript, HTML and CSS. It is based on [node.js](http://nodejs.org) and
+[![Build Status](https://travis-ci.org/atom/electron.svg?branch=master)](https://travis-ci.org/atom/electron)
+[![devDependency Status](https://david-dm.org/atom/electron/dev-status.svg)](https://david-dm.org/atom/electron#info=devDependencies)
+[![Join the Electron Community on Slack](http://atom-slack.herokuapp.com/badge.svg)](http://atom-slack.herokuapp.com/)
+
+:zap: *Formerly known as Atom Shell* :zap:
+
+The Electron framework lets you write cross-platform desktop applications
+using JavaScript, HTML and CSS. It is based on [Node.js](https://nodejs.org/) and
 [Chromium](http://www.chromium.org) and is used in the [Atom
 editor](https://github.com/atom/atom).

+Follow [@ElectronJS](https://twitter.com/electronjs) on Twitter for important
+announcements.
+
+This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md).
+By participating, you are expected to uphold this code. Please report unacceptable
+behavior to atom@github.com.
+
 ## Downloads

-Prebuilt binaries of atom-shell for Linux, Windows and Mac can be found on the
-[releases](https://github.com/atom/atom-shell/releases) page.
+Prebuilt binaries and debug symbols of Electron for Linux, Windows and OS X can
+be found on the [releases](https://github.com/atom/electron/releases) page.
+
+You can also use [`npm`](https://docs.npmjs.com/) to install prebuilt electron
+binaries:
+
+```sh
+# Install the `electron` command globally in your $PATH
+npm install electron-prebuilt -g
+
+# Install as a development dependency
+npm install electron-prebuilt --save-dev
+```
+
+### Mirrors
+
+- [China](https://npm.taobao.org/mirrors/electron)

 ## Documentation

 Guides and the API reference are located in the
-[docs](https://github.com/atom/atom-shell/tree/master/docs) directory. It also
-contains documents describing how to build and contribute to atom-shell.
+[docs](https://github.com/atom/electron/tree/master/docs) directory. It also
+contains documents describing how to build and contribute to Electron.
+
+## Documentation Translations
+
+- [Brazilian Portuguese](https://github.com/atom/electron/tree/master/docs-translations/pt-BR)
+- [Korean](https://github.com/atom/electron/tree/master/docs-translations/ko-KR)
+- [Japanese](https://github.com/atom/electron/tree/master/docs-translations/jp)
+- [Spanish](https://github.com/atom/electron/tree/master/docs-translations/es)
+- [Simplified Chinese](https://github.com/atom/electron/tree/master/docs-translations/zh-CN)
+- [Traditional Chinese](https://github.com/atom/electron/tree/master/docs-translations/zh-TW)
+- [Russian](https://github.com/atom/electron/tree/master/docs-translations/ru-RU)
+
+## Quick Start
+
+Clone and run the [`atom/electron-quick-start`](https://github.com/atom/electron-quick-start)
+repository to see a minimal Electron app in action.

 ## Community

-There is an [`atom-shell` category on the Atom forums](http://discuss.atom.io/category/atom-shell)
-as well as an `#atom-shell` channel on Freenode.
+You can ask questions and interact with the community in the following
+locations:
+- [`electron`](http://discuss.atom.io/c/electron) category on the Atom
+forums
+- `#atom-shell` channel on Freenode
+- [`Atom`](http://atom-slack.herokuapp.com/) channel on Slack
+- [`electron-br`](https://electron-br.slack.com) *(Brazilian Portuguese)*
+
+Check out [awesome-electron](https://github.com/sindresorhus/awesome-electron)
+for a community maintained list of useful example apps, tools and resources.
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,28 +0,0 @@
-# appveyor file
-# http://www.appveyor.com/docs/appveyor-yml
-version: "{build}"
-
-init:
-  - git config --global core.autocrlf input
-
-environment:
-  matrix:
-    - nodejs_version: 0.10
-
-platform:
-  - x86
-
-install:
-  - ps: Install-Product node $env:nodejs_version
-  - cmd: SET PATH=C:\Program Files (x86)\MSBuild\12.0\bin\;%PATH%
-  - cmd: SET PATH=C:\python27;%PATH%
-  - cmd: python script/bootstrap.py
-  - cmd: python script/build.py -c Debug
-
-test_script:
-  - node --version
-  - npm --version
-  - cmd: python script/cpplint.py
-  - cmd: python script/coffeelint.py
-
-build: off
--- a/atom.gyp
+++ b/atom.gyp
--- a/atom/app/atom_content_client.cc
+++ b/atom/app/atom_content_client.cc
@@ -7,10 +7,63 @@
 #include <string>
 #include <vector>

+#include "atom/common/atom_version.h"
 #include "atom/common/chrome_version.h"
+#include "atom/common/options_switches.h"
+#include "base/command_line.h"
+#include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "content/public/common/content_constants.h"
+#include "content/public/common/pepper_plugin_info.h"
+#include "content/public/common/user_agent.h"
+#include "ppapi/shared_impl/ppapi_permissions.h"

 namespace atom {

+namespace {
+
+content::PepperPluginInfo CreatePepperFlashInfo(const base::FilePath& path,
+                                                const std::string& version) {
+  content::PepperPluginInfo plugin;
+
+  plugin.is_out_of_process = true;
+  plugin.name = content::kFlashPluginName;
+  plugin.path = path;
+  plugin.permissions = ppapi::PERMISSION_ALL_BITS;
+
+  std::vector<std::string> flash_version_numbers;
+  base::SplitString(version, '.', &flash_version_numbers);
+  if (flash_version_numbers.size() < 1)
+    flash_version_numbers.push_back("11");
+  // |SplitString()| puts in an empty string given an empty string. :(
+  else if (flash_version_numbers[0].empty())
+    flash_version_numbers[0] = "11";
+  if (flash_version_numbers.size() < 2)
+    flash_version_numbers.push_back("2");
+  if (flash_version_numbers.size() < 3)
+    flash_version_numbers.push_back("999");
+  if (flash_version_numbers.size() < 4)
+    flash_version_numbers.push_back("999");
+  // E.g., "Shockwave Flash 10.2 r154":
+  plugin.description = plugin.name + " " + flash_version_numbers[0] + "." +
+      flash_version_numbers[1] + " r" + flash_version_numbers[2];
+  plugin.version = JoinString(flash_version_numbers, '.');
+  content::WebPluginMimeType swf_mime_type(
+      content::kFlashPluginSwfMimeType,
+      content::kFlashPluginSwfExtension,
+      content::kFlashPluginSwfDescription);
+  plugin.mime_types.push_back(swf_mime_type);
+  content::WebPluginMimeType spl_mime_type(
+      content::kFlashPluginSplMimeType,
+      content::kFlashPluginSplExtension,
+      content::kFlashPluginSplDescription);
+  plugin.mime_types.push_back(spl_mime_type);
+
+  return plugin;
+}
+
+}  // namespace
+
 AtomContentClient::AtomContentClient() {
 }

@@ -21,10 +74,41 @@ std::string AtomContentClient::GetProduct() const {
  return "Chrome/" CHROME_VERSION_STRING;
 }

+std::string AtomContentClient::GetUserAgent() const {
+  return content::BuildUserAgentFromProduct(
+      "Chrome/" CHROME_VERSION_STRING " "
+      ATOM_PRODUCT_NAME "/" ATOM_VERSION_STRING);
+}
+
 void AtomContentClient::AddAdditionalSchemes(
    std::vector<std::string>* standard_schemes,
    std::vector<std::string>* savable_schemes) {
+  auto command_line = base::CommandLine::ForCurrentProcess();
+  auto custom_schemes = command_line->GetSwitchValueASCII(
+      switches::kRegisterStandardSchemes);
+  if (!custom_schemes.empty()) {
+    std::vector<std::string> schemes;
+    base::SplitString(custom_schemes, ',', &schemes);
+    standard_schemes->insert(standard_schemes->end(),
+                             schemes.begin(),
+                             schemes.end());
+  }
  standard_schemes->push_back("chrome-extension");
 }

+void AtomContentClient::AddPepperPlugins(
+    std::vector<content::PepperPluginInfo>* plugins) {
+  auto command_line = base::CommandLine::ForCurrentProcess();
+  auto flash_path = command_line->GetSwitchValuePath(
+      switches::kPpapiFlashPath);
+  if (flash_path.empty())
+    return;
+
+  auto flash_version = command_line->GetSwitchValueASCII(
+      switches::kPpapiFlashVersion);
+
+  plugins->push_back(
+      CreatePepperFlashInfo(flash_path, flash_version));
+}
+
 }  // namespace atom
--- a/atom/app/atom_content_client.h
+++ b/atom/app/atom_content_client.h
@@ -19,10 +19,13 @@ class AtomContentClient : public brightray::ContentClient {

 protected:
  // content::ContentClient:
-  virtual std::string GetProduct() const OVERRIDE;
-  virtual void AddAdditionalSchemes(
+  std::string GetProduct() const override;
+  std::string GetUserAgent() const override;
+  void AddAdditionalSchemes(
      std::vector<std::string>* standard_schemes,
-      std::vector<std::string>* savable_schemes) OVERRIDE;
+      std::vector<std::string>* savable_schemes) override;
+  void AddPepperPlugins(
+      std::vector<content::PepperPluginInfo>* plugins) override;

 private:
  DISALLOW_COPY_AND_ASSIGN(AtomContentClient);
--- a/atom/app/atom_library_main.cc
+++ b/atom/app/atom_library_main.cc
@@ -1,18 +0,0 @@
-// Copyright (c) 2013 GitHub, Inc.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#include "atom/app/atom_library_main.h"
-
-#include "atom/app/atom_main_delegate.h"
-#include "content/public/app/content_main.h"
-
-#if defined(OS_MACOSX)
-int AtomMain(int argc, const char* argv[]) {
-  atom::AtomMainDelegate delegate;
-  content::ContentMainParams params(&delegate);
-  params.argc = argc;
-  params.argv = argv;
-  return content::ContentMain(params);
-}
-#endif  // OS_MACOSX
--- a/atom/app/atom_library_main.h
+++ b/atom/app/atom_library_main.h
@@ -11,6 +11,9 @@
 extern "C" {
 __attribute__((visibility("default")))
 int AtomMain(int argc, const char* argv[]);
+
+__attribute__((visibility("default")))
+int AtomInitializeICUandStartNode(int argc, char *argv[]);
 }
 #endif  // OS_MACOSX

--- a/atom/app/atom_library_main.mm
+++ b/atom/app/atom_library_main.mm
@@ -0,0 +1,38 @@
+// Copyright (c) 2013 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/atom_library_main.h"
+
+#include "atom/app/atom_main_delegate.h"
+#include "atom/app/node_main.h"
+#include "atom/common/atom_command_line.h"
+#include "base/at_exit.h"
+#include "base/i18n/icu_util.h"
+#include "base/mac/bundle_locations.h"
+#include "base/mac/scoped_nsautorelease_pool.h"
+#include "brightray/common/mac/main_application_bundle.h"
+#include "content/public/app/content_main.h"
+
+#if defined(OS_MACOSX)
+int AtomMain(int argc, const char* argv[]) {
+  atom::AtomMainDelegate delegate;
+  content::ContentMainParams params(&delegate);
+  params.argc = argc;
+  params.argv = argv;
+  atom::AtomCommandLine::Init(argc, argv);
+  return content::ContentMain(params);
+}
+
+int AtomInitializeICUandStartNode(int argc, char *argv[]) {
+  base::AtExitManager atexit_manager;
+  base::mac::ScopedNSAutoreleasePool pool;
+  base::mac::SetOverrideFrameworkBundlePath(
+      brightray::MainApplicationBundlePath()
+          .Append("Contents")
+          .Append("Frameworks")
+          .Append(ATOM_PRODUCT_NAME " Framework.framework"));
+  base::i18n::InitializeICU();
+  return atom::NodeMain(argc, argv);
+}
+#endif  // OS_MACOSX
--- a/atom/app/atom_main.cc
+++ b/atom/app/atom_main.cc
@@ -5,7 +5,6 @@
 #include "atom/app/atom_main.h"

 #include <stdlib.h>
-#include <string.h>

 #if defined(OS_WIN)
 #include <stdio.h>
@@ -13,11 +12,14 @@
 #include <fcntl.h>

 #include <windows.h>
+#include <shellscalingapi.h>
+#include <tchar.h>
 #include <shellapi.h>

 #include "atom/app/atom_main_delegate.h"
 #include "atom/common/crash_reporter/win/crash_service_main.h"
 #include "base/environment.h"
+#include "base/win/windows_version.h"
 #include "content/public/app/startup_helper_win.h"
 #include "sandbox/win/src/sandbox_types.h"
 #include "ui/gfx/win/dpi.h"
@@ -28,71 +30,133 @@
 #include "atom/app/atom_library_main.h"
 #endif  // defined(OS_MACOSX)

-// Declaration of node::Start.
-namespace node {
-int Start(int argc, char *argv[]);
+#include "atom/app/node_main.h"
+#include "atom/common/atom_command_line.h"
+#include "base/at_exit.h"
+#include "base/i18n/icu_util.h"
+
+namespace {
+
+const char* kRunAsNode = "ELECTRON_RUN_AS_NODE";
+const char* kOldRunAsNode = "ATOM_SHELL_INTERNAL_RUN_AS_NODE";
+
+bool IsEnvSet(const char* name) {
+#if defined(OS_WIN)
+  size_t required_size;
+  getenv_s(&required_size, nullptr, 0, name);
+  return required_size != 0;
+#else
+  char* indicator = getenv(name);
+  return indicator && indicator[0] != '\0';
+#endif
+}
+
+bool IsRunAsNode() {
+  return IsEnvSet(kRunAsNode) || IsEnvSet(kOldRunAsNode);
 }

 #if defined(OS_WIN)
+bool IsCygwin() {
+  std::string os;
+  scoped_ptr<base::Environment> env(base::Environment::Create());
+  return env->GetVar("OS", &os) && os == "cygwin";
+}

+// Win8.1 supports monitor-specific DPI scaling.
+bool SetProcessDpiAwarenessWrapper(PROCESS_DPI_AWARENESS value) {
+  typedef HRESULT(WINAPI *SetProcessDpiAwarenessPtr)(PROCESS_DPI_AWARENESS);
+  SetProcessDpiAwarenessPtr set_process_dpi_awareness_func =
+      reinterpret_cast<SetProcessDpiAwarenessPtr>(
+          GetProcAddress(GetModuleHandleA("user32.dll"),
+                         "SetProcessDpiAwarenessInternal"));
+  if (set_process_dpi_awareness_func) {
+    HRESULT hr = set_process_dpi_awareness_func(value);
+    if (SUCCEEDED(hr)) {
+      VLOG(1) << "SetProcessDpiAwareness succeeded.";
+      return true;
+    } else if (hr == E_ACCESSDENIED) {
+      LOG(ERROR) << "Access denied error from SetProcessDpiAwareness. "
+          "Function called twice, or manifest was used.";
+    }
+  }
+  return false;
+}
+
+// This function works for Windows Vista through Win8. Win8.1 must use
+// SetProcessDpiAwareness[Wrapper].
+BOOL SetProcessDPIAwareWrapper() {
+  typedef BOOL(WINAPI *SetProcessDPIAwarePtr)(VOID);
+  SetProcessDPIAwarePtr set_process_dpi_aware_func =
+      reinterpret_cast<SetProcessDPIAwarePtr>(
+      GetProcAddress(GetModuleHandleA("user32.dll"),
+                      "SetProcessDPIAware"));
+  return set_process_dpi_aware_func &&
+    set_process_dpi_aware_func();
+}
+
+void EnableHighDPISupport() {
+  if (!SetProcessDpiAwarenessWrapper(PROCESS_SYSTEM_DPI_AWARE)) {
+    SetProcessDPIAwareWrapper();
+  }
+}
+#endif
+
+}  // namespace
+
+#if defined(OS_WIN)
 int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE, wchar_t* cmd, int) {
  int argc = 0;
  wchar_t** wargv = ::CommandLineToArgvW(::GetCommandLineW(), &argc);

-  scoped_ptr<base::Environment> env(base::Environment::Create());
-
  // Make output work in console if we are not in cygiwn.
-  std::string os;
-  if (env->GetVar("OS", &os) && os != "cygwin") {
+  if (!IsCygwin() && !IsEnvSet("ELECTRON_NO_ATTACH_CONSOLE")) {
    AttachConsole(ATTACH_PARENT_PROCESS);

    FILE* dontcare;
    freopen_s(&dontcare, "CON", "w", stdout);
    freopen_s(&dontcare, "CON", "w", stderr);
-    freopen_s(&dontcare, "CON", "r", stdin);
  }

-  std::string node_indicator, crash_service_indicator;
-  if (env->GetVar("ATOM_SHELL_INTERNAL_RUN_AS_NODE", &node_indicator) &&
-      node_indicator == "1") {
-    // Convert argv to to UTF8
-    char** argv = new char*[argc];
-    for (int i = 0; i < argc; i++) {
-      // Compute the size of the required buffer
-      DWORD size = WideCharToMultiByte(CP_UTF8,
+  // Convert argv to to UTF8
+  char** argv = new char*[argc];
+  for (int i = 0; i < argc; i++) {
+    // Compute the size of the required buffer
+    DWORD size = WideCharToMultiByte(CP_UTF8,
+                                     0,
+                                     wargv[i],
+                                     -1,
+                                     NULL,
+                                     0,
+                                     NULL,
+                                     NULL);
+    if (size == 0) {
+      // This should never happen.
+      fprintf(stderr, "Could not convert arguments to utf8.");
+      exit(1);
+    }
+    // Do the actual conversion
+    argv[i] = new char[size];
+    DWORD result = WideCharToMultiByte(CP_UTF8,
                                       0,
                                       wargv[i],
                                       -1,
-                                       NULL,
-                                       0,
+                                       argv[i],
+                                       size,
                                       NULL,
                                       NULL);
-      if (size == 0) {
-        // This should never happen.
-        fprintf(stderr, "Could not convert arguments to utf8.");
-        exit(1);
-      }
-      // Do the actual conversion
-      argv[i] = new char[size];
-      DWORD result = WideCharToMultiByte(CP_UTF8,
-                                         0,
-                                         wargv[i],
-                                         -1,
-                                         argv[i],
-                                         size,
-                                         NULL,
-                                         NULL);
-      if (result == 0) {
-        // This should never happen.
-        fprintf(stderr, "Could not convert arguments to utf8.");
-        exit(1);
-      }
+    if (result == 0) {
+      // This should never happen.
+      fprintf(stderr, "Could not convert arguments to utf8.");
+      exit(1);
    }
-    // Now that conversion is done, we can finally start.
-    return node::Start(argc, argv);
-  } else if (env->GetVar("ATOM_SHELL_INTERNAL_CRASH_SERVICE",
-                         &crash_service_indicator) &&
-      crash_service_indicator == "1") {
+  }
+
+  if (IsRunAsNode()) {
+    // Now that argv conversion is done, we can finally start.
+    base::AtExitManager atexit_manager;
+    base::i18n::InitializeICU();
+    return atom::NodeMain(argc, argv);
+  } else if (IsEnvSet("ATOM_SHELL_INTERNAL_CRASH_SERVICE")) {
    return crash_service::Main(cmd);
  }

@@ -100,35 +164,42 @@ int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE, wchar_t* cmd, int) {
  content::InitializeSandboxInfo(&sandbox_info);
  atom::AtomMainDelegate delegate;

-  // Now chrome relies on a regkey to enable high dpi support.
-  gfx::EnableHighDPISupport();
+  // We don't want to set DPI awareness on pre-Win7 because we don't support
+  // DirectWrite there. GDI fonts are kerned very badly, so better to leave
+  // DPI-unaware and at effective 1.0. See also ShouldUseDirectWrite().
+  if (base::win::GetVersion() >= base::win::VERSION_WIN7)
+    EnableHighDPISupport();

  content::ContentMainParams params(&delegate);
  params.instance = instance;
  params.sandbox_info = &sandbox_info;
+  atom::AtomCommandLine::Init(argc, argv);
  return content::ContentMain(params);
 }

 #elif defined(OS_LINUX)  // defined(OS_WIN)

 int main(int argc, const char* argv[]) {
-  char* node_indicator = getenv("ATOM_SHELL_INTERNAL_RUN_AS_NODE");
-  if (node_indicator != NULL && strcmp(node_indicator, "1") == 0)
-    return node::Start(argc, const_cast<char**>(argv));
+  if (IsRunAsNode()) {
+    base::i18n::InitializeICU();
+    base::AtExitManager atexit_manager;
+    return atom::NodeMain(argc, const_cast<char**>(argv));
+  }

  atom::AtomMainDelegate delegate;
  content::ContentMainParams params(&delegate);
  params.argc = argc;
  params.argv = argv;
+  atom::AtomCommandLine::Init(argc, argv);
  return content::ContentMain(params);
 }

 #else  // defined(OS_LINUX)

 int main(int argc, const char* argv[]) {
-  char* node_indicator = getenv("ATOM_SHELL_INTERNAL_RUN_AS_NODE");
-  if (node_indicator != NULL && strcmp(node_indicator, "1") == 0)
-    return node::Start(argc, const_cast<char**>(argv));
+  if (IsRunAsNode()) {
+    return AtomInitializeICUandStartNode(argc, const_cast<char**>(argv));
+  }

  return AtomMain(argc, argv);
 }
--- a/atom/app/atom_main_delegate.cc
+++ b/atom/app/atom_main_delegate.cc
@@ -5,20 +5,32 @@
 #include "atom/app/atom_main_delegate.h"

 #include <string>
+#include <iostream>

 #include "atom/app/atom_content_client.h"
 #include "atom/browser/atom_browser_client.h"
 #include "atom/common/google_api_key.h"
 #include "atom/renderer/atom_renderer_client.h"
+#include "atom/utility/atom_content_utility_client.h"
 #include "base/command_line.h"
 #include "base/debug/stack_trace.h"
 #include "base/environment.h"
 #include "base/logging.h"
+#include "chrome/common/chrome_paths.h"
 #include "content/public/common/content_switches.h"
 #include "ui/base/resource/resource_bundle.h"

 namespace atom {

+namespace {
+
+bool IsBrowserProcess(base::CommandLine* cmd) {
+  std::string process_type = cmd->GetSwitchValueASCII(switches::kProcessType);
+  return process_type.empty();
+}
+
+}  // namespace
+
 AtomMainDelegate::AtomMainDelegate() {
 }

@@ -26,27 +38,49 @@ AtomMainDelegate::~AtomMainDelegate() {
 }

 bool AtomMainDelegate::BasicStartupComplete(int* exit_code) {
-  // Disable logging out to debug.log on Windows
-#if defined(OS_WIN)
+  auto command_line = base::CommandLine::ForCurrentProcess();
+
  logging::LoggingSettings settings;
+#if defined(OS_WIN)
+  // On Windows the terminal returns immediately, so we add a new line to
+  // prevent output in the same line as the prompt.
+  if (IsBrowserProcess(command_line))
+    std::wcout << std::endl;
 #if defined(DEBUG)
+  // Print logging to debug.log on Windows
  settings.logging_dest = logging::LOG_TO_ALL;
  settings.log_file = L"debug.log";
  settings.lock_log = logging::LOCK_LOG_FILE;
  settings.delete_old = logging::DELETE_OLD_LOG_FILE;
 #else
  settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
-#endif
+#endif  // defined(DEBUG)
+#else  // defined(OS_WIN)
+  settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
+#endif  // !defined(OS_WIN)
+
+  // Only enable logging when --enable-logging is specified.
+  scoped_ptr<base::Environment> env(base::Environment::Create());
+  if (!command_line->HasSwitch(switches::kEnableLogging) &&
+      !env->HasVar("ELECTRON_ENABLE_LOGGING")) {
+    settings.logging_dest = logging::LOG_NONE;
+    logging::SetMinLogLevel(logging::LOG_NUM_SEVERITIES);
+  }
+
  logging::InitLogging(settings);
-#endif  // defined(OS_WIN)

  // Logging with pid and timestamp.
  logging::SetLogItems(true, false, true, false);

  // Enable convient stack printing.
+  bool enable_stack_dumping = env->HasVar("ELECTRON_ENABLE_STACK_DUMPING");
 #if defined(DEBUG) && defined(OS_LINUX)
-  base::debug::EnableInProcessStackDumping();
+  enable_stack_dumping = true;
 #endif
+  if (enable_stack_dumping)
+    base::debug::EnableInProcessStackDumping();
+
+  chrome::RegisterPathProvider();

  return brightray::MainDelegate::BasicStartupComplete(exit_code);
 }
@@ -59,38 +93,28 @@ void AtomMainDelegate::PreSandboxStartup() {
  if (!env->HasVar("GOOGLE_API_KEY"))
    env->SetVar("GOOGLE_API_KEY", GOOGLEAPIS_API_KEY);

-  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  auto command_line = base::CommandLine::ForCurrentProcess();
  std::string process_type = command_line->GetSwitchValueASCII(
      switches::kProcessType);

+  if (process_type == switches::kUtilityProcess) {
+    AtomContentUtilityClient::PreSandboxStartup();
+  }
+
  // Only append arguments for browser process.
-  if (!process_type.empty())
+  if (!IsBrowserProcess(command_line))
    return;

-  // Add a flag to mark the start of switches added by atom-shell.
-  command_line->AppendSwitch("atom-shell-switches-start");
-
-#if defined(OS_WIN)
-  // Disable the LegacyRenderWidgetHostHWND, it made frameless windows unable
-  // to move and resize. We may consider enabling it again after upgraded to
-  // Chrome 38, which should have fixed the problem.
-  command_line->AppendSwitch(switches::kDisableLegacyIntermediateWindow);
-#endif
-
  // Disable renderer sandbox for most of node's functions.
  command_line->AppendSwitch(switches::kNoSandbox);

+  // Allow file:// URIs to read other file:// URIs by default.
+  command_line->AppendSwitch(switches::kAllowFileAccessFromFiles);
+
 #if defined(OS_MACOSX)
  // Enable AVFoundation.
  command_line->AppendSwitch("enable-avfoundation");
 #endif
-
-  // Add a flag to mark the end of switches added by atom-shell.
-  command_line->AppendSwitch("atom-shell-switches-end");
-}
-
-void AtomMainDelegate::ProcessExiting(const std::string& process_type) {
-  LOG(ERROR) << "ProcessExiting: " << process_type;
 }

 content::ContentBrowserClient* AtomMainDelegate::CreateContentBrowserClient() {
@@ -104,6 +128,11 @@ content::ContentRendererClient*
  return renderer_client_.get();
 }

+content::ContentUtilityClient* AtomMainDelegate::CreateContentUtilityClient() {
+  utility_client_.reset(new AtomContentUtilityClient);
+  return utility_client_.get();
+}
+
 scoped_ptr<brightray::ContentClient> AtomMainDelegate::CreateContentClient() {
  return scoped_ptr<brightray::ContentClient>(new AtomContentClient).Pass();
 }
@@ -115,7 +144,7 @@ void AtomMainDelegate::AddDataPackFromPath(
      pak_dir.Append(FILE_PATH_LITERAL("ui_resources_200_percent.pak")),
      ui::SCALE_FACTOR_200P);
  bundle->AddDataPackFromPath(
-      pak_dir.Append(FILE_PATH_LITERAL("webkit_resources_200_percent.pak")),
+      pak_dir.Append(FILE_PATH_LITERAL("content_resources_200_percent.pak")),
      ui::SCALE_FACTOR_200P);
 #endif
 }
--- a/atom/app/atom_main_delegate.h
+++ b/atom/app/atom_main_delegate.h
@@ -17,26 +17,26 @@ class AtomMainDelegate : public brightray::MainDelegate {

 protected:
  // content::ContentMainDelegate:
-  virtual bool BasicStartupComplete(int* exit_code) OVERRIDE;
-  virtual void PreSandboxStartup() OVERRIDE;
-  virtual void ProcessExiting(const std::string& process_type) OVERRIDE;
-  virtual content::ContentBrowserClient* CreateContentBrowserClient() OVERRIDE;
-  virtual content::ContentRendererClient*
-      CreateContentRendererClient() OVERRIDE;
+  bool BasicStartupComplete(int* exit_code) override;
+  void PreSandboxStartup() override;
+  content::ContentBrowserClient* CreateContentBrowserClient() override;
+  content::ContentRendererClient* CreateContentRendererClient() override;
+  content::ContentUtilityClient* CreateContentUtilityClient() override;

  // brightray::MainDelegate:
-  virtual scoped_ptr<brightray::ContentClient> CreateContentClient() OVERRIDE;
-  virtual void AddDataPackFromPath(
-      ui::ResourceBundle* bundle, const base::FilePath& pak_dir) OVERRIDE;
+  scoped_ptr<brightray::ContentClient> CreateContentClient() override;
+  void AddDataPackFromPath(
+      ui::ResourceBundle* bundle, const base::FilePath& pak_dir) override;
 #if defined(OS_MACOSX)
-  virtual void OverrideChildProcessPath() OVERRIDE;
-  virtual void OverrideFrameworkBundlePath() OVERRIDE;
+  void OverrideChildProcessPath() override;
+  void OverrideFrameworkBundlePath() override;
 #endif

 private:
  brightray::ContentClient content_client_;
  scoped_ptr<content::ContentBrowserClient> browser_client_;
  scoped_ptr<content::ContentRendererClient> renderer_client_;
+  scoped_ptr<content::ContentUtilityClient> utility_client_;

  DISALLOW_COPY_AND_ASSIGN(AtomMainDelegate);
 };
--- a/atom/app/atom_main_delegate_mac.mm
+++ b/atom/app/atom_main_delegate_mac.mm
@@ -1,4 +1,4 @@
-// Copyright (c) 2013 GitHub, Inc.
+// Copyright (c) 2014 GitHub, Inc.
 // Use of this source code is governed by the MIT license that can be
 // found in the LICENSE file.

@@ -6,7 +6,9 @@

 #include "base/mac/bundle_locations.h"
 #include "base/files/file_path.h"
+#include "base/files/file_util.h"
 #include "base/path_service.h"
+#include "brightray/common/application_info.h"
 #include "brightray/common/mac/main_application_bundle.h"
 #include "content/public/common/content_paths.h"

@@ -19,18 +21,30 @@ base::FilePath GetFrameworksPath() {
                                               .Append("Frameworks");
 }

+base::FilePath GetHelperAppPath(const base::FilePath& frameworks_path,
+                                const std::string& name) {
+  return frameworks_path.Append(name + " Helper.app")
+                        .Append("Contents")
+                        .Append("MacOS")
+                        .Append(name + " Helper");
+}
+
 }  // namespace

 void AtomMainDelegate::OverrideFrameworkBundlePath() {
  base::mac::SetOverrideFrameworkBundlePath(
-      GetFrameworksPath().Append("Atom Framework.framework"));
+      GetFrameworksPath().Append(ATOM_PRODUCT_NAME " Framework.framework"));
 }

 void AtomMainDelegate::OverrideChildProcessPath() {
-  base::FilePath helper_path = GetFrameworksPath().Append("Atom Helper.app")
-                                                  .Append("Contents")
-                                                  .Append("MacOS")
-                                                  .Append("Atom Helper");
+  base::FilePath frameworks_path = GetFrameworksPath();
+  base::FilePath helper_path = GetHelperAppPath(frameworks_path,
+                                                ATOM_PRODUCT_NAME);
+  if (!base::PathExists(helper_path))
+    helper_path = GetHelperAppPath(frameworks_path,
+                                   brightray::GetApplicationName());
+  if (!base::PathExists(helper_path))
+    LOG(FATAL) << "Unable to find helper app";
  PathService::Override(content::CHILD_PROCESS_EXE, helper_path);
 }

--- a/atom/app/node_main.cc
+++ b/atom/app/node_main.cc
@@ -0,0 +1,74 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/node_main.h"
+
+#include "atom/app/uv_task_runner.h"
+#include "atom/browser/javascript_environment.h"
+#include "atom/browser/node_debugger.h"
+#include "base/command_line.h"
+#include "atom/common/node_includes.h"
+#include "base/thread_task_runner_handle.h"
+#include "gin/array_buffer.h"
+#include "gin/public/isolate_holder.h"
+#include "gin/v8_initializer.h"
+
+namespace atom {
+
+int NodeMain(int argc, char *argv[]) {
+  base::CommandLine::Init(argc, argv);
+
+  int exit_code = 1;
+  {
+    // Feed gin::PerIsolateData with a task runner.
+    argv = uv_setup_args(argc, argv);
+    uv_loop_t* loop = uv_default_loop();
+    scoped_refptr<UvTaskRunner> uv_task_runner(new UvTaskRunner(loop));
+    base::ThreadTaskRunnerHandle handle(uv_task_runner);
+
+    gin::V8Initializer::LoadV8Snapshot();
+    gin::V8Initializer::LoadV8Natives();
+    JavascriptEnvironment gin_env;
+
+    int exec_argc;
+    const char** exec_argv;
+    node::Init(&argc, const_cast<const char**>(argv), &exec_argc, &exec_argv);
+
+    node::Environment* env = node::CreateEnvironment(
+        gin_env.isolate(), loop, gin_env.context(), argc, argv,
+        exec_argc, exec_argv);
+
+    // Start our custom debugger implementation.
+    NodeDebugger node_debugger(gin_env.isolate());
+    if (node_debugger.IsRunning())
+      env->AssignToContext(v8::Debug::GetDebugContext());
+
+    node::LoadEnvironment(env);
+
+    bool more;
+    do {
+      more = uv_run(env->event_loop(), UV_RUN_ONCE);
+      if (more == false) {
+        node::EmitBeforeExit(env);
+
+        // Emit `beforeExit` if the loop became alive either after emitting
+        // event, or after running some callbacks.
+        more = uv_loop_alive(env->event_loop());
+        if (uv_run(env->event_loop(), UV_RUN_NOWAIT) != 0)
+          more = true;
+      }
+    } while (more == true);
+
+    exit_code = node::EmitExit(env);
+    node::RunAtExit(env);
+
+    env->Dispose();
+  }
+
+  v8::V8::Dispose();
+
+  return exit_code;
+}
+
+}  // namespace atom
--- a/atom/app/node_main.h
+++ b/atom/app/node_main.h
@@ -0,0 +1,14 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_NODE_MAIN_H_
+#define ATOM_APP_NODE_MAIN_H_
+
+namespace atom {
+
+int NodeMain(int argc, char *argv[]);
+
+}  // namespace atom
+
+#endif  // ATOM_APP_NODE_MAIN_H_
--- a/atom/app/uv_task_runner.cc
+++ b/atom/app/uv_task_runner.cc
@@ -0,0 +1,60 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/uv_task_runner.h"
+
+#include "base/stl_util.h"
+
+namespace atom {
+
+UvTaskRunner::UvTaskRunner(uv_loop_t* loop) : loop_(loop) {
+}
+
+UvTaskRunner::~UvTaskRunner() {
+  for (auto& iter : tasks_) {
+    uv_unref(reinterpret_cast<uv_handle_t*>(iter.first));
+    delete iter.first;
+  }
+}
+
+bool UvTaskRunner::PostDelayedTask(const tracked_objects::Location& from_here,
+                                   const base::Closure& task,
+                                   base::TimeDelta delay) {
+  uv_timer_t* timer = new uv_timer_t;
+  timer->data = this;
+  uv_timer_init(loop_, timer);
+  uv_timer_start(timer, UvTaskRunner::OnTimeout, delay.InMilliseconds(), 0);
+  tasks_[timer] = task;
+  return true;
+}
+
+bool UvTaskRunner::RunsTasksOnCurrentThread() const {
+  return true;
+}
+
+bool UvTaskRunner::PostNonNestableDelayedTask(
+    const tracked_objects::Location& from_here,
+    const base::Closure& task,
+    base::TimeDelta delay) {
+  return PostDelayedTask(from_here, task, delay);;
+}
+
+// static
+void UvTaskRunner::OnTimeout(uv_timer_t* timer) {
+  UvTaskRunner* self = static_cast<UvTaskRunner*>(timer->data);
+  if (!ContainsKey(self->tasks_, timer))
+    return;
+
+  self->tasks_[timer].Run();
+  self->tasks_.erase(timer);
+  uv_timer_stop(timer);
+  uv_close(reinterpret_cast<uv_handle_t*>(timer), UvTaskRunner::OnClose);
+}
+
+// static
+void UvTaskRunner::OnClose(uv_handle_t* handle) {
+  delete reinterpret_cast<uv_timer_t*>(handle);
+}
+
+}  // namespace atom
--- a/atom/app/uv_task_runner.h
+++ b/atom/app/uv_task_runner.h
@@ -0,0 +1,45 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_UV_TASK_RUNNER_H_
+#define ATOM_APP_UV_TASK_RUNNER_H_
+
+#include <map>
+
+#include "base/callback.h"
+#include "base/single_thread_task_runner.h"
+#include "vendor/node/deps/uv/include/uv.h"
+
+namespace atom {
+
+// TaskRunner implementation that posts tasks into libuv's default loop.
+class UvTaskRunner : public base::SingleThreadTaskRunner {
+ public:
+  explicit UvTaskRunner(uv_loop_t* loop);
+  ~UvTaskRunner() override;
+
+  // base::SingleThreadTaskRunner:
+  bool PostDelayedTask(const tracked_objects::Location& from_here,
+                       const base::Closure& task,
+                       base::TimeDelta delay) override;
+  bool RunsTasksOnCurrentThread() const override;
+  bool PostNonNestableDelayedTask(
+      const tracked_objects::Location& from_here,
+      const base::Closure& task,
+      base::TimeDelta delay) override;
+
+ private:
+  static void OnTimeout(uv_timer_t* timer);
+  static void OnClose(uv_handle_t* handle);
+
+  uv_loop_t* loop_;
+
+  std::map<uv_timer_t*, base::Closure> tasks_;
+
+  DISALLOW_COPY_AND_ASSIGN(UvTaskRunner);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_APP_UV_TASK_RUNNER_H_
--- a/atom/browser/api/atom_api_app.cc
+++ b/atom/browser/api/atom_api_app.cc
@@ -8,27 +8,35 @@
 #include <vector>

 #include "atom/browser/api/atom_api_menu.h"
+#include "atom/browser/api/atom_api_session.h"
+#include "atom/browser/api/atom_api_web_contents.h"
 #include "atom/browser/atom_browser_context.h"
+#include "atom/browser/atom_browser_main_parts.h"
 #include "atom/browser/browser.h"
+#include "atom/browser/login_handler.h"
+#include "atom/common/native_mate_converters/callback.h"
+#include "atom/common/native_mate_converters/net_converter.h"
 #include "atom/common/native_mate_converters/file_path_converter.h"
 #include "atom/common/native_mate_converters/gurl_converter.h"
-#include "base/values.h"
+#include "atom/common/node_includes.h"
+#include "atom/common/options_switches.h"
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
-#include "native_mate/callback.h"
+#include "brightray/browser/brightray_paths.h"
+#include "chrome/common/chrome_paths.h"
+#include "content/public/browser/client_certificate_delegate.h"
+#include "content/public/browser/gpu_data_manager.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/common/content_switches.h"
 #include "native_mate/dictionary.h"
 #include "native_mate/object_template_builder.h"
-#include "net/base/load_flags.h"
-#include "net/proxy/proxy_service.h"
-#include "net/url_request/url_request_context.h"
-#include "net/url_request/url_request_context_getter.h"
+#include "net/ssl/ssl_cert_request_info.h"
+#include "ui/base/l10n/l10n_util.h"

-#include "atom/common/node_includes.h"
-
-#if defined(OS_LINUX)
-#include "base/nix/xdg_util.h"
+#if defined(OS_WIN)
+#include "base/strings/utf_string_conversions.h"
 #endif

 using atom::Browser;
@@ -38,7 +46,7 @@ namespace mate {
 #if defined(OS_WIN)
 template<>
 struct Converter<Browser::UserTask> {
-  static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val,
+  static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
                     Browser::UserTask* out) {
    mate::Dictionary dict;
    if (!ConvertFromV8(isolate, val, &dict))
@@ -65,50 +73,103 @@ namespace api {

 namespace {

-class ResolveProxyHelper {
- public:
-  ResolveProxyHelper(const GURL& url, App::ResolveProxyCallback callback)
-      : callback_(callback) {
-    net::ProxyService* proxy_service = AtomBrowserContext::Get()->
-        url_request_context_getter()->GetURLRequestContext()->proxy_service();
+// Return the path constant from string.
+int GetPathConstant(const std::string& name) {
+  if (name == "appData")
+    return brightray::DIR_APP_DATA;
+  else if (name == "userData")
+    return brightray::DIR_USER_DATA;
+  else if (name == "cache")
+    return brightray::DIR_CACHE;
+  else if (name == "userCache")
+    return brightray::DIR_USER_CACHE;
+  else if (name == "home")
+    return base::DIR_HOME;
+  else if (name == "temp")
+    return base::DIR_TEMP;
+  else if (name == "userDesktop" || name == "desktop")
+    return base::DIR_USER_DESKTOP;
+  else if (name == "exe")
+    return base::FILE_EXE;
+  else if (name == "module")
+    return base::FILE_MODULE;
+  else if (name == "documents")
+    return chrome::DIR_USER_DOCUMENTS;
+  else if (name == "downloads")
+    return chrome::DIR_DEFAULT_DOWNLOADS;
+  else if (name == "music")
+    return chrome::DIR_USER_MUSIC;
+  else if (name == "pictures")
+    return chrome::DIR_USER_PICTURES;
+  else if (name == "videos")
+    return chrome::DIR_USER_VIDEOS;
+  else
+    return -1;
+}

-    // Start the request.
-    int result = proxy_service->ResolveProxy(
-        url, net::LOAD_NORMAL, &proxy_info_,
-        base::Bind(&ResolveProxyHelper::OnResolveProxyCompleted,
-                   base::Unretained(this)),
-        &pac_req_, nullptr, net::BoundNetLog());
+bool NotificationCallbackWrapper(
+    const ProcessSingleton::NotificationCallback& callback,
+    const base::CommandLine::StringVector& cmd,
+    const base::FilePath& cwd) {
+  // Make sure the callback is called after app gets ready.
+  if (Browser::Get()->is_ready()) {
+    callback.Run(cmd, cwd);
+  } else {
+    scoped_refptr<base::SingleThreadTaskRunner> task_runner(
+        base::ThreadTaskRunnerHandle::Get());
+    task_runner->PostTask(
+        FROM_HERE, base::Bind(base::IgnoreResult(callback), cmd, cwd));
+  }
+  // ProcessSingleton needs to know whether current process is quiting.
+  return !Browser::Get()->is_shutting_down();
+}

-    // Completed synchronously.
-    if (result != net::ERR_IO_PENDING)
-      OnResolveProxyCompleted(result);
+void OnClientCertificateSelected(
+    v8::Isolate* isolate,
+    std::shared_ptr<content::ClientCertificateDelegate> delegate,
+    mate::Arguments* args) {
+  mate::Dictionary cert_data;
+  if (!(args->Length() == 1 && args->GetNext(&cert_data))) {
+    args->ThrowError();
+    return;
  }

-  void OnResolveProxyCompleted(int result) {
-    std::string proxy;
-    if (result == net::OK)
-      proxy = proxy_info_.ToPacString();
-    callback_.Run(proxy);
+  std::string encoded_data;
+  cert_data.Get("data", &encoded_data);

-    delete this;
-  }
+  auto certs =
+      net::X509Certificate::CreateCertificateListFromBytes(
+          encoded_data.data(), encoded_data.size(),
+          net::X509Certificate::FORMAT_AUTO);
+  delegate->ContinueWithCertificate(certs[0].get());
+}

- private:
-  App::ResolveProxyCallback callback_;
-  net::ProxyInfo proxy_info_;
-  net::ProxyService::PacRequest* pac_req_;
-
-  DISALLOW_COPY_AND_ASSIGN(ResolveProxyHelper);
-};
+void PassLoginInformation(scoped_refptr<LoginHandler> login_handler,
+                          mate::Arguments* args) {
+  base::string16 username, password;
+  if (args->GetNext(&username) && args->GetNext(&password))
+    login_handler->Login(username, password);
+  else
+    login_handler->CancelAuth();
+}

 }  // namespace

 App::App() {
+  static_cast<AtomBrowserClient*>(AtomBrowserClient::Get())->set_delegate(this);
  Browser::Get()->AddObserver(this);
+  content::GpuDataManager::GetInstance()->AddObserver(this);
 }

 App::~App() {
+  static_cast<AtomBrowserClient*>(AtomBrowserClient::Get())->set_delegate(
+      nullptr);
  Browser::Get()->RemoveObserver(this);
+  content::GpuDataManager::GetInstance()->RemoveObserver(this);
+}
+
+void App::OnBeforeQuit(bool* prevent_default) {
+  *prevent_default = Emit("before-quit");
 }

 void App::OnWillQuit(bool* prevent_default) {
@@ -121,22 +182,23 @@ void App::OnWindowAllClosed() {

 void App::OnQuit() {
  Emit("quit");
+
+  if (process_singleton_.get()) {
+    process_singleton_->Cleanup();
+    process_singleton_.reset();
+  }
 }

 void App::OnOpenFile(bool* prevent_default, const std::string& file_path) {
-  base::ListValue args;
-  args.AppendString(file_path);
-  *prevent_default = Emit("open-file", args);
+  *prevent_default = Emit("open-file", file_path);
 }

 void App::OnOpenURL(const std::string& url) {
-  base::ListValue args;
-  args.AppendString(url);
-  Emit("open-url", args);
+  Emit("open-url", url);
 }

-void App::OnActivateWithNoOpenWindows() {
-  Emit("activate-with-no-open-windows");
+void App::OnActivate(bool has_visible_windows) {
+  Emit("activate", has_visible_windows);
 }

 void App::OnWillFinishLaunching() {
@@ -147,23 +209,95 @@ void App::OnFinishLaunching() {
  Emit("ready");
 }

-base::FilePath App::GetDataPath() {
-  base::FilePath path;
-#if defined(OS_LINUX)
-  scoped_ptr<base::Environment> env(base::Environment::Create());
-  path = base::nix::GetXDGDirectory(env.get(),
-                                    base::nix::kXdgConfigHomeEnvVar,
-                                    base::nix::kDotConfigDir);
-#else
-  PathService::Get(base::DIR_APP_DATA, &path);
-#endif
+void App::OnLogin(LoginHandler* login_handler) {
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+  bool prevent_default = Emit(
+      "login",
+      WebContents::CreateFrom(isolate(), login_handler->GetWebContents()),
+      login_handler->request(),
+      login_handler->auth_info(),
+      base::Bind(&PassLoginInformation, make_scoped_refptr(login_handler)));

-  return path.Append(base::FilePath::FromUTF8Unsafe(
-      Browser::Get()->GetName()));
+  // Default behavior is to always cancel the auth.
+  if (!prevent_default)
+    login_handler->CancelAuth();
 }

-void App::ResolveProxy(const GURL& url, ResolveProxyCallback callback) {
-  new ResolveProxyHelper(url, callback);
+void App::AllowCertificateError(
+    int pid,
+    int fid,
+    int cert_error,
+    const net::SSLInfo& ssl_info,
+    const GURL& request_url,
+    content::ResourceType resource_type,
+    bool overridable,
+    bool strict_enforcement,
+    bool expired_previous_decision,
+    const base::Callback<void(bool)>& callback,
+    content::CertificateRequestResultType* request) {
+  auto rfh = content::RenderFrameHost::FromID(pid, fid);
+  auto web_contents = content::WebContents::FromRenderFrameHost(rfh);
+
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+  bool prevent_default = Emit("certificate-error",
+                              WebContents::CreateFrom(isolate(), web_contents),
+                              request_url,
+                              net::ErrorToString(cert_error),
+                              ssl_info.cert,
+                              callback);
+
+  // Deny the certificate by default.
+  if (!prevent_default)
+    *request = content::CERTIFICATE_REQUEST_RESULT_TYPE_DENY;
+}
+
+void App::SelectClientCertificate(
+    content::WebContents* web_contents,
+    net::SSLCertRequestInfo* cert_request_info,
+    scoped_ptr<content::ClientCertificateDelegate> delegate) {
+  std::shared_ptr<content::ClientCertificateDelegate>
+      shared_delegate(delegate.release());
+  bool prevent_default =
+      Emit("select-client-certificate",
+           WebContents::CreateFrom(isolate(), web_contents),
+           cert_request_info->host_and_port.ToString(),
+           cert_request_info->client_certs,
+           base::Bind(&OnClientCertificateSelected,
+                      isolate(),
+                      shared_delegate));
+
+  // Default to first certificate from the platform store.
+  if (!prevent_default)
+    shared_delegate->ContinueWithCertificate(
+        cert_request_info->client_certs[0].get());
+}
+
+void App::OnGpuProcessCrashed(base::TerminationStatus exit_code) {
+  Emit("gpu-process-crashed");
+}
+
+base::FilePath App::GetPath(mate::Arguments* args, const std::string& name) {
+  bool succeed = false;
+  base::FilePath path;
+  int key = GetPathConstant(name);
+  if (key >= 0)
+    succeed = PathService::Get(key, &path);
+  if (!succeed)
+    args->ThrowError("Failed to get path");
+  return path;
+}
+
+void App::SetPath(mate::Arguments* args,
+                  const std::string& name,
+                  const base::FilePath& path) {
+  bool succeed = false;
+  int key = GetPathConstant(name);
+  if (key >= 0)
+    succeed = PathService::Override(key, path);
+  if (!succeed)
+    args->ThrowError("Failed to set path");
 }

 void App::SetDesktopName(const std::string& desktop_name) {
@@ -173,11 +307,44 @@ void App::SetDesktopName(const std::string& desktop_name) {
 #endif
 }

+void App::AllowNTLMCredentialsForAllDomains(bool should_allow) {
+  auto browser_context = static_cast<AtomBrowserContext*>(
+        AtomBrowserMainParts::Get()->browser_context());
+  browser_context->AllowNTLMCredentialsForAllDomains(should_allow);
+}
+
+std::string App::GetLocale() {
+  return l10n_util::GetApplicationLocale("");
+}
+
+bool App::MakeSingleInstance(
+    const ProcessSingleton::NotificationCallback& callback) {
+  if (process_singleton_.get())
+    return false;
+
+  base::FilePath user_dir;
+  PathService::Get(brightray::DIR_USER_DATA, &user_dir);
+  process_singleton_.reset(new ProcessSingleton(
+      user_dir, base::Bind(NotificationCallbackWrapper, callback)));
+
+  switch (process_singleton_->NotifyOtherProcessOrCreate()) {
+    case ProcessSingleton::NotifyResult::LOCK_ERROR:
+    case ProcessSingleton::NotifyResult::PROFILE_IN_USE:
+    case ProcessSingleton::NotifyResult::PROCESS_NOTIFIED:
+      process_singleton_.reset();
+      return true;
+    case ProcessSingleton::NotifyResult::PROCESS_NONE:
+    default:  // Shouldn't be needed, but VS warns if it is not there.
+      return false;
+  }
+}
+
 mate::ObjectTemplateBuilder App::GetObjectTemplateBuilder(
    v8::Isolate* isolate) {
  auto browser = base::Unretained(Browser::Get());
  return mate::ObjectTemplateBuilder(isolate)
      .SetMethod("quit", base::Bind(&Browser::Quit, browser))
+      .SetMethod("exit", base::Bind(&Browser::Exit, browser))
      .SetMethod("focus", base::Bind(&Browser::Focus, browser))
      .SetMethod("getVersion", base::Bind(&Browser::GetVersion, browser))
      .SetMethod("setVersion", base::Bind(&Browser::SetVersion, browser))
@@ -188,13 +355,19 @@ mate::ObjectTemplateBuilder App::GetObjectTemplateBuilder(
                 base::Bind(&Browser::AddRecentDocument, browser))
      .SetMethod("clearRecentDocuments",
                 base::Bind(&Browser::ClearRecentDocuments, browser))
+      .SetMethod("setAppUserModelId",
+                 base::Bind(&Browser::SetAppUserModelID, browser))
 #if defined(OS_WIN)
      .SetMethod("setUserTasks",
                 base::Bind(&Browser::SetUserTasks, browser))
 #endif
-      .SetMethod("getDataPath", &App::GetDataPath)
-      .SetMethod("resolveProxy", &App::ResolveProxy)
-      .SetMethod("setDesktopName", &App::SetDesktopName);
+      .SetMethod("setPath", &App::SetPath)
+      .SetMethod("getPath", &App::GetPath)
+      .SetMethod("setDesktopName", &App::SetDesktopName)
+      .SetMethod("allowNTLMCredentialsForAllDomains",
+                 &App::AllowNTLMCredentialsForAllDomains)
+      .SetMethod("getLocale", &App::GetLocale)
+      .SetMethod("makeSingleInstance", &App::MakeSingleInstance);
 }

 // static
@@ -210,11 +383,22 @@ mate::Handle<App> App::Create(v8::Isolate* isolate) {
 namespace {

 void AppendSwitch(const std::string& switch_string, mate::Arguments* args) {
+  auto command_line = base::CommandLine::ForCurrentProcess();
+
+  if (switch_string == atom::switches::kPpapiFlashPath ||
+      switch_string == atom::switches::kClientCertificate ||
+      switch_string == switches::kLogNetLog) {
+    base::FilePath path;
+    args->GetNext(&path);
+    command_line->AppendSwitchPath(switch_string, path);
+    return;
+  }
+
  std::string value;
  if (args->GetNext(&value))
-    CommandLine::ForCurrentProcess()->AppendSwitchASCII(switch_string, value);
+    command_line->AppendSwitchASCII(switch_string, value);
  else
-    CommandLine::ForCurrentProcess()->AppendSwitch(switch_string);
+    command_line->AppendSwitch(switch_string);
 }

 #if defined(OS_MACOSX)
@@ -232,16 +416,16 @@ void DockSetMenu(atom::api::Menu* menu) {
 }
 #endif

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
  v8::Isolate* isolate = context->GetIsolate();
-  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  auto command_line = base::CommandLine::ForCurrentProcess();

  mate::Dictionary dict(isolate, exports);
  dict.Set("app", atom::api::App::Create(isolate));
  dict.SetMethod("appendSwitch", &AppendSwitch);
  dict.SetMethod("appendArgument",
-                 base::Bind(&CommandLine::AppendArg,
+                 base::Bind(&base::CommandLine::AppendArg,
                            base::Unretained(command_line)));
 #if defined(OS_MACOSX)
  auto browser = base::Unretained(Browser::Get());
--- a/atom/browser/api/atom_api_app.h
+++ b/atom/browser/api/atom_api_app.h
@@ -8,25 +8,30 @@
 #include <string>

 #include "atom/browser/api/event_emitter.h"
+#include "atom/browser/atom_browser_client.h"
 #include "atom/browser/browser_observer.h"
-#include "base/callback.h"
+#include "atom/common/native_mate_converters/callback.h"
+#include "chrome/browser/process_singleton.h"
+#include "content/public/browser/gpu_data_manager_observer.h"
 #include "native_mate/handle.h"

-class GURL;
-
 namespace base {
 class FilePath;
 }

+namespace mate {
+class Arguments;
+}
+
 namespace atom {

 namespace api {

-class App : public mate::EventEmitter,
-            public BrowserObserver {
+class App : public AtomBrowserClient::Delegate,
+            public mate::EventEmitter,
+            public BrowserObserver,
+            public content::GpuDataManagerObserver {
 public:
-  typedef base::Callback<void(std::string)> ResolveProxyCallback;
-
  static mate::Handle<App> Create(v8::Isolate* isolate);

 protected:
@@ -34,23 +39,56 @@ class App : public mate::EventEmitter,
  virtual ~App();

  // BrowserObserver:
+  void OnBeforeQuit(bool* prevent_default) override;
  void OnWillQuit(bool* prevent_default) override;
  void OnWindowAllClosed() override;
  void OnQuit() override;
  void OnOpenFile(bool* prevent_default, const std::string& file_path) override;
  void OnOpenURL(const std::string& url) override;
-  void OnActivateWithNoOpenWindows() override;
+  void OnActivate(bool has_visible_windows) override;
  void OnWillFinishLaunching() override;
  void OnFinishLaunching() override;
+  void OnLogin(LoginHandler* login_handler) override;
+
+  // content::ContentBrowserClient:
+  void AllowCertificateError(
+      int render_process_id,
+      int render_frame_id,
+      int cert_error,
+      const net::SSLInfo& ssl_info,
+      const GURL& request_url,
+      content::ResourceType resource_type,
+      bool overridable,
+      bool strict_enforcement,
+      bool expired_previous_decision,
+      const base::Callback<void(bool)>& callback,
+      content::CertificateRequestResultType* request) override;
+  void SelectClientCertificate(
+      content::WebContents* web_contents,
+      net::SSLCertRequestInfo* cert_request_info,
+      scoped_ptr<content::ClientCertificateDelegate> delegate) override;
+
+  // content::GpuDataManagerObserver:
+  void OnGpuProcessCrashed(base::TerminationStatus exit_code) override;

  // mate::Wrappable:
  mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
      v8::Isolate* isolate) override;

 private:
-  base::FilePath GetDataPath();
-  void ResolveProxy(const GURL& url, ResolveProxyCallback callback);
+  // Get/Set the pre-defined path in PathService.
+  base::FilePath GetPath(mate::Arguments* args, const std::string& name);
+  void SetPath(mate::Arguments* args,
+               const std::string& name,
+               const base::FilePath& path);
+
  void SetDesktopName(const std::string& desktop_name);
+  void AllowNTLMCredentialsForAllDomains(bool should_allow);
+  bool MakeSingleInstance(
+      const ProcessSingleton::NotificationCallback& callback);
+  std::string GetLocale();
+
+  scoped_ptr<ProcessSingleton> process_singleton_;

  DISALLOW_COPY_AND_ASSIGN(App);
 };
--- a/atom/browser/api/atom_api_auto_updater.cc
+++ b/atom/browser/api/atom_api_auto_updater.cc
@@ -5,13 +5,30 @@
 #include "atom/browser/api/atom_api_auto_updater.h"

 #include "base/time/time.h"
-#include "base/values.h"
-#include "atom/browser/auto_updater.h"
 #include "atom/browser/browser.h"
+#include "atom/browser/native_window.h"
+#include "atom/browser/window_list.h"
+#include "atom/common/native_mate_converters/callback.h"
+#include "atom/common/node_includes.h"
 #include "native_mate/dictionary.h"
 #include "native_mate/object_template_builder.h"

-#include "atom/common/node_includes.h"
+namespace mate {
+
+template<>
+struct Converter<base::Time> {
+  static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
+                                   const base::Time& val) {
+    v8::MaybeLocal<v8::Value> date = v8::Date::New(
+        isolate->GetCurrentContext(), val.ToJsTime());
+    if (date.IsEmpty())
+      return v8::Null(isolate);
+    else
+      return date.ToLocalChecked();
+  }
+};
+
+}  // namespace mate

 namespace atom {

@@ -22,13 +39,18 @@ AutoUpdater::AutoUpdater() {
 }

 AutoUpdater::~AutoUpdater() {
-  auto_updater::AutoUpdater::SetDelegate(NULL);
+  auto_updater::AutoUpdater::SetDelegate(nullptr);
 }

-void AutoUpdater::OnError(const std::string& error) {
-  base::ListValue args;
-  args.AppendString(error);
-  Emit("error", args);
+void AutoUpdater::OnError(const std::string& message) {
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+  auto error = v8::Exception::Error(mate::StringToV8(isolate(), message));
+  EmitCustomEvent(
+      "error",
+      error->ToObject(isolate()->GetCurrentContext()).ToLocalChecked(),
+      // Message is also emitted to keep compatibility with old code.
+      message);
 }

 void AutoUpdater::OnCheckingForUpdate() {
@@ -46,31 +68,36 @@ void AutoUpdater::OnUpdateNotAvailable() {
 void AutoUpdater::OnUpdateDownloaded(const std::string& release_notes,
                                     const std::string& release_name,
                                     const base::Time& release_date,
-                                     const std::string& update_url,
-                                     const base::Closure& quit_and_install) {
-  quit_and_install_ = quit_and_install;
+                                     const std::string& url) {
+  Emit("update-downloaded", release_notes, release_name, release_date, url,
+       // Keep compatibility with old APIs.
+       base::Bind(&AutoUpdater::QuitAndInstall, base::Unretained(this)));
+}

-  base::ListValue args;
-  args.AppendString(release_notes);
-  args.AppendString(release_name);
-  args.AppendDouble(release_date.ToJsTime());
-  args.AppendString(update_url);
-  Emit("update-downloaded-raw", args);
+void AutoUpdater::OnWindowAllClosed() {
+  QuitAndInstall();
 }

 mate::ObjectTemplateBuilder AutoUpdater::GetObjectTemplateBuilder(
    v8::Isolate* isolate) {
  return mate::ObjectTemplateBuilder(isolate)
-      .SetMethod("setFeedUrl", &auto_updater::AutoUpdater::SetFeedURL)
+      .SetMethod("setFeedURL", &auto_updater::AutoUpdater::SetFeedURL)
      .SetMethod("checkForUpdates", &auto_updater::AutoUpdater::CheckForUpdates)
-      .SetMethod("_quitAndInstall", &AutoUpdater::QuitAndInstall);
+      .SetMethod("quitAndInstall", &AutoUpdater::QuitAndInstall);
 }

 void AutoUpdater::QuitAndInstall() {
-  if (quit_and_install_.is_null())
-    Browser::Get()->Shutdown();
-  else
-    quit_and_install_.Run();
+  // If we don't have any window then quitAndInstall immediately.
+  WindowList* window_list = WindowList::GetInstance();
+  if (window_list->size() == 0) {
+    auto_updater::AutoUpdater::QuitAndInstall();
+    return;
+  }
+
+  // Otherwise do the restart after all windows have been closed.
+  window_list->AddObserver(this);
+  for (NativeWindow* window : *window_list)
+    window->Close();
 }

 // static
@@ -85,8 +112,8 @@ mate::Handle<AutoUpdater> AutoUpdater::Create(v8::Isolate* isolate) {

 namespace {

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
  v8::Isolate* isolate = context->GetIsolate();
  mate::Dictionary dict(isolate, exports);
  dict.Set("autoUpdater", atom::api::AutoUpdater::Create(isolate));
--- a/atom/browser/api/atom_api_auto_updater.h
+++ b/atom/browser/api/atom_api_auto_updater.h
@@ -7,9 +7,9 @@

 #include <string>

-#include "base/callback.h"
 #include "atom/browser/api/event_emitter.h"
-#include "atom/browser/auto_updater_delegate.h"
+#include "atom/browser/auto_updater.h"
+#include "atom/browser/window_list_observer.h"
 #include "native_mate/handle.h"

 namespace atom {
@@ -17,7 +17,8 @@ namespace atom {
 namespace api {

 class AutoUpdater : public mate::EventEmitter,
-                    public auto_updater::AutoUpdaterDelegate {
+                    public auto_updater::Delegate,
+                    public WindowListObserver {
 public:
  static mate::Handle<AutoUpdater> Create(v8::Isolate* isolate);

@@ -25,27 +26,26 @@ class AutoUpdater : public mate::EventEmitter,
  AutoUpdater();
  virtual ~AutoUpdater();

-  // AutoUpdaterDelegate implementations.
-  virtual void OnError(const std::string& error) OVERRIDE;
-  virtual void OnCheckingForUpdate() OVERRIDE;
-  virtual void OnUpdateAvailable() OVERRIDE;
-  virtual void OnUpdateNotAvailable() OVERRIDE;
-  virtual void OnUpdateDownloaded(
-      const std::string& release_notes,
-      const std::string& release_name,
-      const base::Time& release_date,
-      const std::string& update_url,
-      const base::Closure& quit_and_install) OVERRIDE;
+  // Delegate implementations.
+  void OnError(const std::string& error) override;
+  void OnCheckingForUpdate() override;
+  void OnUpdateAvailable() override;
+  void OnUpdateNotAvailable() override;
+  void OnUpdateDownloaded(const std::string& release_notes,
+                          const std::string& release_name,
+                          const base::Time& release_date,
+                          const std::string& update_url) override;
+
+  // WindowListObserver:
+  void OnWindowAllClosed() override;

  // mate::Wrappable implementations:
-  virtual mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
-      v8::Isolate* isolate);
+  mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
+      v8::Isolate* isolate) override;

 private:
  void QuitAndInstall();

-  base::Closure quit_and_install_;
-
  DISALLOW_COPY_AND_ASSIGN(AutoUpdater);
 };

--- a/atom/browser/api/atom_api_content_tracing.cc
+++ b/atom/browser/api/atom_api_content_tracing.cc
@@ -5,54 +5,32 @@
 #include <set>
 #include <string>

+#include "atom/common/native_mate_converters/callback.h"
 #include "atom/common/native_mate_converters/file_path_converter.h"
-#include "base/bind.h"
-#include "content/public/browser/tracing_controller.h"
-#include "native_mate/callback.h"
-#include "native_mate/dictionary.h"
-
 #include "atom/common/node_includes.h"
+#include "base/bind.h"
+#include "base/files/file_util.h"
+#include "content/public/browser/tracing_controller.h"
+#include "native_mate/dictionary.h"

 using content::TracingController;

 namespace mate {

-template<typename T>
-struct Converter<std::set<T> > {
-  static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
-                                    const std::set<T>& val) {
-    v8::Handle<v8::Array> result = v8::Array::New(
-        isolate, static_cast<int>(val.size()));
-    typename std::set<T>::const_iterator it;
-    int i;
-    for (i = 0, it = val.begin(); it != val.end(); ++it, ++i)
-      result->Set(i, Converter<T>::ToV8(isolate, *it));
-    return result;
-  }
-};
-
 template<>
-struct Converter<base::debug::CategoryFilter> {
+struct Converter<base::trace_event::TraceConfig> {
  static bool FromV8(v8::Isolate* isolate,
-                     v8::Handle<v8::Value> val,
-                     base::debug::CategoryFilter* out) {
-    std::string filter;
-    if (!ConvertFromV8(isolate, val, &filter))
-      return false;
-    *out = base::debug::CategoryFilter(filter);
-    return true;
-  }
-};
-
-template<>
-struct Converter<base::debug::TraceOptions> {
-  static bool FromV8(v8::Isolate* isolate,
-                     v8::Handle<v8::Value> val,
-                     base::debug::TraceOptions* out) {
-    std::string options;
+                     v8::Local<v8::Value> val,
+                     base::trace_event::TraceConfig* out) {
+    Dictionary options;
    if (!ConvertFromV8(isolate, val, &options))
      return false;
-    return out->SetFromString(options);
+    std::string category_filter, trace_options;
+    if (!options.Get("categoryFilter", &category_filter) ||
+        !options.Get("traceOptions", &trace_options))
+      return false;
+    *out = base::trace_event::TraceConfig(category_filter, trace_options);
+    return true;
  }
 };

@@ -60,30 +38,51 @@ struct Converter<base::debug::TraceOptions> {

 namespace {

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
-  TracingController* controller = TracingController::GetInstance();
+using CompletionCallback = base::Callback<void(const base::FilePath&)>;
+
+scoped_refptr<TracingController::TraceDataSink> GetTraceDataSink(
+    const base::FilePath& path, const CompletionCallback& callback) {
+  base::FilePath result_file_path = path;
+  if (result_file_path.empty() && !base::CreateTemporaryFile(&result_file_path))
+    LOG(ERROR) << "Creating temporary file failed";
+
+  return TracingController::CreateFileSink(result_file_path,
+                                           base::Bind(callback,
+                                                      result_file_path));
+}
+
+void StopRecording(const base::FilePath& path,
+                   const CompletionCallback& callback) {
+  TracingController::GetInstance()->DisableRecording(
+      GetTraceDataSink(path, callback));
+}
+
+void CaptureMonitoringSnapshot(const base::FilePath& path,
+                               const CompletionCallback& callback) {
+  TracingController::GetInstance()->CaptureMonitoringSnapshot(
+      GetTraceDataSink(path, callback));
+}
+
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
+  auto controller = base::Unretained(TracingController::GetInstance());
  mate::Dictionary dict(context->GetIsolate(), exports);
  dict.SetMethod("getCategories", base::Bind(
-      &TracingController::GetCategories, base::Unretained(controller)));
+      &TracingController::GetCategories, controller));
  dict.SetMethod("startRecording", base::Bind(
-      &TracingController::EnableRecording, base::Unretained(controller)));
-  dict.SetMethod("stopRecording", base::Bind(
-      &TracingController::DisableRecording, base::Unretained(controller)));
+      &TracingController::EnableRecording, controller));
+  dict.SetMethod("stopRecording", &StopRecording);
  dict.SetMethod("startMonitoring", base::Bind(
-      &TracingController::EnableMonitoring, base::Unretained(controller)));
+      &TracingController::EnableMonitoring, controller));
  dict.SetMethod("stopMonitoring", base::Bind(
-      &TracingController::DisableMonitoring, base::Unretained(controller)));
-  dict.SetMethod("captureMonitoringSnapshot", base::Bind(
-      &TracingController::CaptureMonitoringSnapshot,
-      base::Unretained(controller)));
-  dict.SetMethod("getTraceBufferPercentFull", base::Bind(
-      &TracingController::GetTraceBufferPercentFull,
-      base::Unretained(controller)));
+      &TracingController::DisableMonitoring, controller));
+  dict.SetMethod("captureMonitoringSnapshot", &CaptureMonitoringSnapshot);
+  dict.SetMethod("getTraceBufferUsage", base::Bind(
+      &TracingController::GetTraceBufferUsage, controller));
  dict.SetMethod("setWatchEvent", base::Bind(
-      &TracingController::SetWatchEvent, base::Unretained(controller)));
+      &TracingController::SetWatchEvent, controller));
  dict.SetMethod("cancelWatchEvent", base::Bind(
-      &TracingController::CancelWatchEvent, base::Unretained(controller)));
+      &TracingController::CancelWatchEvent, controller));
 }

 }  // namespace
--- a/atom/browser/api/atom_api_cookies.cc
+++ b/atom/browser/api/atom_api_cookies.cc
@@ -0,0 +1,347 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/atom_api_cookies.h"
+
+#include "atom/common/native_mate_converters/callback.h"
+#include "atom/common/native_mate_converters/gurl_converter.h"
+#include "atom/common/native_mate_converters/value_converter.h"
+#include "base/bind.h"
+#include "base/time/time.h"
+#include "base/values.h"
+#include "content/public/browser/browser_context.h"
+#include "content/public/browser/browser_thread.h"
+#include "native_mate/dictionary.h"
+#include "native_mate/object_template_builder.h"
+#include "net/cookies/cookie_monster.h"
+#include "net/cookies/cookie_store.h"
+#include "net/cookies/cookie_util.h"
+#include "net/url_request/url_request_context.h"
+#include "net/url_request/url_request_context_getter.h"
+
+using atom::api::Cookies;
+using content::BrowserThread;
+
+namespace {
+
+bool GetCookieListFromStore(
+    net::CookieStore* cookie_store,
+    const std::string& url,
+    const net::CookieMonster::GetCookieListCallback& callback) {
+  DCHECK(cookie_store);
+  GURL gurl(url);
+  net::CookieMonster* monster = cookie_store->GetCookieMonster();
+  // Empty url will match all url cookies.
+  if (url.empty()) {
+    monster->GetAllCookiesAsync(callback);
+    return true;
+  }
+
+  if (!gurl.is_valid())
+    return false;
+
+  monster->GetAllCookiesForURLAsync(gurl, callback);
+  return true;
+}
+
+void RunGetCookiesCallbackOnUIThread(v8::Isolate* isolate,
+                                     const std::string& error_message,
+                                     const net::CookieList& cookie_list,
+                                     const Cookies::CookiesCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  v8::Locker locker(isolate);
+  v8::HandleScope handle_scope(isolate);
+
+  if (!error_message.empty()) {
+    v8::Local<v8::Value> error = mate::ConvertToV8(isolate, error_message);
+    callback.Run(error, v8::Null(isolate));
+    return;
+  }
+  callback.Run(v8::Null(isolate), mate::ConvertToV8(isolate, cookie_list));
+}
+
+void RunRemoveCookiesCallbackOnUIThread(
+    v8::Isolate* isolate,
+    const std::string& error_message,
+    const Cookies::CookiesCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  v8::Locker locker(isolate);
+  v8::HandleScope handle_scope(isolate);
+
+  if (!error_message.empty()) {
+    v8::Local<v8::Value> error = mate::ConvertToV8(isolate, error_message);
+    callback.Run(error, v8::Null(isolate));
+    return;
+  }
+
+  callback.Run(v8::Null(isolate), v8::Null(isolate));
+}
+
+void RunSetCookiesCallbackOnUIThread(v8::Isolate* isolate,
+                                     const std::string& error_message,
+                                     bool set_success,
+                                     const Cookies::CookiesCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  v8::Locker locker(isolate);
+  v8::HandleScope handle_scope(isolate);
+
+  if (!error_message.empty()) {
+    v8::Local<v8::Value> error = mate::ConvertToV8(isolate, error_message);
+    callback.Run(error, v8::Null(isolate));
+    return;
+  }
+  if (!set_success) {
+    v8::Local<v8::Value> error = mate::ConvertToV8(
+        isolate, "Failed to set cookies");
+    callback.Run(error, v8::Null(isolate));
+  }
+
+  callback.Run(v8::Null(isolate), v8::Null(isolate));
+}
+
+bool MatchesDomain(const base::DictionaryValue* filter,
+                   const std::string& cookie_domain) {
+  std::string filter_domain;
+  if (!filter->GetString("domain", &filter_domain))
+    return true;
+
+  // Add a leading '.' character to the filter domain if it doesn't exist.
+  if (net::cookie_util::DomainIsHostOnly(filter_domain))
+    filter_domain.insert(0, ".");
+
+  std::string sub_domain(cookie_domain);
+  // Strip any leading '.' character from the input cookie domain.
+  if (!net::cookie_util::DomainIsHostOnly(sub_domain))
+    sub_domain = sub_domain.substr(1);
+
+  // Now check whether the domain argument is a subdomain of the filter domain.
+  for (sub_domain.insert(0, ".");
+       sub_domain.length() >= filter_domain.length();) {
+    if (sub_domain == filter_domain) {
+      return true;
+    }
+    const size_t next_dot = sub_domain.find('.', 1);  // Skip over leading dot.
+    sub_domain.erase(0, next_dot);
+  }
+  return false;
+}
+
+bool MatchesCookie(const base::DictionaryValue* filter,
+                   const net::CanonicalCookie& cookie) {
+  std::string name, domain, path;
+  bool is_secure, session;
+  if (filter->GetString("name", &name) && name != cookie.Name())
+    return false;
+  if (filter->GetString("path", &path) && path != cookie.Path())
+    return false;
+  if (!MatchesDomain(filter, cookie.Domain()))
+    return false;
+  if (filter->GetBoolean("secure", &is_secure) &&
+      is_secure != cookie.IsSecure())
+    return false;
+  if (filter->GetBoolean("session", &session) &&
+      session != cookie.IsPersistent())
+    return false;
+  return true;
+}
+
+}  // namespace
+
+namespace mate {
+
+template<>
+struct Converter<net::CanonicalCookie> {
+  static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
+                                   const net::CanonicalCookie& val) {
+    mate::Dictionary dict(isolate, v8::Object::New(isolate));
+    dict.Set("name", val.Name());
+    dict.Set("value", val.Value());
+    dict.Set("domain", val.Domain());
+    dict.Set("host_only", net::cookie_util::DomainIsHostOnly(val.Domain()));
+    dict.Set("path", val.Path());
+    dict.Set("secure", val.IsSecure());
+    dict.Set("http_only", val.IsHttpOnly());
+    dict.Set("session", val.IsPersistent());
+    if (!val.IsPersistent())
+      dict.Set("expirationDate", val.ExpiryDate().ToDoubleT());
+    return dict.GetHandle();
+  }
+};
+
+}  // namespace mate
+
+namespace atom {
+
+namespace api {
+
+Cookies::Cookies(content::BrowserContext* browser_context)
+    : request_context_getter_(browser_context->GetRequestContext()) {
+}
+
+Cookies::~Cookies() {
+}
+
+void Cookies::Get(const base::DictionaryValue& options,
+                  const CookiesCallback& callback) {
+  scoped_ptr<base::DictionaryValue> filter(
+      options.DeepCopyWithoutEmptyChildren());
+
+  content::BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      base::Bind(&Cookies::GetCookiesOnIOThread, base::Unretained(this),
+          Passed(&filter), callback));
+}
+
+void Cookies::GetCookiesOnIOThread(scoped_ptr<base::DictionaryValue> filter,
+                                   const CookiesCallback& callback) {
+  std::string url;
+  filter->GetString("url", &url);
+  if (!GetCookieListFromStore(GetCookieStore(), url,
+          base::Bind(&Cookies::OnGetCookies, base::Unretained(this),
+              Passed(&filter), callback))) {
+    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+        base::Bind(&RunGetCookiesCallbackOnUIThread, isolate(),
+                   "URL is not valid", net::CookieList(), callback));
+  }
+}
+
+void Cookies::OnGetCookies(scoped_ptr<base::DictionaryValue> filter,
+                           const CookiesCallback& callback,
+                           const net::CookieList& cookie_list) {
+  net::CookieList result;
+  for (const auto& cookie : cookie_list) {
+    if (MatchesCookie(filter.get(), cookie))
+      result.push_back(cookie);
+  }
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
+      &RunGetCookiesCallbackOnUIThread, isolate(), "", result, callback));
+}
+
+void Cookies::Remove(const mate::Dictionary& details,
+                     const CookiesCallback& callback) {
+  GURL url;
+  std::string name;
+  std::string error_message;
+  if (!details.Get("url", &url) || !details.Get("name", &name)) {
+    error_message = "Details(url, name) of removing cookie are required.";
+  }
+  if (error_message.empty() && !url.is_valid()) {
+    error_message = "URL is not valid.";
+  }
+  if (!error_message.empty()) {
+     RunRemoveCookiesCallbackOnUIThread(isolate(), error_message, callback);
+     return;
+  }
+  content::BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      base::Bind(&Cookies::RemoveCookiesOnIOThread, base::Unretained(this),
+          url, name, callback));
+}
+
+void Cookies::RemoveCookiesOnIOThread(const GURL& url, const std::string& name,
+                                      const CookiesCallback& callback) {
+  GetCookieStore()->DeleteCookieAsync(url, name,
+      base::Bind(&Cookies::OnRemoveCookies, base::Unretained(this), callback));
+}
+
+void Cookies::OnRemoveCookies(const CookiesCallback& callback) {
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+      base::Bind(&RunRemoveCookiesCallbackOnUIThread, isolate(), "", callback));
+}
+
+void Cookies::Set(const base::DictionaryValue& options,
+                  const CookiesCallback& callback) {
+  std::string url;
+  std::string error_message;
+  if (!options.GetString("url", &url)) {
+    error_message = "The url field is required.";
+  }
+
+  GURL gurl(url);
+  if (error_message.empty() && !gurl.is_valid()) {
+    error_message = "URL is not valid.";
+  }
+
+  if (!error_message.empty()) {
+    RunSetCookiesCallbackOnUIThread(isolate(), error_message, false, callback);
+    return;
+  }
+
+  scoped_ptr<base::DictionaryValue> details(
+      options.DeepCopyWithoutEmptyChildren());
+
+  content::BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      base::Bind(&Cookies::SetCookiesOnIOThread, base::Unretained(this),
+          Passed(&details), gurl, callback));
+}
+
+void Cookies::SetCookiesOnIOThread(scoped_ptr<base::DictionaryValue> details,
+                                   const GURL& url,
+                                   const CookiesCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  std::string name, value, domain, path;
+  bool secure = false;
+  bool http_only = false;
+  double expiration_date;
+
+  details->GetString("name", &name);
+  details->GetString("value", &value);
+  details->GetString("domain", &domain);
+  details->GetString("path", &path);
+  details->GetBoolean("secure", &secure);
+  details->GetBoolean("http_only", &http_only);
+
+  base::Time expiration_time;
+  if (details->GetDouble("expirationDate", &expiration_date)) {
+    expiration_time = (expiration_date == 0) ?
+        base::Time::UnixEpoch() :
+        base::Time::FromDoubleT(expiration_date);
+  }
+
+  GetCookieStore()->GetCookieMonster()->SetCookieWithDetailsAsync(
+      url,
+      name,
+      value,
+      domain,
+      path,
+      expiration_time,
+      secure,
+      http_only,
+      false,
+      net::COOKIE_PRIORITY_DEFAULT,
+      base::Bind(&Cookies::OnSetCookies, base::Unretained(this), callback));
+}
+
+void Cookies::OnSetCookies(const CookiesCallback& callback,
+                           bool set_success) {
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+      base::Bind(&RunSetCookiesCallbackOnUIThread, isolate(), "", set_success,
+                 callback));
+}
+
+net::CookieStore* Cookies::GetCookieStore() {
+  return request_context_getter_->GetURLRequestContext()->cookie_store();
+}
+
+// static
+mate::Handle<Cookies> Cookies::Create(
+    v8::Isolate* isolate,
+    content::BrowserContext* browser_context) {
+  return mate::CreateHandle(isolate, new Cookies(browser_context));
+}
+
+// static
+void Cookies::BuildPrototype(v8::Isolate* isolate,
+                             v8::Local<v8::ObjectTemplate> prototype) {
+  mate::ObjectTemplateBuilder(isolate, prototype)
+      .SetMethod("get", &Cookies::Get)
+      .SetMethod("remove", &Cookies::Remove)
+      .SetMethod("set", &Cookies::Set);
+}
+
+}  // namespace api
+
+}  // namespace atom
--- a/atom/browser/api/atom_api_cookies.h
+++ b/atom/browser/api/atom_api_cookies.h
@@ -0,0 +1,90 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_ATOM_API_COOKIES_H_
+#define ATOM_BROWSER_API_ATOM_API_COOKIES_H_
+
+#include <string>
+
+#include "atom/browser/api/trackable_object.h"
+#include "base/callback.h"
+#include "native_mate/handle.h"
+#include "net/cookies/canonical_cookie.h"
+
+namespace base {
+class DictionaryValue;
+}
+
+namespace content {
+class BrowserContext;
+}
+
+namespace mate {
+class Dictionary;
+}
+
+namespace net {
+class CookieStore;
+class URLRequestContextGetter;
+}
+
+namespace atom {
+
+namespace api {
+
+class Cookies : public mate::TrackableObject<Cookies> {
+ public:
+  // node.js style callback function(error, result)
+  typedef base::Callback<void(v8::Local<v8::Value>, v8::Local<v8::Value>)>
+      CookiesCallback;
+
+  static mate::Handle<Cookies> Create(v8::Isolate* isolate,
+                                      content::BrowserContext* browser_context);
+
+  // mate::TrackableObject:
+  static void BuildPrototype(v8::Isolate* isolate,
+                             v8::Local<v8::ObjectTemplate> prototype);
+
+ protected:
+  explicit Cookies(content::BrowserContext* browser_context);
+  ~Cookies();
+
+  void Get(const base::DictionaryValue& options,
+           const CookiesCallback& callback);
+  void Remove(const mate::Dictionary& details,
+              const CookiesCallback& callback);
+  void Set(const base::DictionaryValue& details,
+           const CookiesCallback& callback);
+
+  void GetCookiesOnIOThread(scoped_ptr<base::DictionaryValue> filter,
+                            const CookiesCallback& callback);
+  void OnGetCookies(scoped_ptr<base::DictionaryValue> filter,
+                    const CookiesCallback& callback,
+                    const net::CookieList& cookie_list);
+
+  void RemoveCookiesOnIOThread(const GURL& url,
+                               const std::string& name,
+                               const CookiesCallback& callback);
+  void OnRemoveCookies(const CookiesCallback& callback);
+
+  void SetCookiesOnIOThread(scoped_ptr<base::DictionaryValue> details,
+                            const GURL& url,
+                            const CookiesCallback& callback);
+  void OnSetCookies(const CookiesCallback& callback,
+                    bool set_success);
+
+ private:
+  // Must be called on IO thread.
+  net::CookieStore* GetCookieStore();
+
+  net::URLRequestContextGetter* request_context_getter_;
+
+  DISALLOW_COPY_AND_ASSIGN(Cookies);
+};
+
+}  // namespace api
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_API_ATOM_API_COOKIES_H_
--- a/atom/browser/api/atom_api_dialog.cc
+++ b/atom/browser/api/atom_api_dialog.cc
@@ -10,8 +10,9 @@
 #include "atom/browser/native_window.h"
 #include "atom/browser/ui/file_dialog.h"
 #include "atom/browser/ui/message_box.h"
+#include "atom/common/native_mate_converters/callback.h"
 #include "atom/common/native_mate_converters/file_path_converter.h"
-#include "native_mate/callback.h"
+#include "atom/common/native_mate_converters/image_converter.h"
 #include "native_mate/dictionary.h"

 #include "atom/common/node_includes.h"
@@ -21,7 +22,7 @@ namespace mate {
 template<>
 struct Converter<file_dialog::Filter> {
  static bool FromV8(v8::Isolate* isolate,
-                     v8::Handle<v8::Value> val,
+                     v8::Local<v8::Value> val,
                     file_dialog::Filter* out) {
    mate::Dictionary dict;
    if (!ConvertFromV8(isolate, val, &dict))
@@ -40,21 +41,25 @@ namespace {

 void ShowMessageBox(int type,
                    const std::vector<std::string>& buttons,
+                    int cancel_id,
+                    int options,
                    const std::string& title,
                    const std::string& message,
                    const std::string& detail,
+                    const gfx::ImageSkia& icon,
                    atom::NativeWindow* window,
                    mate::Arguments* args) {
-  v8::Handle<v8::Value> peek = args->PeekNext();
+  v8::Local<v8::Value> peek = args->PeekNext();
  atom::MessageBoxCallback callback;
  if (mate::Converter<atom::MessageBoxCallback>::FromV8(args->isolate(),
                                                        peek,
                                                        &callback)) {
-    atom::ShowMessageBox(window, (atom::MessageBoxType)type, buttons, title,
-                         message, detail, callback);
+    atom::ShowMessageBox(window, (atom::MessageBoxType)type, buttons, cancel_id,
+                         options, title, message, detail, icon, callback);
  } else {
    int chosen = atom::ShowMessageBox(window, (atom::MessageBoxType)type,
-                                      buttons, title, message, detail);
+                                      buttons, cancel_id, options, title,
+                                      message, detail, icon);
    args->Return(chosen);
  }
 }
@@ -65,7 +70,7 @@ void ShowOpenDialog(const std::string& title,
                    int properties,
                    atom::NativeWindow* window,
                    mate::Arguments* args) {
-  v8::Handle<v8::Value> peek = args->PeekNext();
+  v8::Local<v8::Value> peek = args->PeekNext();
  file_dialog::OpenDialogCallback callback;
  if (mate::Converter<file_dialog::OpenDialogCallback>::FromV8(args->isolate(),
                                                               peek,
@@ -85,7 +90,7 @@ void ShowSaveDialog(const std::string& title,
                    const file_dialog::Filters& filters,
                    atom::NativeWindow* window,
                    mate::Arguments* args) {
-  v8::Handle<v8::Value> peek = args->PeekNext();
+  v8::Local<v8::Value> peek = args->PeekNext();
  file_dialog::SaveDialogCallback callback;
  if (mate::Converter<file_dialog::SaveDialogCallback>::FromV8(args->isolate(),
                                                               peek,
@@ -99,8 +104,8 @@ void ShowSaveDialog(const std::string& title,
  }
 }

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
  mate::Dictionary dict(context->GetIsolate(), exports);
  dict.SetMethod("showMessageBox", &ShowMessageBox);
  dict.SetMethod("showErrorBox", &atom::ShowErrorBox);
--- a/atom/browser/api/atom_api_download_item.cc
+++ b/atom/browser/api/atom_api_download_item.cc
@@ -0,0 +1,198 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/atom_api_download_item.h"
+
+#include <map>
+
+#include "atom/browser/atom_browser_main_parts.h"
+#include "atom/common/native_mate_converters/callback.h"
+#include "atom/common/native_mate_converters/file_path_converter.h"
+#include "atom/common/native_mate_converters/gurl_converter.h"
+#include "atom/common/node_includes.h"
+#include "base/memory/linked_ptr.h"
+#include "base/strings/utf_string_conversions.h"
+#include "native_mate/dictionary.h"
+#include "net/base/filename_util.h"
+
+namespace mate {
+
+template<>
+struct Converter<content::DownloadItem::DownloadState> {
+  static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
+                                   content::DownloadItem::DownloadState state) {
+    std::string download_state;
+    switch (state) {
+      case content::DownloadItem::COMPLETE:
+        download_state = "completed";
+        break;
+      case content::DownloadItem::CANCELLED:
+        download_state = "cancelled";
+        break;
+      case content::DownloadItem::INTERRUPTED:
+        download_state = "interrupted";
+        break;
+      default:
+        break;
+    }
+    return ConvertToV8(isolate, download_state);
+  }
+};
+
+}  // namespace mate
+
+namespace atom {
+
+namespace api {
+
+namespace {
+// The wrapDownloadItem funtion which is implemented in JavaScript
+using WrapDownloadItemCallback = base::Callback<void(v8::Local<v8::Value>)>;
+WrapDownloadItemCallback g_wrap_download_item;
+
+char kDownloadItemSavePathKey[] = "DownloadItemSavePathKey";
+
+std::map<uint32, linked_ptr<v8::Global<v8::Value>>> g_download_item_objects;
+}  // namespace
+
+DownloadItem::SavePathData::SavePathData(const base::FilePath& path) :
+  path_(path) {
+}
+
+const base::FilePath& DownloadItem::SavePathData::path() {
+  return path_;
+}
+
+DownloadItem::DownloadItem(content::DownloadItem* download_item) :
+    download_item_(download_item) {
+  download_item_->AddObserver(this);
+}
+
+DownloadItem::~DownloadItem() {
+  if (download_item_)
+    OnDownloadDestroyed(download_item_);
+}
+
+void DownloadItem::OnDownloadUpdated(content::DownloadItem* item) {
+  download_item_->IsDone() ? Emit("done", item->GetState()) : Emit("updated");
+}
+
+void DownloadItem::OnDownloadDestroyed(content::DownloadItem* download_item) {
+  download_item_->RemoveObserver(this);
+  auto iter = g_download_item_objects.find(download_item_->GetId());
+  if (iter != g_download_item_objects.end())
+    g_download_item_objects.erase(iter);
+  download_item_ = nullptr;
+}
+
+int64 DownloadItem::GetReceivedBytes() {
+  return download_item_->GetReceivedBytes();
+}
+
+int64 DownloadItem::GetTotalBytes() {
+  return download_item_->GetTotalBytes();
+}
+
+const GURL& DownloadItem::GetURL() {
+  return download_item_->GetURL();
+}
+
+std::string DownloadItem::GetMimeType() {
+  return download_item_->GetMimeType();
+}
+
+bool DownloadItem::HasUserGesture() {
+  return download_item_->HasUserGesture();
+}
+
+std::string DownloadItem::GetFilename() {
+  return base::UTF16ToUTF8(net::GenerateFileName(GetURL(),
+                           GetContentDisposition(),
+                           std::string(),
+                           download_item_->GetSuggestedFilename(),
+                           GetMimeType(),
+                           std::string()).LossyDisplayName());
+}
+
+std::string DownloadItem::GetContentDisposition() {
+  return download_item_->GetContentDisposition();
+}
+
+void DownloadItem::SetSavePath(const base::FilePath& path) {
+  download_item_->SetUserData(UserDataKey(), new SavePathData(path));
+}
+
+void DownloadItem::Pause() {
+  download_item_->Pause();
+}
+
+void DownloadItem::Resume() {
+  download_item_->Resume();
+}
+
+void DownloadItem::Cancel() {
+  download_item_->Cancel(true);
+}
+
+// static
+void DownloadItem::BuildPrototype(v8::Isolate* isolate,
+                                  v8::Local<v8::ObjectTemplate> prototype) {
+  mate::ObjectTemplateBuilder(isolate, prototype)
+      .MakeDestroyable()
+      .SetMethod("pause", &DownloadItem::Pause)
+      .SetMethod("resume", &DownloadItem::Resume)
+      .SetMethod("cancel", &DownloadItem::Cancel)
+      .SetMethod("getReceivedBytes", &DownloadItem::GetReceivedBytes)
+      .SetMethod("getTotalBytes", &DownloadItem::GetTotalBytes)
+      .SetMethod("getURL", &DownloadItem::GetURL)
+      .SetMethod("getMimeType", &DownloadItem::GetMimeType)
+      .SetMethod("hasUserGesture", &DownloadItem::HasUserGesture)
+      .SetMethod("getFilename", &DownloadItem::GetFilename)
+      .SetMethod("getContentDisposition", &DownloadItem::GetContentDisposition)
+      .SetMethod("setSavePath", &DownloadItem::SetSavePath);
+}
+
+// static
+mate::Handle<DownloadItem> DownloadItem::Create(
+    v8::Isolate* isolate, content::DownloadItem* item) {
+  auto handle = mate::CreateHandle(isolate, new DownloadItem(item));
+  g_wrap_download_item.Run(handle.ToV8());
+  g_download_item_objects[item->GetId()] = make_linked_ptr(
+      new v8::Global<v8::Value>(isolate, handle.ToV8()));
+  return handle;
+}
+
+// static
+void* DownloadItem::UserDataKey() {
+  return &kDownloadItemSavePathKey;
+}
+
+void ClearWrapDownloadItem() {
+  g_wrap_download_item.Reset();
+}
+
+void SetWrapDownloadItem(const WrapDownloadItemCallback& callback) {
+  g_wrap_download_item = callback;
+
+  // Cleanup the wrapper on exit.
+  atom::AtomBrowserMainParts::Get()->RegisterDestructionCallback(
+      base::Bind(ClearWrapDownloadItem));
+}
+
+}  // namespace api
+
+}  // namespace atom
+
+namespace {
+
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
+  v8::Isolate* isolate = context->GetIsolate();
+  mate::Dictionary dict(isolate, exports);
+  dict.SetMethod("_setWrapDownloadItem", &atom::api::SetWrapDownloadItem);
+}
+
+}  // namespace
+
+NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_browser_download_item, Initialize);
--- a/atom/browser/api/atom_api_download_item.h
+++ b/atom/browser/api/atom_api_download_item.h
@@ -0,0 +1,69 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_ATOM_API_DOWNLOAD_ITEM_H_
+#define ATOM_BROWSER_API_ATOM_API_DOWNLOAD_ITEM_H_
+
+#include <string>
+
+#include "atom/browser/api/trackable_object.h"
+#include "base/files/file_path.h"
+#include "content/public/browser/download_item.h"
+#include "native_mate/handle.h"
+#include "url/gurl.h"
+
+namespace atom {
+
+namespace api {
+
+class DownloadItem : public mate::TrackableObject<DownloadItem>,
+                     public content::DownloadItem::Observer {
+ public:
+  class SavePathData : public base::SupportsUserData::Data {
+   public:
+    explicit SavePathData(const base::FilePath& path);
+    const base::FilePath& path();
+   private:
+    base::FilePath path_;
+  };
+
+  static mate::Handle<DownloadItem> Create(v8::Isolate* isolate,
+                                           content::DownloadItem* item);
+  static void* UserDataKey();
+
+  // mate::TrackableObject:
+  static void BuildPrototype(v8::Isolate* isolate,
+                             v8::Local<v8::ObjectTemplate> prototype);
+
+ protected:
+  explicit DownloadItem(content::DownloadItem* download_item);
+  ~DownloadItem();
+
+  // Override content::DownloadItem::Observer methods
+  void OnDownloadUpdated(content::DownloadItem* download) override;
+  void OnDownloadDestroyed(content::DownloadItem* download) override;
+
+  void Pause();
+  void Resume();
+  void Cancel();
+  int64 GetReceivedBytes();
+  int64 GetTotalBytes();
+  std::string GetMimeType();
+  bool HasUserGesture();
+  std::string GetFilename();
+  std::string GetContentDisposition();
+  const GURL& GetURL();
+  void SetSavePath(const base::FilePath& path);
+
+ private:
+  content::DownloadItem* download_item_;
+
+  DISALLOW_COPY_AND_ASSIGN(DownloadItem);
+};
+
+}  // namespace api
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_API_ATOM_API_DOWNLOAD_ITEM_H_
--- a/atom/browser/api/atom_api_global_shortcut.cc
+++ b/atom/browser/api/atom_api_global_shortcut.cc
@@ -7,8 +7,8 @@
 #include <string>

 #include "atom/common/native_mate_converters/accelerator_converter.h"
+#include "atom/common/native_mate_converters/callback.h"
 #include "base/stl_util.h"
-#include "native_mate/callback.h"
 #include "native_mate/dictionary.h"

 #include "atom/common/node_includes.h"
@@ -86,8 +86,8 @@ mate::Handle<GlobalShortcut> GlobalShortcut::Create(v8::Isolate* isolate) {

 namespace {

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
  v8::Isolate* isolate = context->GetIsolate();
  mate::Dictionary dict(isolate, exports);
  dict.Set("globalShortcut", atom::api::GlobalShortcut::Create(isolate));
--- a/atom/browser/api/atom_api_global_shortcut.h
+++ b/atom/browser/api/atom_api_global_shortcut.h
@@ -8,9 +8,9 @@
 #include <map>
 #include <string>

+#include "atom/browser/api/trackable_object.h"
 #include "base/callback.h"
 #include "chrome/browser/extensions/global_shortcut_listener.h"
-#include "native_mate/wrappable.h"
 #include "native_mate/handle.h"
 #include "ui/base/accelerators/accelerator.h"

@@ -19,17 +19,17 @@ namespace atom {
 namespace api {

 class GlobalShortcut : public extensions::GlobalShortcutListener::Observer,
-                       public mate::Wrappable {
+                       public mate::TrackableObject<GlobalShortcut> {
 public:
  static mate::Handle<GlobalShortcut> Create(v8::Isolate* isolate);

 protected:
  GlobalShortcut();
-  virtual ~GlobalShortcut();
+  ~GlobalShortcut() override;

  // mate::Wrappable implementations:
-  virtual mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
-      v8::Isolate* isolate) OVERRIDE;
+  mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
+      v8::Isolate* isolate) override;

 private:
  typedef std::map<ui::Accelerator, base::Closure> AcceleratorCallbackMap;
@@ -41,7 +41,7 @@ class GlobalShortcut : public extensions::GlobalShortcutListener::Observer,
  void UnregisterAll();

  // GlobalShortcutListener::Observer implementation.
-  virtual void OnKeyPressed(const ui::Accelerator& accelerator) OVERRIDE;
+  void OnKeyPressed(const ui::Accelerator& accelerator) override;

  AcceleratorCallbackMap accelerator_callback_map_;

--- a/atom/browser/api/atom_api_menu.cc
+++ b/atom/browser/api/atom_api_menu.cc
@@ -6,6 +6,8 @@

 #include "atom/browser/native_window.h"
 #include "atom/common/native_mate_converters/accelerator_converter.h"
+#include "atom/common/native_mate_converters/callback.h"
+#include "atom/common/native_mate_converters/image_converter.h"
 #include "atom/common/native_mate_converters/string16_converter.h"
 #include "native_mate/constructor.h"
 #include "native_mate/dictionary.h"
@@ -17,143 +19,54 @@ namespace atom {

 namespace api {

-namespace {
-
-// Call method of delegate object.
-v8::Handle<v8::Value> CallDelegate(v8::Isolate* isolate,
-                                   v8::Handle<v8::Value> default_value,
-                                   v8::Handle<v8::Object> menu,
-                                   const char* method,
-                                   int command_id) {
-  v8::Handle<v8::Value> delegate = menu->Get(
-      MATE_STRING_NEW(isolate, "delegate"));
-  if (!delegate->IsObject())
-    return default_value;
-
-  v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(
-      delegate->ToObject()->Get(MATE_STRING_NEW(isolate, method)));
-  if (!function->IsFunction())
-    return default_value;
-
-  v8::Handle<v8::Value> argv = MATE_INTEGER_NEW(isolate, command_id);
-  return function->Call(isolate->GetCurrentContext()->Global(), 1, &argv);
-}
-
-}  // namespace
-
 Menu::Menu()
-    : model_(new ui::SimpleMenuModel(this)),
+    : model_(new AtomMenuModel(this)),
      parent_(NULL) {
 }

 Menu::~Menu() {
 }

+void Menu::AfterInit(v8::Isolate* isolate) {
+  mate::Dictionary wrappable(isolate, GetWrapper(isolate));
+  mate::Dictionary delegate;
+  if (!wrappable.Get("delegate", &delegate))
+    return;
+
+  delegate.Get("isCommandIdChecked", &is_checked_);
+  delegate.Get("isCommandIdEnabled", &is_enabled_);
+  delegate.Get("isCommandIdVisible", &is_visible_);
+  delegate.Get("getAcceleratorForCommandId", &get_accelerator_);
+  delegate.Get("executeCommand", &execute_command_);
+  delegate.Get("menuWillShow", &menu_will_show_);
+}
+
 bool Menu::IsCommandIdChecked(int command_id) const {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-  return CallDelegate(isolate,
-                      MATE_FALSE(isolate),
-                      const_cast<Menu*>(this)->GetWrapper(isolate),
-                      "isCommandIdChecked",
-                      command_id)->BooleanValue();
+  return is_checked_.Run(command_id);
 }

 bool Menu::IsCommandIdEnabled(int command_id) const {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-  return CallDelegate(isolate,
-                      MATE_TRUE(isolate),
-                      const_cast<Menu*>(this)->GetWrapper(isolate),
-                      "isCommandIdEnabled",
-                      command_id)->BooleanValue();
+  return is_enabled_.Run(command_id);
 }

 bool Menu::IsCommandIdVisible(int command_id) const {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-  return CallDelegate(isolate,
-                      MATE_TRUE(isolate),
-                      const_cast<Menu*>(this)->GetWrapper(isolate),
-                      "isCommandIdVisible",
-                      command_id)->BooleanValue();
+  return is_visible_.Run(command_id);
 }

 bool Menu::GetAcceleratorForCommandId(int command_id,
                                      ui::Accelerator* accelerator) {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-  v8::Handle<v8::Value> shortcut = CallDelegate(isolate,
-                                                MATE_UNDEFINED(isolate),
-                                                GetWrapper(isolate),
-                                                "getAcceleratorForCommandId",
-                                                command_id);
-  return mate::ConvertFromV8(isolate, shortcut, accelerator);
-}
-
-bool Menu::IsItemForCommandIdDynamic(int command_id) const {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-  return CallDelegate(isolate,
-                      MATE_FALSE(isolate),
-                      const_cast<Menu*>(this)->GetWrapper(isolate),
-                      "isItemForCommandIdDynamic",
-                      command_id)->BooleanValue();
-}
-
-base::string16 Menu::GetLabelForCommandId(int command_id) const {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-  v8::Handle<v8::Value> result = CallDelegate(
-      isolate,
-      MATE_FALSE(isolate),
-      const_cast<Menu*>(this)->GetWrapper(isolate),
-      "getLabelForCommandId",
-      command_id);
-  base::string16 label;
-  mate::ConvertFromV8(isolate, result, &label);
-  return label;
-}
-
-base::string16 Menu::GetSublabelForCommandId(int command_id) const {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-  v8::Handle<v8::Value> result = CallDelegate(
-      isolate,
-      MATE_FALSE(isolate),
-      const_cast<Menu*>(this)->GetWrapper(isolate),
-      "getSubLabelForCommandId",
-      command_id);
-  base::string16 label;
-  mate::ConvertFromV8(isolate, result, &label);
-  return label;
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+  v8::Local<v8::Value> val = get_accelerator_.Run(command_id);
+  return mate::ConvertFromV8(isolate(), val, accelerator);
 }

 void Menu::ExecuteCommand(int command_id, int event_flags) {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-  CallDelegate(isolate, MATE_FALSE(isolate), GetWrapper(isolate),
-               "executeCommand", command_id);
+  execute_command_.Run(command_id);
 }

 void Menu::MenuWillShow(ui::SimpleMenuModel* source) {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-  CallDelegate(isolate, MATE_FALSE(isolate), GetWrapper(isolate),
-               "menuWillShow", -1);
-}
-
-void Menu::AttachToWindow(Window* window) {
-  window->window()->SetMenu(model_.get());
+  menu_will_show_.Run();
 }

 void Menu::InsertItemAt(
@@ -186,10 +99,18 @@ void Menu::InsertSubMenuAt(int index,
  model_->InsertSubMenuAt(index, command_id, label, menu->model_.get());
 }

+void Menu::SetIcon(int index, const gfx::Image& image) {
+  model_->SetIcon(index, image);
+}
+
 void Menu::SetSublabel(int index, const base::string16& sublabel) {
  model_->SetSublabel(index, sublabel);
 }

+void Menu::SetRole(int index, const base::string16& role) {
+  model_->SetRole(index, role);
+}
+
 void Menu::Clear() {
  model_->Clear();
 }
@@ -228,14 +149,17 @@ bool Menu::IsVisibleAt(int index) const {

 // static
 void Menu::BuildPrototype(v8::Isolate* isolate,
-                          v8::Handle<v8::ObjectTemplate> prototype) {
+                          v8::Local<v8::ObjectTemplate> prototype) {
  mate::ObjectTemplateBuilder(isolate, prototype)
+      .MakeDestroyable()
      .SetMethod("insertItem", &Menu::InsertItemAt)
      .SetMethod("insertCheckItem", &Menu::InsertCheckItemAt)
      .SetMethod("insertRadioItem", &Menu::InsertRadioItemAt)
      .SetMethod("insertSeparator", &Menu::InsertSeparatorAt)
      .SetMethod("insertSubMenu", &Menu::InsertSubMenuAt)
+      .SetMethod("setIcon", &Menu::SetIcon)
      .SetMethod("setSublabel", &Menu::SetSublabel)
+      .SetMethod("setRole", &Menu::SetRole)
      .SetMethod("clear", &Menu::Clear)
      .SetMethod("getIndexOfCommandId", &Menu::GetIndexOfCommandId)
      .SetMethod("getItemCount", &Menu::GetItemCount)
@@ -245,8 +169,8 @@ void Menu::BuildPrototype(v8::Isolate* isolate,
      .SetMethod("isItemCheckedAt", &Menu::IsItemCheckedAt)
      .SetMethod("isEnabledAt", &Menu::IsEnabledAt)
      .SetMethod("isVisibleAt", &Menu::IsVisibleAt)
-      .SetMethod("attachToWindow", &Menu::AttachToWindow)
-      .SetMethod("_popup", &Menu::Popup);
+      .SetMethod("_popup", &Menu::Popup)
+      .SetMethod("_popupAt", &Menu::PopupAt);
 }

 }  // namespace api
@@ -256,14 +180,14 @@ void Menu::BuildPrototype(v8::Isolate* isolate,

 namespace {

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
  using atom::api::Menu;
  v8::Isolate* isolate = context->GetIsolate();
  v8::Local<v8::Function> constructor = mate::CreateConstructor<Menu>(
      isolate, "Menu", base::Bind(&Menu::Create));
  mate::Dictionary dict(isolate, exports);
-  dict.Set("Menu", static_cast<v8::Handle<v8::Value>>(constructor));
+  dict.Set("Menu", static_cast<v8::Local<v8::Value>>(constructor));
 #if defined(OS_MACOSX)
  dict.SetMethod("setApplicationMenu", &Menu::SetApplicationMenu);
  dict.SetMethod("sendActionToFirstResponder",
--- a/atom/browser/api/atom_api_menu.h
+++ b/atom/browser/api/atom_api_menu.h
@@ -8,23 +8,22 @@
 #include <string>

 #include "atom/browser/api/atom_api_window.h"
+#include "atom/browser/api/trackable_object.h"
+#include "atom/browser/ui/atom_menu_model.h"
+#include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
-#include "ui/base/models/simple_menu_model.h"
-#include "native_mate/wrappable.h"

 namespace atom {

 namespace api {

-class MenuMac;
-
-class Menu : public mate::Wrappable,
-             public ui::SimpleMenuModel::Delegate {
+class Menu : public mate::TrackableObject<Menu>,
+             public AtomMenuModel::Delegate {
 public:
  static mate::Wrappable* Create();

  static void BuildPrototype(v8::Isolate* isolate,
-                             v8::Handle<v8::ObjectTemplate> prototype);
+                             v8::Local<v8::ObjectTemplate> prototype);

 #if defined(OS_MACOSX)
  // Set the global menubar.
@@ -34,29 +33,28 @@ class Menu : public mate::Wrappable,
  static void SendActionToFirstResponder(const std::string& action);
 #endif

-  ui::SimpleMenuModel* model() const { return model_.get(); }
+  AtomMenuModel* model() const { return model_.get(); }

 protected:
  Menu();
-  virtual ~Menu();
+  ~Menu() override;

-  // ui::SimpleMenuModel::Delegate implementations:
+  // mate::Wrappable:
+  void AfterInit(v8::Isolate* isolate) override;
+
+  // ui::SimpleMenuModel::Delegate:
  bool IsCommandIdChecked(int command_id) const override;
  bool IsCommandIdEnabled(int command_id) const override;
  bool IsCommandIdVisible(int command_id) const override;
-  bool GetAcceleratorForCommandId(
-      int command_id,
-      ui::Accelerator* accelerator) override;
-  bool IsItemForCommandIdDynamic(int command_id) const override;
-  base::string16 GetLabelForCommandId(int command_id) const override;
-  base::string16 GetSublabelForCommandId(int command_id) const override;
+  bool GetAcceleratorForCommandId(int command_id,
+                                  ui::Accelerator* accelerator) override;
  void ExecuteCommand(int command_id, int event_flags) override;
  void MenuWillShow(ui::SimpleMenuModel* source) override;

-  virtual void AttachToWindow(Window* window);
  virtual void Popup(Window* window) = 0;
+  virtual void PopupAt(Window* window, int x, int y) = 0;

-  scoped_ptr<ui::SimpleMenuModel> model_;
+  scoped_ptr<AtomMenuModel> model_;
  Menu* parent_;

 private:
@@ -73,7 +71,9 @@ class Menu : public mate::Wrappable,
                       int command_id,
                       const base::string16& label,
                       Menu* menu);
+  void SetIcon(int index, const gfx::Image& image);
  void SetSublabel(int index, const base::string16& sublabel);
+  void SetRole(int index, const base::string16& role);
  void Clear();
  int GetIndexOfCommandId(int command_id);
  int GetItemCount() const;
@@ -84,6 +84,14 @@ class Menu : public mate::Wrappable,
  bool IsEnabledAt(int index) const;
  bool IsVisibleAt(int index) const;

+  // Stored delegate methods.
+  base::Callback<bool(int)> is_checked_;
+  base::Callback<bool(int)> is_enabled_;
+  base::Callback<bool(int)> is_visible_;
+  base::Callback<v8::Local<v8::Value>(int)> get_accelerator_;
+  base::Callback<void(int)> execute_command_;
+  base::Callback<void()> menu_will_show_;
+
  DISALLOW_COPY_AND_ASSIGN(Menu);
 };

@@ -91,4 +99,27 @@ class Menu : public mate::Wrappable,

 }  // namespace atom

+
+namespace mate {
+
+template<>
+struct Converter<atom::AtomMenuModel*> {
+  static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
+                     atom::AtomMenuModel** out) {
+    // null would be tranfered to NULL.
+    if (val->IsNull()) {
+      *out = nullptr;
+      return true;
+    }
+
+    atom::api::Menu* menu;
+    if (!Converter<atom::api::Menu*>::FromV8(isolate, val, &menu))
+      return false;
+    *out = menu->model();
+    return true;
+  }
+};
+
+}  // namespace mate
+
 #endif  // ATOM_BROWSER_API_ATOM_API_MENU_H_
--- a/atom/browser/api/atom_api_menu_mac.h
+++ b/atom/browser/api/atom_api_menu_mac.h
@@ -19,7 +19,8 @@ class MenuMac : public Menu {
 protected:
  MenuMac();

-  virtual void Popup(Window* window) OVERRIDE;
+  void Popup(Window* window) override;
+  void PopupAt(Window* window, int x, int y) override;

  base::scoped_nsobject<AtomMenuController> menu_controller_;

--- a/atom/browser/api/atom_api_menu_mac.mm
+++ b/atom/browser/api/atom_api_menu_mac.mm
@@ -19,13 +19,17 @@ MenuMac::MenuMac() {
 }

 void MenuMac::Popup(Window* window) {
+  NativeWindow* native_window = window->window();
+  if (!native_window)
+    return;
+  content::WebContents* web_contents = native_window->web_contents();
+  if (!web_contents)
+    return;
+
+  NSWindow* nswindow = native_window->GetNativeWindow();
  base::scoped_nsobject<AtomMenuController> menu_controller(
      [[AtomMenuController alloc] initWithModel:model_.get()]);

-  NativeWindow* native_window = window->window();
-  NSWindow* nswindow = native_window->GetNativeWindow();
-  content::WebContents* web_contents = native_window->GetWebContents();
-
  // Fake out a context menu event.
  NSEvent* currentEvent = [NSApp currentEvent];
  NSPoint position = [nswindow mouseLocationOutsideOfEventStream];
@@ -46,6 +50,25 @@ void MenuMac::Popup(Window* window) {
                   forView:web_contents->GetContentNativeView()];
 }

+void MenuMac::PopupAt(Window* window, int x, int y) {
+  NativeWindow* native_window = window->window();
+  if (!native_window)
+    return;
+  content::WebContents* web_contents = native_window->web_contents();
+  if (!web_contents)
+    return;
+
+  base::scoped_nsobject<AtomMenuController> menu_controller(
+      [[AtomMenuController alloc] initWithModel:model_.get()]);
+  NSMenu* menu = [menu_controller menu];
+  NSView* view = web_contents->GetContentNativeView();
+
+  // Show the menu.
+  [menu popUpMenuPositioningItem:[menu itemAtIndex:0]
+                      atLocation:NSMakePoint(x, [view frame].size.height - y)
+                          inView:view];
+}
+
 // static
 void Menu::SetApplicationMenu(Menu* base_menu) {
  MenuMac* menu = static_cast<MenuMac*>(base_menu);
--- a/atom/browser/api/atom_api_menu_views.cc
+++ b/atom/browser/api/atom_api_menu_views.cc
@@ -5,6 +5,7 @@
 #include "atom/browser/api/atom_api_menu_views.h"

 #include "atom/browser/native_window_views.h"
+#include "content/public/browser/render_widget_host_view.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/controls/menu/menu_runner.h"

@@ -16,14 +17,32 @@ MenuViews::MenuViews() {
 }

 void MenuViews::Popup(Window* window) {
-  gfx::Point cursor = gfx::Screen::GetNativeScreen()->GetCursorScreenPoint();
+  PopupAtPoint(window, gfx::Screen::GetNativeScreen()->GetCursorScreenPoint());
+}
+
+void MenuViews::PopupAt(Window* window, int x, int y) {
+  NativeWindow* native_window = static_cast<NativeWindow*>(window->window());
+  if (!native_window)
+    return;
+  content::WebContents* web_contents = native_window->web_contents();
+  if (!web_contents)
+    return;
+  content::RenderWidgetHostView* view = web_contents->GetRenderWidgetHostView();
+  if (!view)
+    return;
+
+  gfx::Point origin = view->GetViewBounds().origin();
+  PopupAtPoint(window, gfx::Point(origin.x() + x, origin.y() + y));
+}
+
+void MenuViews::PopupAtPoint(Window* window, const gfx::Point& point) {
  views::MenuRunner menu_runner(
      model(),
      views::MenuRunner::CONTEXT_MENU | views::MenuRunner::HAS_MNEMONICS);
  ignore_result(menu_runner.RunMenuAt(
      static_cast<NativeWindowViews*>(window->window())->widget(),
      NULL,
-      gfx::Rect(cursor, gfx::Size()),
+      gfx::Rect(point, gfx::Size()),
      views::MENU_ANCHOR_TOPLEFT,
      ui::MENU_SOURCE_MOUSE));
 }
--- a/atom/browser/api/atom_api_menu_views.h
+++ b/atom/browser/api/atom_api_menu_views.h
@@ -6,6 +6,7 @@
 #define ATOM_BROWSER_API_ATOM_API_MENU_VIEWS_H_

 #include "atom/browser/api/atom_api_menu.h"
+#include "ui/gfx/screen.h"

 namespace atom {

@@ -16,9 +17,12 @@ class MenuViews : public Menu {
  MenuViews();

 protected:
-  virtual void Popup(Window* window) OVERRIDE;
+  void Popup(Window* window) override;
+  void PopupAt(Window* window, int x, int y) override;

 private:
+  void PopupAtPoint(Window* window, const gfx::Point& point);
+
  DISALLOW_COPY_AND_ASSIGN(MenuViews);
 };

--- a/atom/browser/api/atom_api_power_monitor.cc
+++ b/atom/browser/api/atom_api_power_monitor.cc
@@ -4,12 +4,12 @@

 #include "atom/browser/api/atom_api_power_monitor.h"

+#include "atom/browser/browser.h"
+#include "atom/common/node_includes.h"
 #include "base/power_monitor/power_monitor.h"
 #include "base/power_monitor/power_monitor_device_source.h"
 #include "native_mate/dictionary.h"

-#include "atom/common/node_includes.h"
-
 namespace atom {

 namespace api {
@@ -38,8 +38,15 @@ void PowerMonitor::OnResume() {
 }

 // static
-mate::Handle<PowerMonitor> PowerMonitor::Create(v8::Isolate* isolate) {
-  return CreateHandle(isolate, new PowerMonitor);
+v8::Local<v8::Value> PowerMonitor::Create(v8::Isolate* isolate) {
+  if (!Browser::Get()->is_ready()) {
+    isolate->ThrowException(v8::Exception::Error(mate::StringToV8(
+        isolate,
+        "Cannot initialize \"power-monitor\" module before app is ready")));
+    return v8::Null(isolate);
+  }
+
+  return CreateHandle(isolate, new PowerMonitor).ToV8();
 }

 }  // namespace api
@@ -49,17 +56,16 @@ mate::Handle<PowerMonitor> PowerMonitor::Create(v8::Isolate* isolate) {

 namespace {

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
 #if defined(OS_MACOSX)
  base::PowerMonitorDeviceSource::AllocateSystemIOPorts();
 #endif

  using atom::api::PowerMonitor;
  v8::Isolate* isolate = context->GetIsolate();
-  mate::Handle<PowerMonitor> power_monitor = PowerMonitor::Create(isolate);
  mate::Dictionary dict(isolate, exports);
-  dict.Set("powerMonitor", power_monitor);
+  dict.Set("powerMonitor", PowerMonitor::Create(isolate));
 }

 }  // namespace
--- a/atom/browser/api/atom_api_power_monitor.h
+++ b/atom/browser/api/atom_api_power_monitor.h
@@ -5,7 +5,7 @@
 #ifndef ATOM_BROWSER_API_ATOM_API_POWER_MONITOR_H_
 #define ATOM_BROWSER_API_ATOM_API_POWER_MONITOR_H_

-#include "atom/browser/api/event_emitter.h"
+#include "atom/browser/api/trackable_object.h"
 #include "base/compiler_specific.h"
 #include "base/power_monitor/power_observer.h"
 #include "native_mate/handle.h"
@@ -14,19 +14,19 @@ namespace atom {

 namespace api {

-class PowerMonitor : public mate::EventEmitter,
+class PowerMonitor : public mate::TrackableObject<PowerMonitor>,
                     public base::PowerObserver {
 public:
-  static mate::Handle<PowerMonitor> Create(v8::Isolate* isolate);
+  static v8::Local<v8::Value> Create(v8::Isolate* isolate);

 protected:
  PowerMonitor();
-  virtual ~PowerMonitor();
+  ~PowerMonitor() override;

  // base::PowerObserver implementations:
-  virtual void OnPowerStateChange(bool on_battery_power) OVERRIDE;
-  virtual void OnSuspend() OVERRIDE;
-  virtual void OnResume() OVERRIDE;
+  void OnPowerStateChange(bool on_battery_power) override;
+  void OnSuspend() override;
+  void OnResume() override;

 private:
  DISALLOW_COPY_AND_ASSIGN(PowerMonitor);
--- a/atom/browser/api/atom_api_power_save_blocker.cc
+++ b/atom/browser/api/atom_api_power_save_blocker.cc
@@ -0,0 +1,128 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/atom_api_power_save_blocker.h"
+
+#include <string>
+
+#include "atom/common/node_includes.h"
+#include "content/public/browser/power_save_blocker.h"
+#include "native_mate/dictionary.h"
+
+namespace mate {
+
+template<>
+struct Converter<content::PowerSaveBlocker::PowerSaveBlockerType> {
+  static bool FromV8(v8::Isolate* isolate,
+                     v8::Local<v8::Value> val,
+                     content::PowerSaveBlocker::PowerSaveBlockerType* out) {
+    using content::PowerSaveBlocker;
+    std::string type;
+    if (!ConvertFromV8(isolate, val, &type))
+      return false;
+    if (type == "prevent-app-suspension")
+      *out = PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension;
+    else if (type == "prevent-display-sleep")
+      *out = PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep;
+    else
+      return false;
+    return true;
+  }
+};
+
+}  // namespace mate
+
+namespace atom {
+
+namespace api {
+
+PowerSaveBlocker::PowerSaveBlocker()
+    : current_blocker_type_(
+        content::PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension) {
+}
+
+PowerSaveBlocker::~PowerSaveBlocker() {
+}
+
+void PowerSaveBlocker::UpdatePowerSaveBlocker() {
+  if (power_save_blocker_types_.empty()) {
+    power_save_blocker_.reset();
+    return;
+  }
+
+  // |kPowerSaveBlockPreventAppSuspension| keeps system active, but allows
+  // screen to be turned off.
+  // |kPowerSaveBlockPreventDisplaySleep| keeps system and screen active, has a
+  // higher precedence level than |kPowerSaveBlockPreventAppSuspension|.
+  //
+  // Only the highest-precedence blocker type takes effect.
+  content::PowerSaveBlocker::PowerSaveBlockerType new_blocker_type =
+      content::PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension;
+  for (const auto& element : power_save_blocker_types_) {
+    if (element.second ==
+        content::PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep) {
+      new_blocker_type =
+          content::PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep;
+      break;
+    }
+  }
+
+  if (!power_save_blocker_ || new_blocker_type != current_blocker_type_) {
+    scoped_ptr<content::PowerSaveBlocker> new_blocker =
+        content::PowerSaveBlocker::Create(
+            new_blocker_type,
+            content::PowerSaveBlocker::kReasonOther,
+            ATOM_PRODUCT_NAME);
+    power_save_blocker_.swap(new_blocker);
+    current_blocker_type_ = new_blocker_type;
+  }
+}
+
+int PowerSaveBlocker::Start(
+    content::PowerSaveBlocker::PowerSaveBlockerType type) {
+  static int count = 0;
+  power_save_blocker_types_[count] = type;
+  UpdatePowerSaveBlocker();
+  return count++;
+}
+
+bool PowerSaveBlocker::Stop(int id) {
+  bool success = power_save_blocker_types_.erase(id) > 0;
+  UpdatePowerSaveBlocker();
+  return success;
+}
+
+bool PowerSaveBlocker::IsStarted(int id) {
+  return power_save_blocker_types_.find(id) != power_save_blocker_types_.end();
+}
+
+mate::ObjectTemplateBuilder PowerSaveBlocker::GetObjectTemplateBuilder(
+    v8::Isolate* isolate) {
+  return mate::ObjectTemplateBuilder(isolate)
+      .SetMethod("start", &PowerSaveBlocker::Start)
+      .SetMethod("stop", &PowerSaveBlocker::Stop)
+      .SetMethod("isStarted", &PowerSaveBlocker::IsStarted);
+}
+
+// static
+mate::Handle<PowerSaveBlocker> PowerSaveBlocker::Create(v8::Isolate* isolate) {
+  return CreateHandle(isolate, new PowerSaveBlocker);
+}
+
+}  // namespace api
+
+}  // namespace atom
+
+namespace {
+
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
+  v8::Isolate* isolate = context->GetIsolate();
+  mate::Dictionary dict(isolate, exports);
+  dict.Set("powerSaveBlocker", atom::api::PowerSaveBlocker::Create(isolate));
+}
+
+}  // namespace
+
+NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_browser_power_save_blocker, Initialize);
--- a/atom/browser/api/atom_api_power_save_blocker.h
+++ b/atom/browser/api/atom_api_power_save_blocker.h
@@ -0,0 +1,58 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_ATOM_API_POWER_SAVE_BLOCKER_H_
+#define ATOM_BROWSER_API_ATOM_API_POWER_SAVE_BLOCKER_H_
+
+#include <map>
+
+#include "atom/browser/api/trackable_object.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/public/browser/power_save_blocker.h"
+#include "native_mate/handle.h"
+
+namespace mate {
+class Dictionary;
+}
+
+namespace atom {
+
+namespace api {
+
+class PowerSaveBlocker : public mate::TrackableObject<PowerSaveBlocker> {
+ public:
+  static mate::Handle<PowerSaveBlocker> Create(v8::Isolate* isolate);
+
+ protected:
+  PowerSaveBlocker();
+  ~PowerSaveBlocker() override;
+
+  // mate::Wrappable implementations:
+  mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
+      v8::Isolate* isolate) override;
+
+ private:
+  void UpdatePowerSaveBlocker();
+  int Start(content::PowerSaveBlocker::PowerSaveBlockerType type);
+  bool Stop(int id);
+  bool IsStarted(int id);
+
+  scoped_ptr<content::PowerSaveBlocker> power_save_blocker_;
+
+  // Currnet blocker type used by |power_save_blocker_|
+  content::PowerSaveBlocker::PowerSaveBlockerType current_blocker_type_;
+
+  // Map from id to the corresponding blocker type for each request.
+  using PowerSaveBlockerTypeMap =
+      std::map<int, content::PowerSaveBlocker::PowerSaveBlockerType>;
+  PowerSaveBlockerTypeMap power_save_blocker_types_;
+
+  DISALLOW_COPY_AND_ASSIGN(PowerSaveBlocker);
+};
+
+}  // namespace api
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_API_ATOM_API_POWER_SAVE_BLOCKER_H_
--- a/atom/browser/api/atom_api_protocol.cc
+++ b/atom/browser/api/atom_api_protocol.cc
@@ -4,315 +4,146 @@

 #include "atom/browser/api/atom_api_protocol.h"

+#include "atom/browser/atom_browser_client.h"
 #include "atom/browser/atom_browser_context.h"
-#include "atom/browser/net/adapter_request_job.h"
-#include "atom/browser/net/atom_url_request_job_factory.h"
-#include "atom/common/native_mate_converters/file_path_converter.h"
-#include "content/public/browser/browser_thread.h"
-#include "native_mate/callback.h"
-#include "native_mate/dictionary.h"
-#include "net/url_request/url_request_context.h"
-
+#include "atom/browser/atom_browser_main_parts.h"
+#include "atom/browser/net/url_request_async_asar_job.h"
+#include "atom/browser/net/url_request_buffer_job.h"
+#include "atom/browser/net/url_request_fetch_job.h"
+#include "atom/browser/net/url_request_string_job.h"
+#include "atom/common/native_mate_converters/callback.h"
+#include "atom/common/native_mate_converters/net_converter.h"
 #include "atom/common/node_includes.h"
+#include "native_mate/dictionary.h"

 using content::BrowserThread;

-namespace mate {
-
-template<>
-struct Converter<const net::URLRequest*> {
-  static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
-                                    const net::URLRequest* val) {
-    return mate::ObjectTemplateBuilder(isolate)
-        .SetValue("method", val->method())
-        .SetValue("url", val->url().spec())
-        .SetValue("referrer", val->referrer())
-        .Build()->NewInstance();
-  }
-};
-
-}  // namespace mate
-
-
 namespace atom {

 namespace api {

-namespace {
-
-typedef net::URLRequestJobFactory::ProtocolHandler ProtocolHandler;
-
-class CustomProtocolRequestJob : public AdapterRequestJob {
- public:
-  CustomProtocolRequestJob(Protocol* registry,
-                           ProtocolHandler* protocol_handler,
-                           net::URLRequest* request,
-                           net::NetworkDelegate* network_delegate)
-      : AdapterRequestJob(protocol_handler, request, network_delegate),
-        registry_(registry) {
-  }
-
-  // AdapterRequestJob:
-  virtual void GetJobTypeInUI() OVERRIDE {
-    DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
-    v8::Locker locker(isolate);
-    v8::HandleScope handle_scope(isolate);
-
-    // Call the JS handler.
-    Protocol::JsProtocolHandler callback =
-        registry_->GetProtocolHandler(request()->url().scheme());
-    v8::Handle<v8::Value> result = callback.Run(request());
-
-    // Determine the type of the job we are going to create.
-    if (result->IsString()) {
-      std::string data = mate::V8ToString(result);
-      BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
-          base::Bind(&AdapterRequestJob::CreateStringJobAndStart,
-                     GetWeakPtr(), "text/plain", "UTF-8", data));
-      return;
-    } else if (result->IsObject()) {
-      v8::Handle<v8::Object> obj = result->ToObject();
-      mate::Dictionary dict(isolate, obj);
-      std::string name = mate::V8ToString(obj->GetConstructorName());
-      if (name == "RequestStringJob") {
-        std::string mime_type, charset, data;
-        dict.Get("mimeType", &mime_type);
-        dict.Get("charset", &charset);
-        dict.Get("data", &data);
-
-        BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
-            base::Bind(&AdapterRequestJob::CreateStringJobAndStart,
-                       GetWeakPtr(), mime_type, charset, data));
-        return;
-      } else if (name == "RequestFileJob") {
-        base::FilePath path;
-        dict.Get("path", &path);
-
-        BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
-            base::Bind(&AdapterRequestJob::CreateFileJobAndStart,
-                       GetWeakPtr(), path));
-        return;
-      }
-    }
-
-    // Try the default protocol handler if we have.
-    if (default_protocol_handler()) {
-      BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
-          base::Bind(&AdapterRequestJob::CreateJobFromProtocolHandlerAndStart,
-                     GetWeakPtr()));
-      return;
-    }
-
-    // Fallback to the not implemented error.
-    BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
-        base::Bind(&AdapterRequestJob::CreateErrorJobAndStart,
-                   GetWeakPtr(), net::ERR_NOT_IMPLEMENTED));
-  }
-
- private:
-  Protocol* registry_;  // Weak, the Protocol class is expected to live forever.
-};
-
-// Always return the same CustomProtocolRequestJob for all requests, because
-// the content API needs the ProtocolHandler to return a job immediately, and
-// getting the real job from the JS requires asynchronous calls, so we have
-// to create an adapter job first.
-// Users can also pass an extra ProtocolHandler as the fallback one when
-// registered handler doesn't want to deal with the request.
-class CustomProtocolHandler : public ProtocolHandler {
- public:
-  CustomProtocolHandler(api::Protocol* registry,
-                        ProtocolHandler* protocol_handler = NULL)
-      : registry_(registry), protocol_handler_(protocol_handler) {
-  }
-
-  virtual net::URLRequestJob* MaybeCreateJob(
-      net::URLRequest* request,
-      net::NetworkDelegate* network_delegate) const OVERRIDE {
-    return new CustomProtocolRequestJob(registry_, protocol_handler_.get(),
-                                        request, network_delegate);
-  }
-
-  ProtocolHandler* ReleaseDefaultProtocolHandler() {
-    return protocol_handler_.release();
-  }
-
-  ProtocolHandler* original_handler() { return protocol_handler_.get(); }
-
- private:
-  Protocol* registry_;  // Weak, the Protocol class is expected to live forever.
-  scoped_ptr<ProtocolHandler> protocol_handler_;
-
-  DISALLOW_COPY_AND_ASSIGN(CustomProtocolHandler);
-};
-
-}  // namespace
-
-Protocol::Protocol()
-    : job_factory_(AtomBrowserContext::Get()->job_factory()) {
+Protocol::Protocol(AtomBrowserContext* browser_context)
+    : request_context_getter_(browser_context->GetRequestContext()),
+      job_factory_(browser_context->job_factory()) {
  CHECK(job_factory_);
 }

-Protocol::JsProtocolHandler Protocol::GetProtocolHandler(
-    const std::string& scheme) {
-  return protocol_handlers_[scheme];
-}
-
 mate::ObjectTemplateBuilder Protocol::GetObjectTemplateBuilder(
    v8::Isolate* isolate) {
  return mate::ObjectTemplateBuilder(isolate)
-      .SetMethod("registerProtocol",
-                 base::Bind(&Protocol::RegisterProtocol,
-                            base::Unretained(this)))
-      .SetMethod("unregisterProtocol",
-                 base::Bind(&Protocol::UnregisterProtocol,
-                            base::Unretained(this)))
-      .SetMethod("isHandledProtocol",
-                 base::Bind(&Protocol::IsHandledProtocol,
-                            base::Unretained(this)))
-      .SetMethod("interceptProtocol",
-                 base::Bind(&Protocol::InterceptProtocol,
-                            base::Unretained(this)))
-      .SetMethod("uninterceptProtocol",
-                 base::Bind(&Protocol::UninterceptProtocol,
-                            base::Unretained(this)));
+      .SetMethod("registerStandardSchemes", &Protocol::RegisterStandardSchemes)
+      .SetMethod("registerStringProtocol",
+                 &Protocol::RegisterProtocol<URLRequestStringJob>)
+      .SetMethod("registerBufferProtocol",
+                 &Protocol::RegisterProtocol<URLRequestBufferJob>)
+      .SetMethod("registerFileProtocol",
+                 &Protocol::RegisterProtocol<URLRequestAsyncAsarJob>)
+      .SetMethod("registerHttpProtocol",
+                 &Protocol::RegisterProtocol<URLRequestFetchJob>)
+      .SetMethod("unregisterProtocol", &Protocol::UnregisterProtocol)
+      .SetMethod("isProtocolHandled", &Protocol::IsProtocolHandled)
+      .SetMethod("interceptStringProtocol",
+                 &Protocol::InterceptProtocol<URLRequestStringJob>)
+      .SetMethod("interceptBufferProtocol",
+                 &Protocol::InterceptProtocol<URLRequestBufferJob>)
+      .SetMethod("interceptFileProtocol",
+                 &Protocol::InterceptProtocol<URLRequestAsyncAsarJob>)
+      .SetMethod("interceptHttpProtocol",
+                 &Protocol::InterceptProtocol<URLRequestFetchJob>)
+      .SetMethod("uninterceptProtocol", &Protocol::UninterceptProtocol);
 }

-void Protocol::RegisterProtocol(const std::string& scheme,
-                                const JsProtocolHandler& callback) {
-  if (ContainsKey(protocol_handlers_, scheme) ||
-      job_factory_->IsHandledProtocol(scheme))
-    return node::ThrowError("The scheme is already registered");
-
-  protocol_handlers_[scheme] = callback;
-  BrowserThread::PostTask(BrowserThread::IO,
-                          FROM_HERE,
-                          base::Bind(&Protocol::RegisterProtocolInIO,
-                                     base::Unretained(this), scheme));
+void Protocol::RegisterStandardSchemes(
+    const std::vector<std::string>& schemes) {
+  atom::AtomBrowserClient::SetCustomSchemes(schemes);
 }

-void Protocol::UnregisterProtocol(const std::string& scheme) {
-  ProtocolHandlersMap::iterator it(protocol_handlers_.find(scheme));
-  if (it == protocol_handlers_.end())
-    return node::ThrowError("The scheme has not been registered");
-
-  protocol_handlers_.erase(it);
-  BrowserThread::PostTask(BrowserThread::IO,
-                          FROM_HERE,
-                          base::Bind(&Protocol::UnregisterProtocolInIO,
-                                     base::Unretained(this), scheme));
+void Protocol::UnregisterProtocol(
+    const std::string& scheme, mate::Arguments* args) {
+  CompletionCallback callback;
+  args->GetNext(&callback);
+  content::BrowserThread::PostTaskAndReplyWithResult(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(&Protocol::UnregisterProtocolInIO,
+                 base::Unretained(this), scheme),
+      base::Bind(&Protocol::OnIOCompleted,
+                 base::Unretained(this), callback));
 }

-bool Protocol::IsHandledProtocol(const std::string& scheme) {
+Protocol::ProtocolError Protocol::UnregisterProtocolInIO(
+    const std::string& scheme) {
+  if (!job_factory_->HasProtocolHandler(scheme))
+    return PROTOCOL_NOT_REGISTERED;
+  job_factory_->SetProtocolHandler(scheme, nullptr);
+  return PROTOCOL_OK;
+}
+
+void Protocol::IsProtocolHandled(const std::string& scheme,
+                                    const BooleanCallback& callback) {
+  content::BrowserThread::PostTaskAndReplyWithResult(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(&Protocol::IsProtocolHandledInIO,
+                 base::Unretained(this), scheme),
+      callback);
+}
+
+bool Protocol::IsProtocolHandledInIO(const std::string& scheme) {
  return job_factory_->IsHandledProtocol(scheme);
 }

-void Protocol::InterceptProtocol(const std::string& scheme,
-                                 const JsProtocolHandler& callback) {
-  if (!job_factory_->HasProtocolHandler(scheme))
-    return node::ThrowError("Scheme does not exist.");
-
-  if (ContainsKey(protocol_handlers_, scheme))
-    return node::ThrowError("Cannot intercept custom procotols");
-
-  protocol_handlers_[scheme] = callback;
-  BrowserThread::PostTask(BrowserThread::IO,
-                          FROM_HERE,
-                          base::Bind(&Protocol::InterceptProtocolInIO,
-                                     base::Unretained(this), scheme));
+void Protocol::UninterceptProtocol(
+    const std::string& scheme, mate::Arguments* args) {
+  CompletionCallback callback;
+  args->GetNext(&callback);
+  content::BrowserThread::PostTaskAndReplyWithResult(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(&Protocol::UninterceptProtocolInIO,
+                 base::Unretained(this), scheme),
+      base::Bind(&Protocol::OnIOCompleted,
+                 base::Unretained(this), callback));
 }

-void Protocol::UninterceptProtocol(const std::string& scheme) {
-  ProtocolHandlersMap::iterator it(protocol_handlers_.find(scheme));
-  if (it == protocol_handlers_.end())
-    return node::ThrowError("The scheme has not been registered");
-
-  protocol_handlers_.erase(it);
-  BrowserThread::PostTask(BrowserThread::IO,
-                          FROM_HERE,
-                          base::Bind(&Protocol::UninterceptProtocolInIO,
-                                     base::Unretained(this), scheme));
+Protocol::ProtocolError Protocol::UninterceptProtocolInIO(
+    const std::string& scheme) {
+  if (!original_protocols_.contains(scheme))
+    return PROTOCOL_NOT_INTERCEPTED;
+  job_factory_->ReplaceProtocol(scheme,
+                                original_protocols_.take_and_erase(scheme));
+  return PROTOCOL_OK;
 }

-void Protocol::RegisterProtocolInIO(const std::string& scheme) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  job_factory_->SetProtocolHandler(scheme, new CustomProtocolHandler(this));
-  BrowserThread::PostTask(BrowserThread::UI,
-                          FROM_HERE,
-                          base::Bind(&Protocol::EmitEventInUI,
-                                     base::Unretained(this),
-                                     "registered", scheme));
-}
-
-void Protocol::UnregisterProtocolInIO(const std::string& scheme) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  job_factory_->SetProtocolHandler(scheme, NULL);
-  BrowserThread::PostTask(BrowserThread::UI,
-                          FROM_HERE,
-                          base::Bind(&Protocol::EmitEventInUI,
-                                     base::Unretained(this),
-                                     "unregistered", scheme));
-}
-
-void Protocol::InterceptProtocolInIO(const std::string& scheme) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  ProtocolHandler* original_handler = job_factory_->GetProtocolHandler(scheme);
-  if (original_handler == NULL) {
-    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
-        &Protocol::EmitEventInUI,
-        base::Unretained(this),
-        "error", "There is no protocol handler to intercpet"));
+void Protocol::OnIOCompleted(
+    const CompletionCallback& callback, ProtocolError error) {
+  // The completion callback is optional.
+  if (callback.is_null())
    return;
-  }

-  job_factory_->ReplaceProtocol(
-      scheme, new CustomProtocolHandler(this, original_handler));
-  BrowserThread::PostTask(BrowserThread::UI,
-                          FROM_HERE,
-                          base::Bind(&Protocol::EmitEventInUI,
-                                     base::Unretained(this),
-                                     "intercepted", scheme));
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+
+  if (error == PROTOCOL_OK) {
+    callback.Run(v8::Null(isolate()));
+  } else {
+    std::string str = ErrorCodeToString(error);
+    callback.Run(v8::Exception::Error(mate::StringToV8(isolate(), str)));
+  }
 }

-void Protocol::UninterceptProtocolInIO(const std::string& scheme) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  CustomProtocolHandler* handler = static_cast<CustomProtocolHandler*>(
-      job_factory_->GetProtocolHandler(scheme));
-  if (handler->original_handler() == NULL) {
-    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
-        &Protocol::EmitEventInUI,
-        base::Unretained(this),
-        "error", "The protocol is not intercpeted"));
-    return;
+std::string Protocol::ErrorCodeToString(ProtocolError error) {
+  switch (error) {
+    case PROTOCOL_FAIL: return "Failed to manipulate protocol factory";
+    case PROTOCOL_REGISTERED: return "The scheme has been registred";
+    case PROTOCOL_NOT_REGISTERED: return "The scheme has not been registred";
+    case PROTOCOL_INTERCEPTED: return "The scheme has been intercepted";
+    case PROTOCOL_NOT_INTERCEPTED: return "The scheme has not been intercepted";
+    default: return "Unexpected error";
  }
-
-  // Reset the protocol handler to the orignal one and delete current protocol
-  // handler.
-  ProtocolHandler* original_handler = handler->ReleaseDefaultProtocolHandler();
-  delete job_factory_->ReplaceProtocol(scheme, original_handler);
-  BrowserThread::PostTask(BrowserThread::UI,
-                          FROM_HERE,
-                          base::Bind(&Protocol::EmitEventInUI,
-                                     base::Unretained(this),
-                                     "unintercepted", scheme));
-}
-
-void Protocol::EmitEventInUI(const std::string& event,
-                             const std::string& parameter) {
-  base::ListValue args;
-  args.AppendString(parameter);
-  Emit(event, args);
 }

 // static
-mate::Handle<Protocol> Protocol::Create(v8::Isolate* isolate) {
-  return CreateHandle(isolate, new Protocol);
+mate::Handle<Protocol> Protocol::Create(
+    v8::Isolate* isolate, AtomBrowserContext* browser_context) {
+  return mate::CreateHandle(isolate, new Protocol(browser_context));
 }

 }  // namespace api
@@ -321,11 +152,13 @@ mate::Handle<Protocol> Protocol::Create(v8::Isolate* isolate) {

 namespace {

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
  v8::Isolate* isolate = context->GetIsolate();
  mate::Dictionary dict(isolate, exports);
-  dict.Set("protocol", atom::api::Protocol::Create(isolate));
+  auto browser_context = static_cast<atom::AtomBrowserContext*>(
+      atom::AtomBrowserMainParts::Get()->browser_context());
+  dict.Set("protocol", atom::api::Protocol::Create(isolate, browser_context));
 }

 }  // namespace
--- a/atom/browser/api/atom_api_protocol.h
+++ b/atom/browser/api/atom_api_protocol.h
@@ -7,67 +7,180 @@

 #include <string>
 #include <map>
+#include <vector>

-#include "atom/browser/api/event_emitter.h"
+#include "atom/browser/net/atom_url_request_job_factory.h"
 #include "base/callback.h"
+#include "base/containers/scoped_ptr_hash_map.h"
+#include "content/public/browser/browser_thread.h"
+#include "native_mate/arguments.h"
+#include "native_mate/dictionary.h"
 #include "native_mate/handle.h"
+#include "native_mate/wrappable.h"

 namespace net {
 class URLRequest;
+class URLRequestContextGetter;
 }

 namespace atom {

+class AtomBrowserContext;
 class AtomURLRequestJobFactory;

 namespace api {

-class Protocol : public mate::EventEmitter {
+class Protocol : public mate::Wrappable {
 public:
-  typedef base::Callback<v8::Handle<v8::Value>(const net::URLRequest*)>
-          JsProtocolHandler;
+  using Handler =
+      base::Callback<void(const net::URLRequest*, v8::Local<v8::Value>)>;
+  using CompletionCallback = base::Callback<void(v8::Local<v8::Value>)>;
+  using BooleanCallback = base::Callback<void(bool)>;

-  static mate::Handle<Protocol> Create(v8::Isolate* isolate);
-
-  JsProtocolHandler GetProtocolHandler(const std::string& scheme);
+  static mate::Handle<Protocol> Create(
+      v8::Isolate* isolate, AtomBrowserContext* browser_context);

 protected:
-  Protocol();
+  explicit Protocol(AtomBrowserContext* browser_context);

  // mate::Wrappable implementations:
  virtual mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
      v8::Isolate* isolate);

 private:
-  typedef std::map<std::string, JsProtocolHandler> ProtocolHandlersMap;
+  // Possible errors.
+  enum ProtocolError {
+    PROTOCOL_OK,  // no error
+    PROTOCOL_FAIL,  // operation failed, should never occur
+    PROTOCOL_REGISTERED,
+    PROTOCOL_NOT_REGISTERED,
+    PROTOCOL_INTERCEPTED,
+    PROTOCOL_NOT_INTERCEPTED,
+  };

-  // Register/unregister an networking |scheme| which would be handled by
-  // |callback|.
+  // The protocol handler that will create a protocol handler for certain
+  // request job.
+  template<typename RequestJob>
+  class CustomProtocolHandler
+      : public net::URLRequestJobFactory::ProtocolHandler {
+   public:
+    CustomProtocolHandler(
+        v8::Isolate* isolate,
+        net::URLRequestContextGetter* request_context,
+        const Handler& handler)
+        : isolate_(isolate),
+          request_context_(request_context),
+          handler_(handler) {}
+    ~CustomProtocolHandler() override {}
+
+    net::URLRequestJob* MaybeCreateJob(
+        net::URLRequest* request,
+        net::NetworkDelegate* network_delegate) const override {
+      RequestJob* request_job = new RequestJob(request, network_delegate);
+      request_job->SetHandlerInfo(isolate_, request_context_, handler_);
+      return request_job;
+    }
+
+   private:
+    v8::Isolate* isolate_;
+    net::URLRequestContextGetter* request_context_;
+    Protocol::Handler handler_;
+
+    DISALLOW_COPY_AND_ASSIGN(CustomProtocolHandler);
+  };
+
+  // Register schemes to standard scheme list.
+  void RegisterStandardSchemes(const std::vector<std::string>& schemes);
+
+  // Register the protocol with certain request job.
+  template<typename RequestJob>
  void RegisterProtocol(const std::string& scheme,
-                        const JsProtocolHandler& callback);
-  void UnregisterProtocol(const std::string& scheme);
+                        const Handler& handler,
+                        mate::Arguments* args) {
+    CompletionCallback callback;
+    args->GetNext(&callback);
+    content::BrowserThread::PostTaskAndReplyWithResult(
+        content::BrowserThread::IO, FROM_HERE,
+        base::Bind(&Protocol::RegisterProtocolInIO<RequestJob>,
+                   base::Unretained(this), scheme, handler),
+        base::Bind(&Protocol::OnIOCompleted,
+                   base::Unretained(this), callback));
+  }
+  template<typename RequestJob>
+  ProtocolError RegisterProtocolInIO(const std::string& scheme,
+                                     const Handler& handler) {
+    if (job_factory_->IsHandledProtocol(scheme))
+      return PROTOCOL_REGISTERED;
+    scoped_ptr<CustomProtocolHandler<RequestJob>> protocol_handler(
+        new CustomProtocolHandler<RequestJob>(
+            isolate(), request_context_getter_, handler));
+    if (job_factory_->SetProtocolHandler(scheme, protocol_handler.Pass()))
+      return PROTOCOL_OK;
+    else
+      return PROTOCOL_FAIL;
+  }

-  // Returns whether a scheme has been registered.
-  // FIXME Should accept a callback and be asynchronous so we do not have to use
-  // locks.
-  bool IsHandledProtocol(const std::string& scheme);
+  // Unregister the protocol handler that handles |scheme|.
+  void UnregisterProtocol(const std::string& scheme, mate::Arguments* args);
+  ProtocolError UnregisterProtocolInIO(const std::string& scheme);

-  // Intercept/unintercept an existing protocol handler.
+  // Whether the protocol has handler registered.
+  void IsProtocolHandled(const std::string& scheme,
+                         const BooleanCallback& callback);
+  bool IsProtocolHandledInIO(const std::string& scheme);
+
+  // Replace the protocol handler with a new one.
+  template<typename RequestJob>
  void InterceptProtocol(const std::string& scheme,
-                         const JsProtocolHandler& callback);
-  void UninterceptProtocol(const std::string& scheme);
+                         const Handler& handler,
+                         mate::Arguments* args) {
+    CompletionCallback callback;
+    args->GetNext(&callback);
+    content::BrowserThread::PostTaskAndReplyWithResult(
+        content::BrowserThread::IO, FROM_HERE,
+        base::Bind(&Protocol::InterceptProtocolInIO<RequestJob>,
+                   base::Unretained(this), scheme, handler),
+        base::Bind(&Protocol::OnIOCompleted,
+                   base::Unretained(this), callback));
+  }
+  template<typename RequestJob>
+  ProtocolError InterceptProtocolInIO(const std::string& scheme,
+                                      const Handler& handler) {
+    if (!job_factory_->IsHandledProtocol(scheme))
+      return PROTOCOL_NOT_REGISTERED;
+    // It is possible a protocol is handled but can not be intercepted.
+    if (!job_factory_->HasProtocolHandler(scheme))
+      return PROTOCOL_FAIL;
+    if (ContainsKey(original_protocols_, scheme))
+      return PROTOCOL_INTERCEPTED;
+    scoped_ptr<CustomProtocolHandler<RequestJob>> protocol_handler(
+        new CustomProtocolHandler<RequestJob>(
+            isolate(), request_context_getter_, handler));
+    original_protocols_.set(
+        scheme,
+        job_factory_->ReplaceProtocol(scheme, protocol_handler.Pass()));
+    return PROTOCOL_OK;
+  }

-  // The networking related operations have to be done in IO thread.
-  void RegisterProtocolInIO(const std::string& scheme);
-  void UnregisterProtocolInIO(const std::string& scheme);
-  void InterceptProtocolInIO(const std::string& scheme);
-  void UninterceptProtocolInIO(const std::string& scheme);
+  // Restore the |scheme| to its original protocol handler.
+  void UninterceptProtocol(const std::string& scheme, mate::Arguments* args);
+  ProtocolError UninterceptProtocolInIO(const std::string& scheme);

-  // Do protocol.emit(event, parameter) under UI thread.
-  void EmitEventInUI(const std::string& event, const std::string& parameter);
+  // Convert error code to JS exception and call the callback.
+  void OnIOCompleted(const CompletionCallback& callback, ProtocolError error);

-  AtomURLRequestJobFactory* job_factory_;
-  ProtocolHandlersMap protocol_handlers_;
+  // Convert error code to string.
+  std::string ErrorCodeToString(ProtocolError error);
+
+  net::URLRequestContextGetter* request_context_getter_;
+
+  // Map that stores the original protocols of schemes.
+  using OriginalProtocolsMap = base::ScopedPtrHashMap<
+      std::string,
+      scoped_ptr<net::URLRequestJobFactory::ProtocolHandler>>;
+  OriginalProtocolsMap original_protocols_;
+
+  AtomURLRequestJobFactory* job_factory_;  // weak ref

  DISALLOW_COPY_AND_ASSIGN(Protocol);
 };
--- a/atom/browser/api/atom_api_screen.cc
+++ b/atom/browser/api/atom_api_screen.cc
@@ -0,0 +1,146 @@
+// Copyright (c) 2013 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/atom_api_screen.h"
+
+#include <algorithm>
+#include <string>
+
+#include "atom/browser/browser.h"
+#include "atom/common/native_mate_converters/gfx_converter.h"
+#include "base/bind.h"
+#include "native_mate/dictionary.h"
+#include "native_mate/object_template_builder.h"
+#include "ui/gfx/screen.h"
+
+#include "atom/common/node_includes.h"
+
+namespace atom {
+
+namespace api {
+
+namespace {
+
+// Find an item in container according to its ID.
+template<class T>
+typename T::iterator FindById(T* container, int id) {
+  auto predicate = [id] (const typename T::value_type& item) -> bool {
+    return item.id() == id;
+  };
+  return std::find_if(container->begin(), container->end(), predicate);
+}
+
+// Convert the changed_metrics bitmask to string array.
+std::vector<std::string> MetricsToArray(uint32_t metrics) {
+  std::vector<std::string> array;
+  if (metrics & gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS)
+    array.push_back("bounds");
+  if (metrics & gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA)
+    array.push_back("workArea");
+  if (metrics & gfx::DisplayObserver::DISPLAY_METRIC_DEVICE_SCALE_FACTOR)
+    array.push_back("scaleFactor");
+  if (metrics & gfx::DisplayObserver::DISPLAY_METRIC_ROTATION)
+    array.push_back("rotation");
+  return array;
+}
+
+}  // namespace
+
+Screen::Screen(gfx::Screen* screen) : screen_(screen) {
+  displays_ = screen_->GetAllDisplays();
+  screen_->AddObserver(this);
+}
+
+Screen::~Screen() {
+  screen_->RemoveObserver(this);
+}
+
+gfx::Point Screen::GetCursorScreenPoint() {
+  return screen_->GetCursorScreenPoint();
+}
+
+gfx::Display Screen::GetPrimaryDisplay() {
+  return screen_->GetPrimaryDisplay();
+}
+
+std::vector<gfx::Display> Screen::GetAllDisplays() {
+  return displays_;
+}
+
+gfx::Display Screen::GetDisplayNearestPoint(const gfx::Point& point) {
+  return screen_->GetDisplayNearestPoint(point);
+}
+
+gfx::Display Screen::GetDisplayMatching(const gfx::Rect& match_rect) {
+  return screen_->GetDisplayMatching(match_rect);
+}
+
+void Screen::OnDisplayAdded(const gfx::Display& new_display) {
+  displays_.push_back(new_display);
+  Emit("display-added", new_display);
+}
+
+void Screen::OnDisplayRemoved(const gfx::Display& old_display) {
+  auto iter = FindById(&displays_, old_display.id());
+  if (iter == displays_.end())
+    return;
+
+  displays_.erase(iter);
+  Emit("display-removed", old_display);
+}
+
+void Screen::OnDisplayMetricsChanged(const gfx::Display& display,
+                                     uint32_t changed_metrics) {
+  auto iter = FindById(&displays_, display.id());
+  if (iter == displays_.end())
+    return;
+
+  *iter = display;
+  Emit("display-metrics-changed", display, MetricsToArray(changed_metrics));
+}
+
+mate::ObjectTemplateBuilder Screen::GetObjectTemplateBuilder(
+    v8::Isolate* isolate) {
+  return mate::ObjectTemplateBuilder(isolate)
+      .SetMethod("getCursorScreenPoint", &Screen::GetCursorScreenPoint)
+      .SetMethod("getPrimaryDisplay", &Screen::GetPrimaryDisplay)
+      .SetMethod("getAllDisplays", &Screen::GetAllDisplays)
+      .SetMethod("getDisplayNearestPoint", &Screen::GetDisplayNearestPoint)
+      .SetMethod("getDisplayMatching", &Screen::GetDisplayMatching);
+}
+
+// static
+v8::Local<v8::Value> Screen::Create(v8::Isolate* isolate) {
+  if (!Browser::Get()->is_ready()) {
+    isolate->ThrowException(v8::Exception::Error(mate::StringToV8(
+        isolate,
+        "Cannot initialize \"screen\" module before app is ready")));
+    return v8::Null(isolate);
+  }
+
+  gfx::Screen* screen = gfx::Screen::GetNativeScreen();
+  if (!screen) {
+    isolate->ThrowException(v8::Exception::Error(mate::StringToV8(
+        isolate, "Failed to get screen information")));
+    return v8::Null(isolate);
+  }
+
+  return mate::CreateHandle(isolate, new Screen(screen)).ToV8();
+}
+
+}  // namespace api
+
+}  // namespace atom
+
+namespace {
+
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
+  mate::Dictionary dict(context->GetIsolate(), exports);
+  dict.Set("screen", atom::api::Screen::Create(context->GetIsolate()));
+}
+
+}  // namespace
+
+NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_common_screen, Initialize)
--- a/atom/browser/api/atom_api_screen.h
+++ b/atom/browser/api/atom_api_screen.h
@@ -0,0 +1,60 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_ATOM_API_SCREEN_H_
+#define ATOM_BROWSER_API_ATOM_API_SCREEN_H_
+
+#include <vector>
+
+#include "atom/browser/api/event_emitter.h"
+#include "native_mate/handle.h"
+#include "ui/gfx/display_observer.h"
+
+namespace gfx {
+class Point;
+class Rect;
+class Screen;
+}
+
+namespace atom {
+
+namespace api {
+
+class Screen : public mate::EventEmitter,
+               public gfx::DisplayObserver {
+ public:
+  static v8::Local<v8::Value> Create(v8::Isolate* isolate);
+
+ protected:
+  explicit Screen(gfx::Screen* screen);
+  virtual ~Screen();
+
+  gfx::Point GetCursorScreenPoint();
+  gfx::Display GetPrimaryDisplay();
+  std::vector<gfx::Display> GetAllDisplays();
+  gfx::Display GetDisplayNearestPoint(const gfx::Point& point);
+  gfx::Display GetDisplayMatching(const gfx::Rect& match_rect);
+
+  // gfx::DisplayObserver:
+  void OnDisplayAdded(const gfx::Display& new_display) override;
+  void OnDisplayRemoved(const gfx::Display& old_display) override;
+  void OnDisplayMetricsChanged(const gfx::Display& display,
+                               uint32_t changed_metrics) override;
+
+  // mate::Wrappable:
+  mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
+      v8::Isolate* isolate) override;
+
+ private:
+  gfx::Screen* screen_;
+  std::vector<gfx::Display> displays_;
+
+  DISALLOW_COPY_AND_ASSIGN(Screen);
+};
+
+}  // namespace api
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_API_ATOM_API_SCREEN_H_
--- a/atom/browser/api/atom_api_session.cc
+++ b/atom/browser/api/atom_api_session.cc
@@ -0,0 +1,434 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/atom_api_session.h"
+
+#include <string>
+#include <vector>
+
+#include "atom/browser/api/atom_api_cookies.h"
+#include "atom/browser/api/atom_api_download_item.h"
+#include "atom/browser/api/atom_api_web_contents.h"
+#include "atom/browser/api/save_page_handler.h"
+#include "atom/browser/atom_browser_context.h"
+#include "atom/browser/atom_browser_main_parts.h"
+#include "atom/browser/net/atom_cert_verifier.h"
+#include "atom/common/native_mate_converters/callback.h"
+#include "atom/common/native_mate_converters/gurl_converter.h"
+#include "atom/common/native_mate_converters/file_path_converter.h"
+#include "atom/common/native_mate_converters/net_converter.h"
+#include "atom/common/node_includes.h"
+#include "base/files/file_path.h"
+#include "base/prefs/pref_service.h"
+#include "base/strings/string_util.h"
+#include "base/thread_task_runner_handle.h"
+#include "brightray/browser/net/devtools_network_conditions.h"
+#include "brightray/browser/net/devtools_network_controller.h"
+#include "chrome/common/pref_names.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/storage_partition.h"
+#include "native_mate/dictionary.h"
+#include "native_mate/object_template_builder.h"
+#include "net/base/load_flags.h"
+#include "net/disk_cache/disk_cache.h"
+#include "net/proxy/proxy_service.h"
+#include "net/proxy/proxy_config_service_fixed.h"
+#include "net/url_request/url_request_context.h"
+#include "net/url_request/url_request_context_getter.h"
+
+using content::BrowserThread;
+using content::StoragePartition;
+
+namespace {
+
+struct ClearStorageDataOptions {
+  GURL origin;
+  uint32 storage_types = StoragePartition::REMOVE_DATA_MASK_ALL;
+  uint32 quota_types = StoragePartition::QUOTA_MANAGED_STORAGE_MASK_ALL;
+};
+
+uint32 GetStorageMask(const std::vector<std::string>& storage_types) {
+  uint32 storage_mask = 0;
+  for (const auto& it : storage_types) {
+    auto type = base::StringToLowerASCII(it);
+    if (type == "appcache")
+      storage_mask |= StoragePartition::REMOVE_DATA_MASK_APPCACHE;
+    else if (type == "cookies")
+      storage_mask |= StoragePartition::REMOVE_DATA_MASK_COOKIES;
+    else if (type == "filesystem")
+      storage_mask |= StoragePartition::REMOVE_DATA_MASK_FILE_SYSTEMS;
+    else if (type == "indexdb")
+      storage_mask |= StoragePartition::REMOVE_DATA_MASK_INDEXEDDB;
+    else if (type == "localstorage")
+      storage_mask |= StoragePartition::REMOVE_DATA_MASK_LOCAL_STORAGE;
+    else if (type == "shadercache")
+      storage_mask |= StoragePartition::REMOVE_DATA_MASK_SHADER_CACHE;
+    else if (type == "websql")
+      storage_mask |= StoragePartition::REMOVE_DATA_MASK_WEBSQL;
+    else if (type == "serviceworkers")
+      storage_mask |= StoragePartition::REMOVE_DATA_MASK_SERVICE_WORKERS;
+  }
+  return storage_mask;
+}
+
+uint32 GetQuotaMask(const std::vector<std::string>& quota_types) {
+  uint32 quota_mask = 0;
+  for (const auto& it : quota_types) {
+    auto type = base::StringToLowerASCII(it);
+    if (type == "temporary")
+      quota_mask |= StoragePartition::QUOTA_MANAGED_STORAGE_MASK_TEMPORARY;
+    else if (type == "persistent")
+      quota_mask |= StoragePartition::QUOTA_MANAGED_STORAGE_MASK_PERSISTENT;
+    else if (type == "syncable")
+      quota_mask |= StoragePartition::QUOTA_MANAGED_STORAGE_MASK_SYNCABLE;
+  }
+  return quota_mask;
+}
+
+}  // namespace
+
+namespace mate {
+
+template<>
+struct Converter<ClearStorageDataOptions> {
+  static bool FromV8(v8::Isolate* isolate,
+                     v8::Local<v8::Value> val,
+                     ClearStorageDataOptions* out) {
+    mate::Dictionary options;
+    if (!ConvertFromV8(isolate, val, &options))
+      return false;
+    options.Get("origin", &out->origin);
+    std::vector<std::string> types;
+    if (options.Get("storages", &types))
+      out->storage_types = GetStorageMask(types);
+    if (options.Get("quotas", &types))
+      out->quota_types = GetQuotaMask(types);
+    return true;
+  }
+};
+
+template<>
+struct Converter<net::ProxyConfig> {
+  static bool FromV8(v8::Isolate* isolate,
+                     v8::Local<v8::Value> val,
+                     net::ProxyConfig* out) {
+    std::string proxy;
+    if (!ConvertFromV8(isolate, val, &proxy))
+      return false;
+    auto pac_url = GURL(proxy);
+    if (pac_url.is_valid()) {
+      out->set_pac_url(pac_url);
+    } else {
+      out->proxy_rules().ParseFromString(proxy);
+    }
+    return true;
+  }
+};
+
+}  // namespace mate
+
+namespace atom {
+
+namespace api {
+
+namespace {
+
+// The wrapSession funtion which is implemented in JavaScript
+using WrapSessionCallback = base::Callback<void(v8::Local<v8::Value>)>;
+WrapSessionCallback g_wrap_session;
+
+class ResolveProxyHelper {
+ public:
+  ResolveProxyHelper(AtomBrowserContext* browser_context,
+                     const GURL& url,
+                     Session::ResolveProxyCallback callback)
+      : callback_(callback),
+        original_thread_(base::ThreadTaskRunnerHandle::Get()) {
+    scoped_refptr<net::URLRequestContextGetter> context_getter =
+        browser_context->GetRequestContext();
+    context_getter->GetNetworkTaskRunner()->PostTask(
+        FROM_HERE,
+        base::Bind(&ResolveProxyHelper::ResolveProxy,
+                   base::Unretained(this), context_getter, url));
+  }
+
+  void OnResolveProxyCompleted(int result) {
+    std::string proxy;
+    if (result == net::OK)
+      proxy = proxy_info_.ToPacString();
+    original_thread_->PostTask(FROM_HERE,
+                               base::Bind(callback_, proxy));
+    delete this;
+  }
+
+ private:
+  void ResolveProxy(scoped_refptr<net::URLRequestContextGetter> context_getter,
+                    const GURL& url) {
+    DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
+
+    net::ProxyService* proxy_service =
+        context_getter->GetURLRequestContext()->proxy_service();
+    net::CompletionCallback completion_callback =
+        base::Bind(&ResolveProxyHelper::OnResolveProxyCompleted,
+                   base::Unretained(this));
+
+    // Start the request.
+    int result = proxy_service->ResolveProxy(
+        url, net::LOAD_NORMAL, &proxy_info_, completion_callback,
+        &pac_req_, nullptr, net::BoundNetLog());
+
+    // Completed synchronously.
+    if (result != net::ERR_IO_PENDING)
+      completion_callback.Run(result);
+  }
+
+  Session::ResolveProxyCallback callback_;
+  net::ProxyInfo proxy_info_;
+  net::ProxyService::PacRequest* pac_req_;
+  scoped_refptr<base::SingleThreadTaskRunner> original_thread_;
+
+  DISALLOW_COPY_AND_ASSIGN(ResolveProxyHelper);
+};
+
+// Runs the callback in UI thread.
+template <typename ...T>
+void RunCallbackInUI(const base::Callback<void(T...)>& callback, T... result) {
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE, base::Bind(callback, result...));
+}
+
+// Callback of HttpCache::GetBackend.
+void OnGetBackend(disk_cache::Backend** backend_ptr,
+                  const net::CompletionCallback& callback,
+                  int result) {
+  if (result != net::OK) {
+    RunCallbackInUI(callback, result);
+  } else if (backend_ptr && *backend_ptr) {
+    (*backend_ptr)->DoomAllEntries(base::Bind(&RunCallbackInUI<int>, callback));
+  } else {
+    RunCallbackInUI<int>(callback, net::ERR_FAILED);
+  }
+}
+
+void ClearHttpCacheInIO(
+    const scoped_refptr<net::URLRequestContextGetter>& context_getter,
+    const net::CompletionCallback& callback) {
+  auto request_context = context_getter->GetURLRequestContext();
+  auto http_cache = request_context->http_transaction_factory()->GetCache();
+  if (!http_cache)
+    RunCallbackInUI<int>(callback, net::ERR_FAILED);
+
+  // Call GetBackend and make the backend's ptr accessable in OnGetBackend.
+  using BackendPtr = disk_cache::Backend*;
+  BackendPtr* backend_ptr = new BackendPtr(nullptr);
+  net::CompletionCallback on_get_backend =
+      base::Bind(&OnGetBackend, base::Owned(backend_ptr), callback);
+  int rv = http_cache->GetBackend(backend_ptr, on_get_backend);
+  if (rv != net::ERR_IO_PENDING)
+    on_get_backend.Run(net::OK);
+}
+
+void SetProxyInIO(net::URLRequestContextGetter* getter,
+                  const net::ProxyConfig& config,
+                  const base::Closure& callback) {
+  auto proxy_service = getter->GetURLRequestContext()->proxy_service();
+  proxy_service->ResetConfigService(new net::ProxyConfigServiceFixed(config));
+  // Refetches and applies the new pac script if provided.
+  proxy_service->ForceReloadProxyConfig();
+  RunCallbackInUI(callback);
+}
+
+}  // namespace
+
+Session::Session(AtomBrowserContext* browser_context)
+    : browser_context_(browser_context) {
+  AttachAsUserData(browser_context);
+
+  // Observe DownloadManger to get download notifications.
+  content::BrowserContext::GetDownloadManager(browser_context)->
+      AddObserver(this);
+}
+
+Session::~Session() {
+  content::BrowserContext::GetDownloadManager(browser_context())->
+      RemoveObserver(this);
+}
+
+void Session::OnDownloadCreated(content::DownloadManager* manager,
+                                content::DownloadItem* item) {
+  auto web_contents = item->GetWebContents();
+  if (SavePageHandler::IsSavePageTypes(item->GetMimeType()))
+    return;
+  bool prevent_default = Emit(
+      "will-download",
+      DownloadItem::Create(isolate(), item),
+      api::WebContents::CreateFrom(isolate(), web_contents));
+  if (prevent_default) {
+    item->Cancel(true);
+    item->Remove();
+  }
+}
+
+void Session::ResolveProxy(const GURL& url, ResolveProxyCallback callback) {
+  new ResolveProxyHelper(browser_context(), url, callback);
+}
+
+void Session::ClearCache(const net::CompletionCallback& callback) {
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      base::Bind(&ClearHttpCacheInIO,
+                 make_scoped_refptr(browser_context_->GetRequestContext()),
+                 callback));
+}
+
+void Session::ClearStorageData(mate::Arguments* args) {
+  // clearStorageData([options, ]callback)
+  ClearStorageDataOptions options;
+  args->GetNext(&options);
+  base::Closure callback;
+  if (!args->GetNext(&callback)) {
+    args->ThrowError();
+    return;
+  }
+
+  auto storage_partition =
+      content::BrowserContext::GetStoragePartition(browser_context(), nullptr);
+  storage_partition->ClearData(
+      options.storage_types, options.quota_types, options.origin,
+      content::StoragePartition::OriginMatcherFunction(),
+      base::Time(), base::Time::Max(), callback);
+}
+
+void Session::SetProxy(const net::ProxyConfig& config,
+                       const base::Closure& callback) {
+  auto getter = browser_context_->GetRequestContext();
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      base::Bind(&SetProxyInIO, base::Unretained(getter), config, callback));
+}
+
+void Session::SetDownloadPath(const base::FilePath& path) {
+  browser_context_->prefs()->SetFilePath(
+      prefs::kDownloadDefaultDirectory, path);
+}
+
+void Session::EnableNetworkEmulation(const mate::Dictionary& options) {
+  scoped_ptr<brightray::DevToolsNetworkConditions> conditions;
+  bool offline = false;
+  double latency, download_throughput, upload_throughput;
+  if (options.Get("offline", &offline) && offline) {
+    conditions.reset(new brightray::DevToolsNetworkConditions(offline));
+  } else {
+    options.Get("latency", &latency);
+    options.Get("downloadThroughput", &download_throughput);
+    options.Get("uploadThroughput", &upload_throughput);
+    conditions.reset(
+        new brightray::DevToolsNetworkConditions(false,
+                                                 latency,
+                                                 download_throughput,
+                                                 upload_throughput));
+  }
+  auto controller = browser_context_->GetDevToolsNetworkController();
+
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      base::Bind(&brightray::DevToolsNetworkController::SetNetworkState,
+                 base::Unretained(controller),
+                 std::string(),
+                 base::Passed(&conditions)));
+}
+
+void Session::DisableNetworkEmulation() {
+  scoped_ptr<brightray::DevToolsNetworkConditions> conditions(
+      new brightray::DevToolsNetworkConditions(false));
+  auto controller = browser_context_->GetDevToolsNetworkController();
+
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      base::Bind(&brightray::DevToolsNetworkController::SetNetworkState,
+                 base::Unretained(controller),
+                 std::string(),
+                 base::Passed(&conditions)));
+}
+
+void Session::SetCertVerifyProc(v8::Local<v8::Value> val,
+                                mate::Arguments* args) {
+  AtomCertVerifier::VerifyProc proc;
+  if (!(val->IsNull() || mate::ConvertFromV8(args->isolate(), val, &proc))) {
+    args->ThrowError("Must pass null or function");
+    return;
+  }
+
+  browser_context_->cert_verifier()->SetVerifyProc(proc);
+}
+
+v8::Local<v8::Value> Session::Cookies(v8::Isolate* isolate) {
+  if (cookies_.IsEmpty()) {
+    auto handle = atom::api::Cookies::Create(isolate, browser_context());
+    cookies_.Reset(isolate, handle.ToV8());
+  }
+  return v8::Local<v8::Value>::New(isolate, cookies_);
+}
+
+// static
+mate::Handle<Session> Session::CreateFrom(
+    v8::Isolate* isolate, AtomBrowserContext* browser_context) {
+  auto existing = TrackableObject::FromWrappedClass(isolate, browser_context);
+  if (existing)
+    return mate::CreateHandle(isolate, static_cast<Session*>(existing));
+
+  auto handle = mate::CreateHandle(isolate, new Session(browser_context));
+  g_wrap_session.Run(handle.ToV8());
+  return handle;
+}
+
+// static
+mate::Handle<Session> Session::FromPartition(
+    v8::Isolate* isolate, const std::string& partition, bool in_memory) {
+  auto browser_context = brightray::BrowserContext::From(partition, in_memory);
+  return CreateFrom(isolate,
+                    static_cast<AtomBrowserContext*>(browser_context.get()));
+}
+
+// static
+void Session::BuildPrototype(v8::Isolate* isolate,
+                             v8::Local<v8::ObjectTemplate> prototype) {
+  mate::ObjectTemplateBuilder(isolate, prototype)
+      .MakeDestroyable()
+      .SetMethod("resolveProxy", &Session::ResolveProxy)
+      .SetMethod("clearCache", &Session::ClearCache)
+      .SetMethod("clearStorageData", &Session::ClearStorageData)
+      .SetMethod("setProxy", &Session::SetProxy)
+      .SetMethod("setDownloadPath", &Session::SetDownloadPath)
+      .SetMethod("enableNetworkEmulation", &Session::EnableNetworkEmulation)
+      .SetMethod("disableNetworkEmulation", &Session::DisableNetworkEmulation)
+      .SetMethod("setCertificateVerifyProc", &Session::SetCertVerifyProc)
+      .SetProperty("cookies", &Session::Cookies);
+}
+
+void ClearWrapSession() {
+  g_wrap_session.Reset();
+}
+
+void SetWrapSession(const WrapSessionCallback& callback) {
+  g_wrap_session = callback;
+
+  // Cleanup the wrapper on exit.
+  atom::AtomBrowserMainParts::Get()->RegisterDestructionCallback(
+      base::Bind(ClearWrapSession));
+}
+
+}  // namespace api
+
+}  // namespace atom
+
+namespace {
+
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
+  v8::Isolate* isolate = context->GetIsolate();
+  mate::Dictionary dict(isolate, exports);
+  dict.SetMethod("fromPartition", &atom::api::Session::FromPartition);
+  dict.SetMethod("_setWrapSession", &atom::api::SetWrapSession);
+}
+
+}  // namespace
+
+NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_browser_session, Initialize)
--- a/atom/browser/api/atom_api_session.h
+++ b/atom/browser/api/atom_api_session.h
@@ -0,0 +1,86 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_ATOM_API_SESSION_H_
+#define ATOM_BROWSER_API_ATOM_API_SESSION_H_
+
+#include <string>
+
+#include "atom/browser/api/trackable_object.h"
+#include "content/public/browser/download_manager.h"
+#include "native_mate/handle.h"
+#include "net/base/completion_callback.h"
+
+class GURL;
+
+namespace base {
+class FilePath;
+}
+
+namespace mate {
+class Arguments;
+class Dictionary;
+}
+
+namespace net {
+class ProxyConfig;
+}
+
+namespace atom {
+
+class AtomBrowserContext;
+
+namespace api {
+
+class Session: public mate::TrackableObject<Session>,
+               public content::DownloadManager::Observer {
+ public:
+  using ResolveProxyCallback = base::Callback<void(std::string)>;
+
+  // Gets or creates Session from the |browser_context|.
+  static mate::Handle<Session> CreateFrom(
+      v8::Isolate* isolate, AtomBrowserContext* browser_context);
+
+  // Gets the Session of |partition| and |in_memory|.
+  static mate::Handle<Session> FromPartition(
+      v8::Isolate* isolate, const std::string& partition, bool in_memory);
+
+  AtomBrowserContext* browser_context() const { return browser_context_.get(); }
+
+  // mate::TrackableObject:
+  static void BuildPrototype(v8::Isolate* isolate,
+                             v8::Local<v8::ObjectTemplate> prototype);
+
+ protected:
+  explicit Session(AtomBrowserContext* browser_context);
+  ~Session();
+
+  // content::DownloadManager::Observer:
+  void OnDownloadCreated(content::DownloadManager* manager,
+                         content::DownloadItem* item) override;
+
+ private:
+  void ResolveProxy(const GURL& url, ResolveProxyCallback callback);
+  void ClearCache(const net::CompletionCallback& callback);
+  void ClearStorageData(mate::Arguments* args);
+  void SetProxy(const net::ProxyConfig& config, const base::Closure& callback);
+  void SetDownloadPath(const base::FilePath& path);
+  void EnableNetworkEmulation(const mate::Dictionary& options);
+  void DisableNetworkEmulation();
+  void SetCertVerifyProc(v8::Local<v8::Value> proc, mate::Arguments* args);
+  v8::Local<v8::Value> Cookies(v8::Isolate* isolate);
+
+  // Cached object for cookies API.
+  v8::Global<v8::Value> cookies_;
+
+  scoped_refptr<AtomBrowserContext> browser_context_;
+
+  DISALLOW_COPY_AND_ASSIGN(Session);
+};
+
+}  // namespace api
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_API_ATOM_API_SESSION_H_
--- a/atom/browser/api/atom_api_tray.cc
+++ b/atom/browser/api/atom_api_tray.cc
@@ -7,18 +7,22 @@
 #include <string>

 #include "atom/browser/api/atom_api_menu.h"
+#include "atom/browser/browser.h"
 #include "atom/browser/ui/tray_icon.h"
+#include "atom/common/native_mate_converters/gfx_converter.h"
 #include "atom/common/native_mate_converters/image_converter.h"
+#include "atom/common/native_mate_converters/string16_converter.h"
+#include "atom/common/node_includes.h"
 #include "native_mate/constructor.h"
 #include "native_mate/dictionary.h"
-
-#include "atom/common/node_includes.h"
+#include "ui/events/event_constants.h"
+#include "ui/gfx/image/image.h"

 namespace atom {

 namespace api {

-Tray::Tray(const gfx::ImageSkia& image)
+Tray::Tray(const gfx::Image& image)
    : tray_icon_(TrayIcon::Create()) {
  tray_icon_->SetImage(image);
  tray_icon_->AddObserver(this);
@@ -28,51 +32,136 @@ Tray::~Tray() {
 }

 // static
-mate::Wrappable* Tray::New(const gfx::ImageSkia& image) {
+mate::Wrappable* Tray::New(v8::Isolate* isolate, const gfx::Image& image) {
+  if (!Browser::Get()->is_ready()) {
+    isolate->ThrowException(v8::Exception::Error(mate::StringToV8(
+        isolate, "Cannot create Tray before app is ready")));
+    return nullptr;
+  }
  return new Tray(image);
 }

-void Tray::OnClicked() {
-  Emit("clicked");
+void Tray::OnClicked(const gfx::Rect& bounds, int modifiers) {
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+  EmitCustomEvent("click",
+                  ModifiersToObject(isolate(), modifiers), bounds);
 }

-void Tray::OnDoubleClicked() {
-  Emit("double-clicked");
+void Tray::OnDoubleClicked(const gfx::Rect& bounds, int modifiers) {
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+  EmitCustomEvent("double-click",
+                  ModifiersToObject(isolate(), modifiers), bounds);
 }

-void Tray::SetImage(const gfx::ImageSkia& image) {
+void Tray::OnRightClicked(const gfx::Rect& bounds, int modifiers) {
+  v8::Locker locker(isolate());
+  v8::HandleScope handle_scope(isolate());
+  EmitCustomEvent("right-click",
+                  ModifiersToObject(isolate(), modifiers), bounds);
+}
+
+void Tray::OnBalloonShow() {
+  Emit("balloon-show");
+}
+
+void Tray::OnBalloonClicked() {
+  Emit("balloon-click");
+}
+
+void Tray::OnBalloonClosed() {
+  Emit("balloon-closed");
+}
+
+void Tray::OnDrop() {
+  Emit("drop");
+}
+
+void Tray::OnDropFiles(const std::vector<std::string>& files) {
+  Emit("drop-files", files);
+}
+
+void Tray::OnDragEntered() {
+  Emit("drag-enter");
+}
+
+void Tray::OnDragExited() {
+  Emit("drag-leave");
+}
+
+void Tray::OnDragEnded() {
+  Emit("drag-end");
+}
+
+void Tray::SetImage(mate::Arguments* args, const gfx::Image& image) {
  tray_icon_->SetImage(image);
 }

-void Tray::SetPressedImage(const gfx::ImageSkia& image) {
+void Tray::SetPressedImage(mate::Arguments* args, const gfx::Image& image) {
  tray_icon_->SetPressedImage(image);
 }

-void Tray::SetToolTip(const std::string& tool_tip) {
+void Tray::SetToolTip(mate::Arguments* args, const std::string& tool_tip) {
  tray_icon_->SetToolTip(tool_tip);
 }

-void Tray::SetTitle(const std::string& title) {
+void Tray::SetTitle(mate::Arguments* args, const std::string& title) {
  tray_icon_->SetTitle(title);
 }

-void Tray::SetHighlightMode(bool highlight) {
+void Tray::SetHighlightMode(mate::Arguments* args, bool highlight) {
  tray_icon_->SetHighlightMode(highlight);
 }

-void Tray::SetContextMenu(Menu* menu) {
+void Tray::DisplayBalloon(mate::Arguments* args,
+                          const mate::Dictionary& options) {
+  gfx::Image icon;
+  options.Get("icon", &icon);
+  base::string16 title, content;
+  if (!options.Get("title", &title) ||
+      !options.Get("content", &content)) {
+    args->ThrowError("'title' and 'content' must be defined");
+    return;
+  }
+
+  tray_icon_->DisplayBalloon(icon, title, content);
+}
+
+void Tray::PopUpContextMenu(mate::Arguments* args) {
+  mate::Handle<Menu> menu;
+  args->GetNext(&menu);
+  gfx::Point pos;
+  args->GetNext(&pos);
+  tray_icon_->PopUpContextMenu(pos, menu.IsEmpty() ? nullptr : menu->model());
+}
+
+void Tray::SetContextMenu(mate::Arguments* args, Menu* menu) {
  tray_icon_->SetContextMenu(menu->model());
 }

+v8::Local<v8::Object> Tray::ModifiersToObject(v8::Isolate* isolate,
+                                              int modifiers) {
+  mate::Dictionary obj(isolate, v8::Object::New(isolate));
+  obj.Set("shiftKey", static_cast<bool>(modifiers & ui::EF_SHIFT_DOWN));
+  obj.Set("ctrlKey", static_cast<bool>(modifiers & ui::EF_CONTROL_DOWN));
+  obj.Set("altKey", static_cast<bool>(modifiers & ui::EF_ALT_DOWN));
+  obj.Set("metaKey", static_cast<bool>(modifiers & ui::EF_COMMAND_DOWN));
+  return obj.GetHandle();
+}
+
 // static
 void Tray::BuildPrototype(v8::Isolate* isolate,
-                          v8::Handle<v8::ObjectTemplate> prototype) {
+                          v8::Local<v8::ObjectTemplate> prototype) {
  mate::ObjectTemplateBuilder(isolate, prototype)
+      .MakeDestroyable()
      .SetMethod("setImage", &Tray::SetImage)
      .SetMethod("setPressedImage", &Tray::SetPressedImage)
      .SetMethod("setToolTip", &Tray::SetToolTip)
      .SetMethod("setTitle", &Tray::SetTitle)
      .SetMethod("setHighlightMode", &Tray::SetHighlightMode)
+      .SetMethod("displayBalloon", &Tray::DisplayBalloon)
+      .SetMethod("popUpContextMenu", &Tray::PopUpContextMenu)
      .SetMethod("_setContextMenu", &Tray::SetContextMenu);
 }

@@ -83,14 +172,14 @@ void Tray::BuildPrototype(v8::Isolate* isolate,

 namespace {

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
  using atom::api::Tray;
  v8::Isolate* isolate = context->GetIsolate();
-  v8::Handle<v8::Function> constructor = mate::CreateConstructor<Tray>(
+  v8::Local<v8::Function> constructor = mate::CreateConstructor<Tray>(
      isolate, "Tray", base::Bind(&Tray::New));
  mate::Dictionary dict(isolate, exports);
-  dict.Set("Tray", static_cast<v8::Handle<v8::Value>>(constructor));
+  dict.Set("Tray", static_cast<v8::Local<v8::Value>>(constructor));
 }

 }  // namespace
--- a/atom/browser/api/atom_api_tray.h
+++ b/atom/browser/api/atom_api_tray.h
@@ -6,13 +6,19 @@
 #define ATOM_BROWSER_API_ATOM_API_TRAY_H_

 #include <string>
+#include <vector>

-#include "atom/browser/api/event_emitter.h"
+#include "atom/browser/api/trackable_object.h"
 #include "atom/browser/ui/tray_icon_observer.h"
 #include "base/memory/scoped_ptr.h"

 namespace gfx {
-class ImageSkia;
+class Image;
+}
+
+namespace mate {
+class Arguments;
+class Dictionary;
 }

 namespace atom {
@@ -23,30 +29,43 @@ namespace api {

 class Menu;

-class Tray : public mate::EventEmitter,
+class Tray : public mate::TrackableObject<Tray>,
             public TrayIconObserver {
 public:
-  static mate::Wrappable* New(const gfx::ImageSkia& image);
+  static mate::Wrappable* New(v8::Isolate* isolate, const gfx::Image& image);

  static void BuildPrototype(v8::Isolate* isolate,
-                             v8::Handle<v8::ObjectTemplate> prototype);
+                             v8::Local<v8::ObjectTemplate> prototype);

 protected:
-  explicit Tray(const gfx::ImageSkia& image);
-  virtual ~Tray();
+  explicit Tray(const gfx::Image& image);
+  ~Tray() override;

-  // TrayIcon implementations:
-  virtual void OnClicked() OVERRIDE;
-  virtual void OnDoubleClicked() OVERRIDE;
+  // TrayIconObserver:
+  void OnClicked(const gfx::Rect& bounds, int modifiers) override;
+  void OnDoubleClicked(const gfx::Rect& bounds, int modifiers) override;
+  void OnRightClicked(const gfx::Rect& bounds, int modifiers) override;
+  void OnBalloonShow() override;
+  void OnBalloonClicked() override;
+  void OnBalloonClosed() override;
+  void OnDrop() override;
+  void OnDropFiles(const std::vector<std::string>& files) override;
+  void OnDragEntered() override;
+  void OnDragExited() override;
+  void OnDragEnded() override;

-  void SetImage(const gfx::ImageSkia& image);
-  void SetPressedImage(const gfx::ImageSkia& image);
-  void SetToolTip(const std::string& tool_tip);
-  void SetTitle(const std::string& title);
-  void SetHighlightMode(bool highlight);
-  void SetContextMenu(Menu* menu);
+  void SetImage(mate::Arguments* args, const gfx::Image& image);
+  void SetPressedImage(mate::Arguments* args, const gfx::Image& image);
+  void SetToolTip(mate::Arguments* args, const std::string& tool_tip);
+  void SetTitle(mate::Arguments* args, const std::string& title);
+  void SetHighlightMode(mate::Arguments* args, bool highlight);
+  void DisplayBalloon(mate::Arguments* args, const mate::Dictionary& options);
+  void PopUpContextMenu(mate::Arguments* args);
+  void SetContextMenu(mate::Arguments* args, Menu* menu);

 private:
+  v8::Local<v8::Object> ModifiersToObject(v8::Isolate* isolate, int modifiers);
+
  scoped_ptr<TrayIcon> tray_icon_;

  DISALLOW_COPY_AND_ASSIGN(Tray);
--- a/atom/browser/api/atom_api_web_contents.cc
+++ b/atom/browser/api/atom_api_web_contents.cc
--- a/atom/browser/api/atom_api_web_contents.h
+++ b/atom/browser/api/atom_api_web_contents.h
@@ -6,31 +6,46 @@
 #define ATOM_BROWSER_API_ATOM_API_WEB_CONTENTS_H_

 #include <string>
+#include <vector>

-#include "atom/browser/api/event_emitter.h"
-#include "brightray/browser/default_web_contents_delegate.h"
-#include "content/public/browser/browser_plugin_guest_delegate.h"
-#include "content/public/browser/web_contents_delegate.h"
+#include "atom/browser/api/frame_subscriber.h"
+#include "atom/browser/api/save_page_handler.h"
+#include "atom/browser/api/trackable_object.h"
+#include "atom/browser/common_web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
+#include "content/public/common/favicon_url.h"
 #include "native_mate/handle.h"
+#include "ui/gfx/image/image.h"
+
+namespace blink {
+struct WebDeviceEmulationParams;
+}

 namespace brightray {
 class InspectableWebContents;
 }

 namespace mate {
+class Arguments;
 class Dictionary;
 }

 namespace atom {

+struct SetSizeParams;
+class AtomBrowserContext;
+class WebViewGuestDelegate;
+
 namespace api {

-class WebContents : public mate::EventEmitter,
-                    public content::BrowserPluginGuestDelegate,
-                    public content::WebContentsDelegate,
+class WebContents : public mate::TrackableObject<WebContents>,
+                    public CommonWebContentsDelegate,
                    public content::WebContentsObserver {
 public:
+  // For node.js callback function type: function(error, buffer)
+  using PrintToPDFCallback =
+      base::Callback<void(v8::Local<v8::Value>, v8::Local<v8::Value>)>;
+
  // Create from an existing WebContents.
  static mate::Handle<WebContents> CreateFrom(
      v8::Isolate* isolate, content::WebContents* web_contents);
@@ -39,62 +54,103 @@ class WebContents : public mate::EventEmitter,
  static mate::Handle<WebContents> Create(
      v8::Isolate* isolate, const mate::Dictionary& options);

-  void Destroy();
-  bool IsAlive() const;
+  int GetID() const;
+  bool Equal(const WebContents* web_contents) const;
  void LoadURL(const GURL& url, const mate::Dictionary& options);
+  void DownloadURL(const GURL& url);
  GURL GetURL() const;
  base::string16 GetTitle() const;
  bool IsLoading() const;
  bool IsWaitingForResponse() const;
  void Stop();
-  void Reload(const mate::Dictionary& options);
-  void ReloadIgnoringCache(const mate::Dictionary& options);
-  bool CanGoBack() const;
-  bool CanGoForward() const;
-  bool CanGoToOffset(int offset) const;
+  void ReloadIgnoringCache();
  void GoBack();
  void GoForward();
-  void GoToIndex(int index);
  void GoToOffset(int offset);
-  int GetRoutingID() const;
-  int GetProcessID() const;
  bool IsCrashed() const;
  void SetUserAgent(const std::string& user_agent);
+  std::string GetUserAgent();
  void InsertCSS(const std::string& css);
-  void ExecuteJavaScript(const base::string16& code);
-  void OpenDevTools();
+  bool SavePage(const base::FilePath& full_file_path,
+                const content::SavePageType& save_type,
+                const SavePageHandler::SavePageCallback& callback);
+  void ExecuteJavaScript(const base::string16& code,
+                         bool has_user_gesture);
+  void OpenDevTools(mate::Arguments* args);
  void CloseDevTools();
  bool IsDevToolsOpened();
+  void ToggleDevTools();
+  void EnableDeviceEmulation(const blink::WebDeviceEmulationParams& params);
+  void DisableDeviceEmulation();
+  void InspectElement(int x, int y);
+  void InspectServiceWorker();
+  void HasServiceWorker(const base::Callback<void(bool)>&);
+  void UnregisterServiceWorker(const base::Callback<void(bool)>&);
+  void SetAudioMuted(bool muted);
+  bool IsAudioMuted();
+  void Print(mate::Arguments* args);
+
+  // Print current page as PDF.
+  void PrintToPDF(const base::DictionaryValue& setting,
+                  const PrintToPDFCallback& callback);
+
+  // DevTools workspace api.
+  void AddWorkSpace(mate::Arguments* args, const base::FilePath& path);
+  void RemoveWorkSpace(mate::Arguments* args, const base::FilePath& path);
+
+  // Editing commands.
+  void Undo();
+  void Redo();
+  void Cut();
+  void Copy();
+  void Paste();
+  void PasteAndMatchStyle();
+  void Delete();
+  void SelectAll();
+  void Unselect();
+  void Replace(const base::string16& word);
+  void ReplaceMisspelling(const base::string16& word);
+
+  // Focus.
+  void Focus();
+  void TabTraverse(bool reverse);
+
+  // Send messages to browser.
  bool SendIPCMessage(const base::string16& channel,
                      const base::ListValue& args);

-  // Toggles autosize mode for corresponding <webview>.
-  void SetAutoSize(bool enabled,
-                   const gfx::Size& min_size,
-                   const gfx::Size& max_size);
+  // Send WebInputEvent to the page.
+  void SendInputEvent(v8::Isolate* isolate, v8::Local<v8::Value> input_event);

-  // Sets the transparency of the guest.
+  // Subscribe to the frame updates.
+  void BeginFrameSubscription(
+      const FrameSubscriber::FrameCaptureCallback& callback);
+  void EndFrameSubscription();
+
+  // Methods for creating <webview>.
+  void SetSize(const SetSizeParams& params);
  void SetAllowTransparency(bool allow);
+  bool IsGuest() const;

-  // Returns whether this is a guest view.
-  bool is_guest() const { return guest_instance_id_ != -1; }
+  // Returns the web preferences of current WebContents.
+  v8::Local<v8::Value> GetWebPreferences(v8::Isolate* isolate);

-  // Returns whether this guest has an associated embedder.
-  bool attached() const { return !!embedder_web_contents_; }
+  // Returns the owner window.
+  v8::Local<v8::Value> GetOwnerBrowserWindow();

-  content::WebContents* web_contents() const {
-    return content::WebContentsObserver::web_contents();
-  }
+  // Properties.
+  v8::Local<v8::Value> Session(v8::Isolate* isolate);
+  v8::Local<v8::Value> DevToolsWebContents(v8::Isolate* isolate);
+
+  // mate::TrackableObject:
+  static void BuildPrototype(v8::Isolate* isolate,
+                             v8::Local<v8::ObjectTemplate> prototype);

 protected:
  explicit WebContents(content::WebContents* web_contents);
-  explicit WebContents(const mate::Dictionary& options);
+  WebContents(v8::Isolate* isolate, const mate::Dictionary& options);
  ~WebContents();

-  // mate::Wrappable:
-  virtual mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
-      v8::Isolate* isolate) override;
-
  // content::WebContentsDelegate:
  bool AddMessageToConsole(content::WebContents* source,
                           int32 level,
@@ -104,58 +160,85 @@ class WebContents : public mate::EventEmitter,
  bool ShouldCreateWebContents(
      content::WebContents* web_contents,
      int route_id,
+      int main_frame_route_id,
      WindowContainerType window_container_type,
-      const base::string16& frame_name,
+      const std::string& frame_name,
      const GURL& target_url,
      const std::string& partition_id,
      content::SessionStorageNamespace* session_storage_namespace) override;
-  void CloseContents(content::WebContents* source) override;
  content::WebContents* OpenURLFromTab(
      content::WebContents* source,
      const content::OpenURLParams& params) override;
+  void BeforeUnloadFired(content::WebContents* tab,
+                         bool proceed,
+                         bool* proceed_to_fire_unload) override;
+  void MoveContents(content::WebContents* source,
+                    const gfx::Rect& pos) override;
+  void CloseContents(content::WebContents* source) override;
+  void ActivateContents(content::WebContents* contents) override;
+  bool IsPopupOrPanel(const content::WebContents* source) const override;
  void HandleKeyboardEvent(
      content::WebContents* source,
      const content::NativeWebKeyboardEvent& event) override;
+  void EnterFullscreenModeForTab(content::WebContents* source,
+                                 const GURL& origin) override;
+  void ExitFullscreenModeForTab(content::WebContents* source) override;
+  void RendererUnresponsive(content::WebContents* source) override;
+  void RendererResponsive(content::WebContents* source) override;
+  bool HandleContextMenu(const content::ContextMenuParams& params) override;

  // content::WebContentsObserver:
-  virtual void RenderViewDeleted(content::RenderViewHost*) override;
-  virtual void RenderProcessGone(base::TerminationStatus status) override;
-  virtual void DidFinishLoad(content::RenderFrameHost* render_frame_host,
-                             const GURL& validated_url) override;
-  virtual void DidFailLoad(content::RenderFrameHost* render_frame_host,
-                           const GURL& validated_url,
-                           int error_code,
-                           const base::string16& error_description) override;
-  virtual void DidStartLoading(
-      content::RenderViewHost* render_view_host) override;
-  virtual void DidStopLoading(
-      content::RenderViewHost* render_view_host) override;
-  virtual void DidGetRedirectForResourceRequest(
-      content::RenderViewHost* render_view_host,
+  void BeforeUnloadFired(const base::TimeTicks& proceed_time) override;
+  void RenderViewDeleted(content::RenderViewHost*) override;
+  void RenderProcessGone(base::TerminationStatus status) override;
+  void DocumentLoadedInFrame(
+      content::RenderFrameHost* render_frame_host) override;
+  void DidFinishLoad(content::RenderFrameHost* render_frame_host,
+                     const GURL& validated_url) override;
+  void DidFailLoad(content::RenderFrameHost* render_frame_host,
+                   const GURL& validated_url,
+                   int error_code,
+                   const base::string16& error_description,
+                   bool was_ignored_by_handler) override;
+  void DidFailProvisionalLoad(content::RenderFrameHost* render_frame_host,
+                              const GURL& validated_url,
+                              int error_code,
+                              const base::string16& error_description,
+                              bool was_ignored_by_handler) override;
+  void DidStartLoading() override;
+  void DidStopLoading() override;
+  void DidGetResourceResponseStart(
+      const content::ResourceRequestDetails& details) override;
+  void DidGetRedirectForResourceRequest(
+      content::RenderFrameHost* render_frame_host,
      const content::ResourceRedirectDetails& details) override;
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
-  virtual void RenderViewReady() override;
-  virtual void WebContentsDestroyed() override;
+  void DidNavigateMainFrame(
+      const content::LoadCommittedDetails& details,
+      const content::FrameNavigateParams& params) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+  void WebContentsDestroyed() override;
+  void NavigationEntryCommitted(
+      const content::LoadCommittedDetails& load_details) override;
+  void TitleWasSet(content::NavigationEntry* entry, bool explicit_set) override;
+  void DidUpdateFaviconURL(
+      const std::vector<content::FaviconURL>& urls) override;
+  void PluginCrashed(const base::FilePath& plugin_path,
+                     base::ProcessId plugin_pid) override;

-  // content::BrowserPluginGuestDelegate:
-  virtual void WillAttach(content::WebContents* embedder_web_contents,
-                          const base::DictionaryValue& extra_params) override;
-  virtual content::WebContents* CreateNewGuestWindow(
-      const content::WebContents::CreateParams& create_params) override;
-  virtual void DidAttach() override;
-  virtual int GetGuestInstanceID() const override;
-  virtual void ElementSizeChanged(const gfx::Size& old_size,
-                                  const gfx::Size& new_size) override;
-  virtual void GuestSizeChanged(const gfx::Size& old_size,
-                                const gfx::Size& new_size) override;
-  virtual void RequestPointerLockPermission(
-      bool user_gesture,
-      bool last_unlocked_by_target,
-      const base::Callback<void(bool enabled)>& callback) override;
-  virtual void RegisterDestructionCallback(
-      const DestructionCallback& callback) override;
+  // brightray::InspectableWebContentsViewDelegate:
+  void DevToolsFocused() override;
+  void DevToolsOpened() override;
+  void DevToolsClosed() override;

 private:
+  enum Type {
+    BROWSER_WINDOW,  // Used by BrowserWindow.
+    WEB_VIEW,  // Used by <webview>.
+    REMOTE,  // Thin wrap around an existing WebContents.
+  };
+
+  AtomBrowserContext* GetBrowserContext() const;
+
  // Called when received a message from renderer.
  void OnRendererMessage(const base::string16& channel,
                         const base::ListValue& args);
@@ -165,44 +248,17 @@ class WebContents : public mate::EventEmitter,
                             const base::ListValue& args,
                             IPC::Message* message);

-  void GuestSizeChangedDueToAutoSize(const gfx::Size& old_size,
-                                     const gfx::Size& new_size);
+  // Called when guests need to be notified of
+  // embedders' zoom level change.
+  void OnZoomLevelChanged(double level);

-  // Unique ID for a guest WebContents.
-  int guest_instance_id_;
+  v8::Global<v8::Value> session_;
+  v8::Global<v8::Value> devtools_web_contents_;

-  DestructionCallback destruction_callback_;
+  scoped_ptr<WebViewGuestDelegate> guest_delegate_;

-  // Stores whether the contents of the guest can be transparent.
-  bool guest_opaque_;
-
-  // The extra parameters associated with this guest view passed
-  // in from JavaScript. This will typically be the view instance ID,
-  // the API to use, and view-specific parameters. These parameters
-  // are passed along to new guests that are created from this guest.
-  scoped_ptr<base::DictionaryValue> extra_params_;
-
-  // Stores the WebContents that managed by this class.
-  scoped_ptr<brightray::InspectableWebContents> storage_;
-
-  // The WebContents that attaches this guest view.
-  content::WebContents* embedder_web_contents_;
-
-  // The size of the container element.
-  gfx::Size element_size_;
-
-  // The size of the guest content. Note: In autosize mode, the container
-  // element may not match the size of the guest.
-  gfx::Size guest_size_;
-
-  // Indicates whether autosize mode is enabled or not.
-  bool auto_size_enabled_;
-
-  // The maximum size constraints of the container element in autosize mode.
-  gfx::Size max_auto_size_;
-
-  // The minimum size constraints of the container element in autosize mode.
-  gfx::Size min_auto_size_;
+  // The type of current WebContents.
+  Type type_;

  DISALLOW_COPY_AND_ASSIGN(WebContents);
 };
--- a/atom/browser/api/atom_api_web_view_manager.cc
+++ b/atom/browser/api/atom_api_web_view_manager.cc
@@ -0,0 +1,71 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/atom_api_web_contents.h"
+#include "atom/browser/web_contents_preferences.h"
+#include "atom/browser/web_view_manager.h"
+#include "atom/common/native_mate_converters/value_converter.h"
+#include "atom/common/node_includes.h"
+#include "content/public/browser/browser_context.h"
+#include "native_mate/dictionary.h"
+
+using atom::WebContentsPreferences;
+
+namespace mate {
+
+template<>
+struct Converter<content::WebContents*> {
+  static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
+                     content::WebContents** out) {
+    atom::api::WebContents* contents;
+    if (!Converter<atom::api::WebContents*>::FromV8(isolate, val, &contents))
+      return false;
+    *out = contents->web_contents();
+    return true;
+  }
+};
+
+}  // namespace mate
+
+namespace {
+
+atom::WebViewManager* GetWebViewManager(content::WebContents* web_contents) {
+  auto context = web_contents->GetBrowserContext();
+  if (context) {
+    auto manager = context->GetGuestManager();
+    return static_cast<atom::WebViewManager*>(manager);
+  } else {
+    return nullptr;
+  }
+}
+
+void AddGuest(int guest_instance_id,
+              int element_instance_id,
+              content::WebContents* embedder,
+              content::WebContents* guest_web_contents,
+              const base::DictionaryValue& options) {
+  auto manager = GetWebViewManager(embedder);
+  if (manager)
+    manager->AddGuest(guest_instance_id, element_instance_id, embedder,
+                      guest_web_contents);
+
+  WebContentsPreferences::FromWebContents(guest_web_contents)->Merge(options);
+}
+
+void RemoveGuest(content::WebContents* embedder, int guest_instance_id) {
+  auto manager = GetWebViewManager(embedder);
+  if (manager)
+    manager->RemoveGuest(guest_instance_id);
+}
+
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
+  mate::Dictionary dict(context->GetIsolate(), exports);
+  dict.SetMethod("addGuest", &AddGuest);
+  dict.SetMethod("removeGuest", &RemoveGuest);
+}
+
+}  // namespace
+
+NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_browser_web_view_manager, Initialize)
--- a/atom/browser/api/atom_api_window.cc
+++ b/atom/browser/api/atom_api_window.cc
@@ -3,43 +3,48 @@
 // found in the LICENSE file.

 #include "atom/browser/api/atom_api_window.h"
+#include "atom/common/native_mate_converters/value_converter.h"

+#include "atom/browser/api/atom_api_menu.h"
 #include "atom/browser/api/atom_api_web_contents.h"
 #include "atom/browser/browser.h"
 #include "atom/browser/native_window.h"
+#include "atom/common/native_mate_converters/callback.h"
 #include "atom/common/native_mate_converters/gfx_converter.h"
+#include "atom/common/native_mate_converters/gurl_converter.h"
+#include "atom/common/native_mate_converters/image_converter.h"
+#include "atom/common/native_mate_converters/string16_converter.h"
+#include "atom/common/node_includes.h"
+#include "atom/common/options_switches.h"
 #include "content/public/browser/render_process_host.h"
-#include "native_mate/callback.h"
 #include "native_mate/constructor.h"
 #include "native_mate/dictionary.h"
+#include "ui/gfx/geometry/rect.h"

-#include "atom/common/node_includes.h"
-
-namespace {
-
-struct PrintSettings {
-  bool silent;
-  bool print_backgournd;
-};
-
-}  // namespace
+#if defined(OS_WIN)
+#include "atom/browser/native_window_views.h"
+#include "atom/browser/ui/win/taskbar_host.h"
+#endif

+#if defined(OS_WIN)
 namespace mate {

 template<>
-struct Converter<PrintSettings> {
+struct Converter<atom::TaskbarHost::ThumbarButton> {
  static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val,
-                     PrintSettings* out) {
+                     atom::TaskbarHost::ThumbarButton* out) {
    mate::Dictionary dict;
    if (!ConvertFromV8(isolate, val, &dict))
      return false;
-    dict.Get("silent", &(out->silent));
-    dict.Get("printBackground", &(out->print_backgournd));
-    return true;
+    dict.Get("click", &(out->clicked_callback));
+    dict.Get("tooltip", &(out->tooltip));
+    dict.Get("flags", &out->flags);
+    return dict.Get("icon", &(out->icon));
  }
 };

 }  // namespace mate
+#endif

 namespace atom {

@@ -49,49 +54,115 @@ namespace {

 void OnCapturePageDone(
    v8::Isolate* isolate,
-    const base::Callback<void(v8::Handle<v8::Value>)>& callback,
-    const std::vector<unsigned char>& data) {
+    const base::Callback<void(const gfx::Image&)>& callback,
+    const SkBitmap& bitmap) {
  v8::Locker locker(isolate);
  v8::HandleScope handle_scope(isolate);
-
-  v8::Local<v8::Value> buffer = node::Buffer::New(
-      reinterpret_cast<const char*>(data.data()),
-      data.size());
-  callback.Run(buffer);
+  callback.Run(gfx::Image::CreateFrom1xBitmap(bitmap));
 }

+// Converts min-width to minWidth, returns false if no conversion is needed.
+bool TranslateOldKey(const std::string& key, std::string* new_key) {
+  if (key.find('-') == std::string::npos)
+    return false;
+  new_key->reserve(key.size());
+  bool next_upper_case = false;
+  for (char c : key) {
+    if (c == '-') {
+      next_upper_case = true;
+    } else if (next_upper_case) {
+      new_key->push_back(base::ToUpperASCII(c));
+      next_upper_case = false;
+    } else {
+      new_key->push_back(c);
+    }
+  }
+  return true;
+}
+
+// Converts min-width to minWidth recursively in the dictionary.
+void TranslateOldOptions(v8::Isolate* isolate, v8::Local<v8::Object> options) {
+  auto context = isolate->GetCurrentContext();
+  auto maybe_keys = options->GetOwnPropertyNames(context);
+  if (maybe_keys.IsEmpty())
+    return;
+  std::vector<std::string> keys;
+  if (!mate::ConvertFromV8(isolate, maybe_keys.ToLocalChecked(), &keys))
+    return;
+  mate::Dictionary dict(isolate, options);
+  for (const auto& key : keys) {
+    v8::Local<v8::Value> value;
+    if (!dict.Get(key, &value))  // Shouldn't happen, but guard it anyway.
+      continue;
+    // Go recursively.
+    v8::Local<v8::Object> sub_options;
+    if (mate::ConvertFromV8(isolate, value, &sub_options))
+      TranslateOldOptions(isolate, sub_options);
+    // Translate key.
+    std::string new_key;
+    if (TranslateOldKey(key, &new_key)) {
+      dict.Set(new_key, value);
+      dict.Delete(key);
+    }
+  }
+}
+
+#if defined(OS_WIN)
+// Converts binary data to Buffer.
+v8::Local<v8::Value> ToBuffer(v8::Isolate* isolate, void* val, int size) {
+  auto buffer = node::Buffer::New(isolate, static_cast<char*>(val), size);
+  if (buffer.IsEmpty())
+    return v8::Null(isolate);
+  else
+    return buffer.ToLocalChecked();
+}
+#endif
+
 }  // namespace


-Window::Window(const mate::Dictionary& options)
-    : window_(NativeWindow::Create(options)) {
+Window::Window(v8::Isolate* isolate, const mate::Dictionary& options) {
+  // Be compatible with old style field names like min-width.
+  TranslateOldOptions(isolate, options.GetHandle());
+
+  // Use options.webPreferences to create WebContents.
+  mate::Dictionary web_preferences = mate::Dictionary::CreateEmpty(isolate);
+  options.Get(options::kWebPreferences, &web_preferences);
+
+  // Be compatible with old options which are now in web_preferences.
+  v8::Local<v8::Value> value;
+  if (options.Get(options::kNodeIntegration, &value))
+    web_preferences.Set(options::kNodeIntegration, value);
+  if (options.Get(options::kPreloadScript, &value))
+    web_preferences.Set(options::kPreloadScript, value);
+  if (options.Get(options::kZoomFactor, &value))
+    web_preferences.Set(options::kZoomFactor, value);
+
+  // Creates the WebContents used by BrowserWindow.
+  auto web_contents = WebContents::Create(isolate, web_preferences);
+  web_contents_.Reset(isolate, web_contents.ToV8());
+  api_web_contents_ = web_contents.get();
+
+  // Keep a copy of the options for later use.
+  mate::Dictionary(isolate, web_contents->GetWrapper(isolate)).Set(
+      "browserWindowOptions", options);
+
+  // Creates BrowserWindow.
+  window_.reset(NativeWindow::Create(web_contents->managed_web_contents(),
+                                     options));
+  web_contents->SetOwnerWindow(window_.get());
  window_->InitFromOptions(options);
  window_->AddObserver(this);
+  AttachAsUserData(window_.get());
 }

 Window::~Window() {
-  if (window_)
-    Destroy();
+  if (!window_->IsClosed())
+    window_->CloseContents(nullptr);

-  Emit("destroyed");
-}
-
-void Window::OnPageTitleUpdated(bool* prevent_default,
-                                const std::string& title) {
-  base::ListValue args;
-  args.AppendString(title);
-  *prevent_default = Emit("page-title-updated", args);
-}
-
-void Window::WillCreatePopupWindow(const base::string16& frame_name,
-                                   const GURL& target_url,
-                                   const std::string& partition_id,
-                                   WindowOpenDisposition disposition) {
-  base::ListValue args;
-  args.AppendString(target_url.spec());
-  args.AppendString(frame_name);
-  args.AppendInteger(disposition);
-  Emit("-new-window", args);
+  // Destroy the native window in next tick because the native code might be
+  // iterating all windows.
+  base::MessageLoop::current()->DeleteSoon(FROM_HERE, window_.release());
 }

 void Window::WillCloseWindow(bool* prevent_default) {
@@ -99,9 +170,19 @@ void Window::WillCloseWindow(bool* prevent_default) {
 }

 void Window::OnWindowClosed() {
+  api_web_contents_->DestroyWebContents();
+
+  RemoveFromWeakMap();
+  window_->RemoveObserver(this);
+
+  // We can not call Destroy here because we need to call Emit first, but we
+  // also do not want any method to be used, so just mark as destroyed here.
+  MarkDestroyed();
+
  Emit("closed");

-  window_->RemoveObserver(this);
+  // Destroy the native class when window is closed.
+  base::MessageLoop::current()->PostTask(FROM_HERE, GetDestroyClosure());
 }

 void Window::OnWindowBlur() {
@@ -112,6 +193,50 @@ void Window::OnWindowFocus() {
  Emit("focus");
 }

+void Window::OnWindowMaximize() {
+  Emit("maximize");
+}
+
+void Window::OnWindowUnmaximize() {
+  Emit("unmaximize");
+}
+
+void Window::OnWindowMinimize() {
+  Emit("minimize");
+}
+
+void Window::OnWindowRestore() {
+  Emit("restore");
+}
+
+void Window::OnWindowResize() {
+  Emit("resize");
+}
+
+void Window::OnWindowMove() {
+  Emit("move");
+}
+
+void Window::OnWindowMoved() {
+  Emit("moved");
+}
+
+void Window::OnWindowEnterFullScreen() {
+  Emit("enter-full-screen");
+}
+
+void Window::OnWindowLeaveFullScreen() {
+  Emit("leave-full-screen");
+}
+
+void Window::OnWindowEnterHtmlFullScreen() {
+  Emit("enter-html-full-screen");
+}
+
+void Window::OnWindowLeaveHtmlFullScreen() {
+  Emit("leave-html-full-screen");
+}
+
 void Window::OnRendererUnresponsive() {
  Emit("unresponsive");
 }
@@ -120,31 +245,45 @@ void Window::OnRendererResponsive() {
  Emit("responsive");
 }

-// static
-mate::Wrappable* Window::New(v8::Isolate* isolate,
-                             const mate::Dictionary& options) {
-  if (Browser::Get()->is_ready()) {
-    return new Window(options);
-  } else {
-    isolate->ThrowException(v8::Exception::TypeError(mate::StringToV8(
-        isolate, "Can not create BrowserWindow before app is ready")));
-    return nullptr;
-  }
+void Window::OnExecuteWindowsCommand(const std::string& command_name) {
+  Emit("app-command", command_name);
 }

-void Window::Destroy() {
-  window_->DestroyWebContents();
-  window_->CloseImmediately();
+#if defined(OS_WIN)
+void Window::OnWindowMessage(UINT message, WPARAM w_param, LPARAM l_param) {
+  if (IsWindowMessageHooked(message)) {
+    messages_callback_map_[message].Run(
+        ToBuffer(isolate(), static_cast<void*>(&w_param), sizeof(WPARAM)),
+        ToBuffer(isolate(), static_cast<void*>(&l_param), sizeof(LPARAM)));
+  }
+}
+#endif
+
+// static
+mate::Wrappable* Window::New(v8::Isolate* isolate, mate::Arguments* args) {
+  if (!Browser::Get()->is_ready()) {
+    isolate->ThrowException(v8::Exception::Error(mate::StringToV8(
+        isolate, "Cannot create BrowserWindow before app is ready")));
+    return nullptr;
+  }
+
+  if (args->Length() > 1) {
+    args->ThrowError();
+    return nullptr;
+  }
+
+  mate::Dictionary options;
+  if (!(args->Length() == 1 && args->GetNext(&options))) {
+    options = mate::Dictionary::CreateEmpty(isolate);
+  }
+
+  return new Window(isolate, options);
 }

 void Window::Close() {
  window_->Close();
 }

-bool Window::IsClosed() {
-  return window_->IsClosed();
-}
-
 void Window::Focus() {
  window_->Focus(true);
 }
@@ -193,14 +332,22 @@ bool Window::IsMinimized() {
  return window_->IsMinimized();
 }

-void Window::SetFullscreen(bool fullscreen) {
-  window_->SetFullscreen(fullscreen);
+void Window::SetFullScreen(bool fullscreen) {
+  window_->SetFullScreen(fullscreen);
 }

 bool Window::IsFullscreen() {
  return window_->IsFullscreen();
 }

+void Window::SetBounds(const gfx::Rect& bounds) {
+  window_->SetBounds(bounds);
+}
+
+gfx::Rect Window::GetBounds() {
+  return window_->GetBounds();
+}
+
 void Window::SetSize(int width, int height) {
  window_->SetSize(gfx::Size(width, height));
 }
@@ -305,20 +452,8 @@ bool Window::IsKiosk() {
  return window_->IsKiosk();
 }

-void Window::OpenDevTools() {
-  window_->OpenDevTools();
-}
-
-void Window::CloseDevTools() {
-  window_->CloseDevTools();
-}
-
-bool Window::IsDevToolsOpened() {
-  return window_->IsDevToolsOpened();
-}
-
-void Window::InspectElement(int x, int y) {
-  window_->InspectElement(x, y);
+void Window::SetBackgroundColor(const std::string& color_name) {
+  window_->SetBackgroundColor(color_name);
 }

 void Window::FocusOnWebView() {
@@ -333,6 +468,10 @@ bool Window::IsWebViewFocused() {
  return window_->IsWebViewFocused();
 }

+bool Window::IsDevToolsFocused() {
+  return window_->IsDevToolsFocused();
+}
+
 void Window::SetRepresentedFilename(const std::string& filename) {
  window_->SetRepresentedFilename(filename);
 }
@@ -351,7 +490,7 @@ bool Window::IsDocumentEdited() {

 void Window::CapturePage(mate::Arguments* args) {
  gfx::Rect rect;
-  base::Callback<void(v8::Handle<v8::Value>)> callback;
+  base::Callback<void(const gfx::Image&)> callback;

  if (!(args->Length() == 1 && args->GetNext(&callback)) &&
      !(args->Length() == 2 && args->GetNext(&rect)
@@ -364,20 +503,46 @@ void Window::CapturePage(mate::Arguments* args) {
      rect, base::Bind(&OnCapturePageDone, args->isolate(), callback));
 }

-void Window::Print(mate::Arguments* args) {
-  PrintSettings settings = { false, false };;
-  if (args->Length() == 1 && !args->GetNext(&settings)) {
-    args->ThrowError();
-    return;
-  }
-
-  window_->Print(settings.silent, settings.print_backgournd);
-}
-
 void Window::SetProgressBar(double progress) {
  window_->SetProgressBar(progress);
 }

+void Window::SetOverlayIcon(const gfx::Image& overlay,
+                            const std::string& description) {
+  window_->SetOverlayIcon(overlay, description);
+}
+
+bool Window::SetThumbarButtons(mate::Arguments* args) {
+#if defined(OS_WIN)
+  std::vector<TaskbarHost::ThumbarButton> buttons;
+  if (!args->GetNext(&buttons)) {
+    args->ThrowError();
+    return false;
+  }
+  auto window = static_cast<NativeWindowViews*>(window_.get());
+  return window->taskbar_host().SetThumbarButtons(
+      window->GetAcceleratedWidget(), buttons);
+#else
+  return false;
+#endif
+}
+
+void Window::SetMenu(v8::Isolate* isolate, v8::Local<v8::Value> value) {
+  mate::Handle<Menu> menu;
+  if (value->IsObject() &&
+      mate::V8ToString(value->ToObject()->GetConstructorName()) == "Menu" &&
+      mate::ConvertFromV8(isolate, value, &menu)) {
+    menu_.Reset(isolate, menu.ToV8());
+    window_->SetMenu(menu->model());
+  } else if (value->IsNull()) {
+    menu_.Reset();
+    window_->SetMenu(nullptr);
+  } else {
+    isolate->ThrowException(v8::Exception::TypeError(
+        mate::StringToV8(isolate, "Invalid Menu")));
+  }
+}
+
 void Window::SetAutoHideMenuBar(bool auto_hide) {
  window_->SetAutoHideMenuBar(auto_hide);
 }
@@ -394,22 +559,66 @@ bool Window::IsMenuBarVisible() {
  return window_->IsMenuBarVisible();
 }

-mate::Handle<WebContents> Window::GetWebContents(v8::Isolate* isolate) const {
-  return WebContents::CreateFrom(isolate, window_->GetWebContents());
+#if defined(OS_WIN)
+bool Window::HookWindowMessage(UINT message,
+                               const MessageCallback& callback) {
+  messages_callback_map_[message] = callback;
+  return true;
 }

-mate::Handle<WebContents> Window::GetDevToolsWebContents(
-    v8::Isolate* isolate) const {
-  return WebContents::CreateFrom(isolate, window_->GetDevToolsWebContents());
+void Window::UnhookWindowMessage(UINT message) {
+  if (!ContainsKey(messages_callback_map_, message))
+    return;
+
+  messages_callback_map_.erase(message);
+}
+
+bool Window::IsWindowMessageHooked(UINT message) {
+  return ContainsKey(messages_callback_map_, message);
+}
+
+void Window::UnhookAllWindowMessages() {
+  messages_callback_map_.clear();
+}
+#endif
+
+#if defined(OS_MACOSX)
+void Window::ShowDefinitionForSelection() {
+  window_->ShowDefinitionForSelection();
+}
+#endif
+
+void Window::SetAspectRatio(double aspect_ratio, mate::Arguments* args) {
+  gfx::Size extra_size;
+  args->GetNext(&extra_size);
+  window_->SetAspectRatio(aspect_ratio, extra_size);
+}
+
+void Window::SetVisibleOnAllWorkspaces(bool visible) {
+  return window_->SetVisibleOnAllWorkspaces(visible);
+}
+
+bool Window::IsVisibleOnAllWorkspaces() {
+  return window_->IsVisibleOnAllWorkspaces();
+}
+
+int32_t Window::ID() const {
+  return weak_map_id();
+}
+
+v8::Local<v8::Value> Window::WebContents(v8::Isolate* isolate) {
+  if (web_contents_.IsEmpty())
+    return v8::Null(isolate);
+  else
+    return v8::Local<v8::Value>::New(isolate, web_contents_);
 }

 // static
 void Window::BuildPrototype(v8::Isolate* isolate,
-                            v8::Handle<v8::ObjectTemplate> prototype) {
+                            v8::Local<v8::ObjectTemplate> prototype) {
  mate::ObjectTemplateBuilder(isolate, prototype)
-      .SetMethod("destroy", &Window::Destroy)
+      .MakeDestroyable()
      .SetMethod("close", &Window::Close)
-      .SetMethod("isClosed", &Window::IsClosed)
      .SetMethod("focus", &Window::Focus)
      .SetMethod("isFocused", &Window::IsFocused)
      .SetMethod("show", &Window::Show)
@@ -422,8 +631,11 @@ void Window::BuildPrototype(v8::Isolate* isolate,
      .SetMethod("minimize", &Window::Minimize)
      .SetMethod("restore", &Window::Restore)
      .SetMethod("isMinimized", &Window::IsMinimized)
-      .SetMethod("setFullScreen", &Window::SetFullscreen)
+      .SetMethod("setFullScreen", &Window::SetFullScreen)
      .SetMethod("isFullScreen", &Window::IsFullscreen)
+      .SetMethod("setAspectRatio", &Window::SetAspectRatio)
+      .SetMethod("getBounds", &Window::GetBounds)
+      .SetMethod("setBounds", &Window::SetBounds)
      .SetMethod("getSize", &Window::GetSize)
      .SetMethod("setSize", &Window::SetSize)
      .SetMethod("getContentSize", &Window::GetContentSize)
@@ -445,26 +657,50 @@ void Window::BuildPrototype(v8::Isolate* isolate,
      .SetMethod("setSkipTaskbar", &Window::SetSkipTaskbar)
      .SetMethod("setKiosk", &Window::SetKiosk)
      .SetMethod("isKiosk", &Window::IsKiosk)
+      .SetMethod("setBackgroundColor", &Window::SetBackgroundColor)
      .SetMethod("setRepresentedFilename", &Window::SetRepresentedFilename)
      .SetMethod("getRepresentedFilename", &Window::GetRepresentedFilename)
      .SetMethod("setDocumentEdited", &Window::SetDocumentEdited)
      .SetMethod("isDocumentEdited", &Window::IsDocumentEdited)
-      .SetMethod("_openDevTools", &Window::OpenDevTools)
-      .SetMethod("closeDevTools", &Window::CloseDevTools)
-      .SetMethod("isDevToolsOpened", &Window::IsDevToolsOpened)
-      .SetMethod("inspectElement", &Window::InspectElement)
      .SetMethod("focusOnWebView", &Window::FocusOnWebView)
      .SetMethod("blurWebView", &Window::BlurWebView)
      .SetMethod("isWebViewFocused", &Window::IsWebViewFocused)
+      .SetMethod("isDevToolsFocused", &Window::IsDevToolsFocused)
      .SetMethod("capturePage", &Window::CapturePage)
-      .SetMethod("print", &Window::Print)
      .SetMethod("setProgressBar", &Window::SetProgressBar)
+      .SetMethod("setOverlayIcon", &Window::SetOverlayIcon)
+      .SetMethod("setThumbarButtons", &Window::SetThumbarButtons)
+      .SetMethod("setMenu", &Window::SetMenu)
      .SetMethod("setAutoHideMenuBar", &Window::SetAutoHideMenuBar)
      .SetMethod("isMenuBarAutoHide", &Window::IsMenuBarAutoHide)
      .SetMethod("setMenuBarVisibility", &Window::SetMenuBarVisibility)
      .SetMethod("isMenuBarVisible", &Window::IsMenuBarVisible)
-      .SetMethod("_getWebContents", &Window::GetWebContents)
-      .SetMethod("_getDevToolsWebContents", &Window::GetDevToolsWebContents);
+      .SetMethod("setVisibleOnAllWorkspaces",
+                 &Window::SetVisibleOnAllWorkspaces)
+      .SetMethod("isVisibleOnAllWorkspaces",
+                 &Window::IsVisibleOnAllWorkspaces)
+#if defined(OS_WIN)
+      .SetMethod("hookWindowMessage", &Window::HookWindowMessage)
+      .SetMethod("isWindowMessageHooked", &Window::IsWindowMessageHooked)
+      .SetMethod("unhookWindowMessage", &Window::UnhookWindowMessage)
+      .SetMethod("unhookAllWindowMessages", &Window::UnhookAllWindowMessages)
+#endif
+#if defined(OS_MACOSX)
+      .SetMethod("showDefinitionForSelection",
+                 &Window::ShowDefinitionForSelection)
+#endif
+      .SetProperty("id", &Window::ID)
+      .SetProperty("webContents", &Window::WebContents);
+}
+
+// static
+v8::Local<v8::Value> Window::From(v8::Isolate* isolate,
+                                  NativeWindow* native_window) {
+  auto existing = TrackableObject::FromWrappedClass(isolate, native_window);
+  if (existing)
+    return existing->GetWrapper(isolate);
+  else
+    return v8::Null(isolate);
 }

 }  // namespace api
@@ -474,14 +710,21 @@ void Window::BuildPrototype(v8::Isolate* isolate,

 namespace {

-void Initialize(v8::Handle<v8::Object> exports, v8::Handle<v8::Value> unused,
-                v8::Handle<v8::Context> context, void* priv) {
-  using atom::api::Window;
+using atom::api::Window;
+
+void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
+                v8::Local<v8::Context> context, void* priv) {
  v8::Isolate* isolate = context->GetIsolate();
  v8::Local<v8::Function> constructor = mate::CreateConstructor<Window>(
      isolate, "BrowserWindow", base::Bind(&Window::New));
+  mate::Dictionary browser_window(isolate, constructor);
+  browser_window.SetMethod("fromId",
+                           &mate::TrackableObject<Window>::FromWeakMapID);
+  browser_window.SetMethod("getAllWindows",
+                           &mate::TrackableObject<Window>::GetAll);
+
  mate::Dictionary dict(isolate, exports);
-  dict.Set("BrowserWindow", static_cast<v8::Handle<v8::Value>>(constructor));
+  dict.Set("BrowserWindow", browser_window);
 }

 }  // namespace
--- a/atom/browser/api/atom_api_window.h
+++ b/atom/browser/api/atom_api_window.h
@@ -5,16 +5,23 @@
 #ifndef ATOM_BROWSER_API_ATOM_API_WINDOW_H_
 #define ATOM_BROWSER_API_ATOM_API_WINDOW_H_

+#include <map>
 #include <string>
 #include <vector>

 #include "base/memory/scoped_ptr.h"
+#include "ui/gfx/image/image.h"
+#include "atom/browser/api/trackable_object.h"
+#include "atom/browser/native_window.h"
 #include "atom/browser/native_window_observer.h"
-#include "atom/browser/api/event_emitter.h"
 #include "native_mate/handle.h"

 class GURL;

+namespace gfx {
+class Rect;
+}
+
 namespace mate {
 class Arguments;
 class Dictionary;
@@ -28,40 +35,51 @@ namespace api {

 class WebContents;

-class Window : public mate::EventEmitter,
+class Window : public mate::TrackableObject<Window>,
               public NativeWindowObserver {
 public:
-  static mate::Wrappable* New(v8::Isolate* isolate,
-                              const mate::Dictionary& options);
+  static mate::Wrappable* New(v8::Isolate* isolate, mate::Arguments* args);

  static void BuildPrototype(v8::Isolate* isolate,
-                             v8::Handle<v8::ObjectTemplate> prototype);
+                             v8::Local<v8::ObjectTemplate> prototype);
+
+  // Returns the BrowserWindow object from |native_window|.
+  static v8::Local<v8::Value> From(v8::Isolate* isolate,
+                                   NativeWindow* native_window);

  NativeWindow* window() const { return window_.get(); }

 protected:
-  explicit Window(const mate::Dictionary& options);
+  Window(v8::Isolate* isolate, const mate::Dictionary& options);
  virtual ~Window();

-  // Implementations of NativeWindowObserver:
-  void OnPageTitleUpdated(bool* prevent_default,
-                          const std::string& title) override;
-  void WillCreatePopupWindow(const base::string16& frame_name,
-                             const GURL& target_url,
-                             const std::string& partition_id,
-                             WindowOpenDisposition disposition) override;
+  // NativeWindowObserver:
  void WillCloseWindow(bool* prevent_default) override;
  void OnWindowClosed() override;
  void OnWindowBlur() override;
  void OnWindowFocus() override;
+  void OnWindowMaximize() override;
+  void OnWindowUnmaximize() override;
+  void OnWindowMinimize() override;
+  void OnWindowRestore() override;
+  void OnWindowResize() override;
+  void OnWindowMove() override;
+  void OnWindowMoved() override;
+  void OnWindowEnterFullScreen() override;
+  void OnWindowLeaveFullScreen() override;
+  void OnWindowEnterHtmlFullScreen() override;
+  void OnWindowLeaveHtmlFullScreen() override;
  void OnRendererUnresponsive() override;
  void OnRendererResponsive() override;
+  void OnExecuteWindowsCommand(const std::string& command_name) override;
+
+  #if defined(OS_WIN)
+  void OnWindowMessage(UINT message, WPARAM w_param, LPARAM l_param) override;
+  #endif

 private:
  // APIs for NativeWindow.
-  void Destroy();
  void Close();
-  bool IsClosed();
  void Focus();
  bool IsFocused();
  void Show();
@@ -74,8 +92,10 @@ class Window : public mate::EventEmitter,
  void Minimize();
  void Restore();
  bool IsMinimized();
-  void SetFullscreen(bool fullscreen);
+  void SetFullScreen(bool fullscreen);
  bool IsFullscreen();
+  void SetBounds(const gfx::Rect& bounds);
+  gfx::Rect GetBounds();
  void SetSize(int width, int height);
  std::vector<int> GetSize();
  void SetContentSize(int width, int height);
@@ -97,28 +117,56 @@ class Window : public mate::EventEmitter,
  void SetSkipTaskbar(bool skip);
  void SetKiosk(bool kiosk);
  bool IsKiosk();
-  void OpenDevTools();
-  void CloseDevTools();
-  bool IsDevToolsOpened();
-  void InspectElement(int x, int y);
+  void SetBackgroundColor(const std::string& color_name);
  void FocusOnWebView();
  void BlurWebView();
  bool IsWebViewFocused();
+  bool IsDevToolsFocused();
  void SetRepresentedFilename(const std::string& filename);
  std::string GetRepresentedFilename();
  void SetDocumentEdited(bool edited);
  bool IsDocumentEdited();
  void CapturePage(mate::Arguments* args);
-  void Print(mate::Arguments* args);
  void SetProgressBar(double progress);
+  void SetOverlayIcon(const gfx::Image& overlay,
+                      const std::string& description);
+  bool SetThumbarButtons(mate::Arguments* args);
+  void SetMenu(v8::Isolate* isolate, v8::Local<v8::Value> menu);
  void SetAutoHideMenuBar(bool auto_hide);
  bool IsMenuBarAutoHide();
  void SetMenuBarVisibility(bool visible);
  bool IsMenuBarVisible();
+  void SetAspectRatio(double aspect_ratio, mate::Arguments* args);

-  // APIs for WebContents.
-  mate::Handle<WebContents> GetWebContents(v8::Isolate* isolate) const;
-  mate::Handle<WebContents> GetDevToolsWebContents(v8::Isolate* isolate) const;
+#if defined(OS_WIN)
+  typedef base::Callback<void(v8::Local<v8::Value>,
+                              v8::Local<v8::Value>)> MessageCallback;
+
+  bool HookWindowMessage(UINT message, const MessageCallback& callback);
+  bool IsWindowMessageHooked(UINT message);
+  void UnhookWindowMessage(UINT message);
+  void UnhookAllWindowMessages();
+#endif
+
+#if defined(OS_MACOSX)
+  void ShowDefinitionForSelection();
+#endif
+
+  void SetVisibleOnAllWorkspaces(bool visible);
+  bool IsVisibleOnAllWorkspaces();
+
+  int32_t ID() const;
+  v8::Local<v8::Value> WebContents(v8::Isolate* isolate);
+
+#if defined(OS_WIN)
+  typedef std::map<UINT, MessageCallback> MessageCallbackMap;
+  MessageCallbackMap messages_callback_map_;
+#endif
+
+  v8::Global<v8::Value> web_contents_;
+  v8::Global<v8::Value> menu_;
+
+  api::WebContents* api_web_contents_;

  scoped_ptr<NativeWindow> window_;

@@ -134,7 +182,7 @@ namespace mate {

 template<>
 struct Converter<atom::NativeWindow*> {
-  static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val,
+  static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
                     atom::NativeWindow** out) {
    // null would be tranfered to NULL.
    if (val->IsNull()) {
--- a/atom/browser/api/event.h
+++ b/atom/browser/api/event.h
@@ -34,10 +34,10 @@ class Event : public Wrappable,
  virtual ~Event();

  // Wrappable implementations:
-  virtual ObjectTemplateBuilder GetObjectTemplateBuilder(v8::Isolate* isolate);
+  ObjectTemplateBuilder GetObjectTemplateBuilder(v8::Isolate* isolate) override;

  // content::WebContentsObserver implementations:
-  virtual void WebContentsDestroyed() OVERRIDE;
+  void WebContentsDestroyed() override;

 private:
  // Replyer for the synchronous messages.
--- a/atom/browser/api/event_emitter.cc
+++ b/atom/browser/api/event_emitter.cc
@@ -5,14 +5,10 @@
 #include "atom/browser/api/event_emitter.h"

 #include "atom/browser/api/event.h"
-#include "atom/common/native_mate_converters/v8_value_converter.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/values.h"
 #include "native_mate/arguments.h"
+#include "native_mate/dictionary.h"
 #include "native_mate/object_template_builder.h"

-#include "atom/common/node_includes.h"
-
 namespace mate {

 namespace {
@@ -20,8 +16,8 @@ namespace {
 v8::Persistent<v8::ObjectTemplate> event_template;

 void PreventDefault(mate::Arguments* args) {
-  args->GetThis()->Set(StringToV8(args->isolate(), "defaultPrevented"),
-                       v8::True(args->isolate()));
+  mate::Dictionary self(args->isolate(), args->GetThis());
+  self.Set("defaultPrevented", true);
 }

 // Create a pure JavaScript Event object.
@@ -41,63 +37,28 @@ v8::Local<v8::Object> CreateEventObject(v8::Isolate* isolate) {
 EventEmitter::EventEmitter() {
 }

-bool EventEmitter::Emit(const base::StringPiece& name) {
-  return Emit(name, base::ListValue());
-}
-
-bool EventEmitter::Emit(const base::StringPiece& name,
-                        const base::ListValue& args) {
-  return Emit(name, args, NULL, NULL);
-}
-
-bool EventEmitter::Emit(const base::StringPiece& name,
-                        const base::ListValue& args,
-                        content::WebContents* sender,
-                        IPC::Message* message) {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::Locker locker(isolate);
-  v8::HandleScope handle_scope(isolate);
-
-  v8::Handle<v8::Context> context = isolate->GetCurrentContext();
-  scoped_ptr<atom::V8ValueConverter> converter(new atom::V8ValueConverter);
-
-  // v8_args = [args...];
-  Arguments v8_args;
-  v8_args.reserve(args.GetSize());
-  for (size_t i = 0; i < args.GetSize(); i++) {
-    const base::Value* value(NULL);
-    if (args.Get(i, &value))
-      v8_args.push_back(converter->ToV8Value(value, context));
-  }
-
-  return Emit(isolate, name, v8_args, sender, message);
-}
-
-bool EventEmitter::Emit(v8::Isolate* isolate,
-                        const base::StringPiece& name,
-                        Arguments args,
-                        content::WebContents* sender,
-                        IPC::Message* message) {
-  v8::Handle<v8::Object> event;
+v8::Local<v8::Object> EventEmitter::CreateJSEvent(
+    v8::Isolate* isolate, content::WebContents* sender, IPC::Message* message) {
+  v8::Local<v8::Object> event;
  bool use_native_event = sender && message;

  if (use_native_event) {
    mate::Handle<mate::Event> native_event = mate::Event::Create(isolate);
    native_event->SetSenderAndMessage(sender, message);
-    event = v8::Handle<v8::Object>::Cast(native_event.ToV8());
+    event = v8::Local<v8::Object>::Cast(native_event.ToV8());
  } else {
    event = CreateEventObject(isolate);
  }
+  mate::Dictionary(isolate, event).Set("sender", GetWrapper(isolate));
+  return event;
+}

-  // args = [name, event, args...];
-  args.insert(args.begin(), event);
-  args.insert(args.begin(), mate::StringToV8(isolate, name));
-
-  // this.emit.apply(this, args);
-  node::MakeCallback(isolate, GetWrapper(isolate), "emit", args.size(),
-                     &args[0]);
-
-  return event->Get(StringToV8(isolate, "defaultPrevented"))->BooleanValue();
+v8::Local<v8::Object> EventEmitter::CreateCustomEvent(
+    v8::Isolate* isolate, v8::Local<v8::Object> custom_event) {
+  v8::Local<v8::Object> event = CreateEventObject(isolate);
+  (void)event->SetPrototype(custom_event->CreationContext(), custom_event);
+  mate::Dictionary(isolate, event).Set("sender", GetWrapper(isolate));
+  return event;
 }

 }  // namespace mate
--- a/atom/browser/api/event_emitter.h
+++ b/atom/browser/api/event_emitter.h
@@ -7,12 +7,9 @@

 #include <vector>

+#include "atom/common/api/event_emitter_caller.h"
 #include "native_mate/wrappable.h"

-namespace base {
-class ListValue;
-}
-
 namespace content {
 class WebContents;
 }
@@ -26,29 +23,56 @@ namespace mate {
 // Provide helperers to emit event in JavaScript.
 class EventEmitter : public Wrappable {
 public:
-  typedef std::vector<v8::Handle<v8::Value>> Arguments;
+  typedef std::vector<v8::Local<v8::Value>> ValueArray;
+
+  // this.emit(name, event, args...);
+  template<typename... Args>
+  bool EmitCustomEvent(const base::StringPiece& name,
+                       v8::Local<v8::Object> event,
+                       const Args&... args) {
+    return EmitWithEvent(name, CreateCustomEvent(isolate(), event), args...);
+  }
+
+  // this.emit(name, new Event(), args...);
+  template<typename... Args>
+  bool Emit(const base::StringPiece& name, const Args&... args) {
+    return EmitWithSender(name, nullptr, nullptr, args...);
+  }
+
+  // this.emit(name, new Event(sender, message), args...);
+  template<typename... Args>
+  bool EmitWithSender(const base::StringPiece& name,
+                      content::WebContents* sender,
+                      IPC::Message* message,
+                      const Args&... args) {
+    v8::Locker locker(isolate());
+    v8::HandleScope handle_scope(isolate());
+    v8::Local<v8::Object> event = CreateJSEvent(isolate(), sender, message);
+    return EmitWithEvent(name, event, args...);
+  }

 protected:
  EventEmitter();

-  // this.emit(name, new Event());
-  bool Emit(const base::StringPiece& name);
-
-  // this.emit(name, new Event(), args...);
-  bool Emit(const base::StringPiece& name, const base::ListValue& args);
-
-  // this.emit(name, new Event(sender, message), args...);
-  bool Emit(const base::StringPiece& name, const base::ListValue& args,
-            content::WebContents* sender, IPC::Message* message);
-
-  // Lower level implementations.
-  bool Emit(v8::Isolate* isolate,
-            const base::StringPiece& name,
-            Arguments args,
-            content::WebContents* sender = nullptr,
-            IPC::Message* message = nullptr);
-
 private:
+  // this.emit(name, event, args...);
+  template<typename... Args>
+  bool EmitWithEvent(const base::StringPiece& name,
+                     v8::Local<v8::Object> event,
+                     const Args&... args) {
+    v8::Locker locker(isolate());
+    v8::HandleScope handle_scope(isolate());
+    EmitEvent(isolate(), GetWrapper(isolate()), name, event, args...);
+    return event->Get(
+        StringToV8(isolate(), "defaultPrevented"))->BooleanValue();
+  }
+
+  v8::Local<v8::Object> CreateJSEvent(v8::Isolate* isolate,
+                                      content::WebContents* sender,
+                                      IPC::Message* message);
+  v8::Local<v8::Object> CreateCustomEvent(
+      v8::Isolate* isolate, v8::Local<v8::Object> event);
+
  DISALLOW_COPY_AND_ASSIGN(EventEmitter);
 };

--- a/atom/browser/api/frame_subscriber.cc
+++ b/atom/browser/api/frame_subscriber.cc
@@ -0,0 +1,67 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/frame_subscriber.h"
+
+#include "atom/common/node_includes.h"
+#include "base/bind.h"
+#include "media/base/video_frame.h"
+#include "media/base/yuv_convert.h"
+
+namespace atom {
+
+namespace api {
+
+FrameSubscriber::FrameSubscriber(v8::Isolate* isolate,
+                                 const gfx::Size& size,
+                                 const FrameCaptureCallback& callback)
+    : isolate_(isolate), size_(size), callback_(callback) {
+}
+
+bool FrameSubscriber::ShouldCaptureFrame(
+    const gfx::Rect& damage_rect,
+    base::TimeTicks present_time,
+    scoped_refptr<media::VideoFrame>* storage,
+    DeliverFrameCallback* callback) {
+  *storage = media::VideoFrame::CreateFrame(media::VideoFrame::YV12, size_,
+                                            gfx::Rect(size_), size_,
+                                            base::TimeDelta());
+  *callback = base::Bind(&FrameSubscriber::OnFrameDelivered,
+                         base::Unretained(this),
+                         *storage);
+  return true;
+}
+
+void FrameSubscriber::OnFrameDelivered(
+    scoped_refptr<media::VideoFrame> frame, base::TimeTicks, bool result) {
+  if (!result)
+    return;
+
+  v8::Locker locker(isolate_);
+  v8::HandleScope handle_scope(isolate_);
+
+  gfx::Rect rect = frame->visible_rect();
+  size_t rgb_arr_size = rect.width() * rect.height() * 4;
+  v8::MaybeLocal<v8::Object> buffer = node::Buffer::New(isolate_, rgb_arr_size);
+  if (buffer.IsEmpty())
+    return;
+
+  // Convert a frame of YUV to 32 bit ARGB.
+  media::ConvertYUVToRGB32(frame->data(media::VideoFrame::kYPlane),
+                           frame->data(media::VideoFrame::kUPlane),
+                           frame->data(media::VideoFrame::kVPlane),
+                           reinterpret_cast<uint8*>(
+                              node::Buffer::Data(buffer.ToLocalChecked())),
+                           rect.width(), rect.height(),
+                           frame->stride(media::VideoFrame::kYPlane),
+                           frame->stride(media::VideoFrame::kUVPlane),
+                           rect.width() * 4,
+                           media::YV12);
+
+  callback_.Run(buffer.ToLocalChecked());
+}
+
+}  // namespace api
+
+}  // namespace atom
--- a/atom/browser/api/frame_subscriber.h
+++ b/atom/browser/api/frame_subscriber.h
@@ -0,0 +1,45 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_FRAME_SUBSCRIBER_H_
+#define ATOM_BROWSER_API_FRAME_SUBSCRIBER_H_
+
+#include "base/callback.h"
+#include "content/public/browser/render_widget_host_view_frame_subscriber.h"
+#include "ui/gfx/geometry/size.h"
+#include "v8/include/v8.h"
+
+namespace atom {
+
+namespace api {
+
+class FrameSubscriber : public content::RenderWidgetHostViewFrameSubscriber {
+ public:
+  using FrameCaptureCallback = base::Callback<void(v8::Local<v8::Value>)>;
+
+  FrameSubscriber(v8::Isolate* isolate,
+                  const gfx::Size& size,
+                  const FrameCaptureCallback& callback);
+
+  bool ShouldCaptureFrame(const gfx::Rect& damage_rect,
+                          base::TimeTicks present_time,
+                          scoped_refptr<media::VideoFrame>* storage,
+                          DeliverFrameCallback* callback) override;
+
+ private:
+  void OnFrameDelivered(
+      scoped_refptr<media::VideoFrame> frame, base::TimeTicks, bool);
+
+  v8::Isolate* isolate_;
+  gfx::Size size_;
+  FrameCaptureCallback callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(FrameSubscriber);
+};
+
+}  // namespace api
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_API_FRAME_SUBSCRIBER_H_
--- a/atom/browser/api/lib/app.coffee
+++ b/atom/browser/api/lib/app.coffee
@@ -1,18 +1,17 @@
-EventEmitter = require('events').EventEmitter
+{deprecate, session, Menu} = require 'electron'
+{EventEmitter} = require 'events'

 bindings = process.atomBinding 'app'
+downloadItemBindings = process.atomBinding 'download_item'

 app = bindings.app
 app.__proto__ = EventEmitter.prototype

-app.getHomeDir = ->
-  process.env[if process.platform is 'win32' then 'USERPROFILE' else 'HOME']
-
 app.setApplicationMenu = (menu) ->
-  require('menu').setApplicationMenu menu
+  Menu.setApplicationMenu menu

 app.getApplicationMenu = ->
-  require('menu').getApplicationMenu()
+  Menu.getApplicationMenu()

 app.commandLine =
  appendSwitch: bindings.appendSwitch,
@@ -28,10 +27,46 @@ if process.platform is 'darwin'
    show: bindings.dockShow
    setMenu: bindings.dockSetMenu

-# Be compatible with old API.
-app.once 'ready', -> app.emit 'finish-launching'
-app.terminate = app.quit
-app.exit = process.exit
+appPath = null
+app.setAppPath = (path) ->
+  appPath = path
+
+app.getAppPath = ->
+  appPath
+
+# Routes the events to webContents.
+for name in ['login', 'certificate-error', 'select-client-certificate']
+  do (name) ->
+    app.on name, (event, webContents, args...) ->
+      webContents.emit name, event, args...
+
+# Deprecated.
+app.getHomeDir = deprecate 'app.getHomeDir', 'app.getPath', ->
+  @getPath 'home'
+app.getDataPath = deprecate 'app.getDataPath', 'app.getPath', ->
+  @getPath 'userData'
+app.setDataPath = deprecate 'app.setDataPath', 'app.setPath', (path) ->
+  @setPath 'userData', path
+app.resolveProxy = deprecate 'app.resolveProxy', 'session.defaultSession.resolveProxy', (url, callback) ->
+  session.defaultSession.resolveProxy url, callback
+deprecate.rename app, 'terminate', 'quit'
+deprecate.event app, 'finish-launching', 'ready', ->
+  setImmediate => # give default app a chance to setup default menu.
+    @emit 'finish-launching'
+deprecate.event app, 'activate-with-no-open-windows', 'activate', (event, hasVisibleWindows) ->
+  @emit 'activate-with-no-open-windows', event if not hasVisibleWindows
+deprecate.event app, 'select-certificate', 'select-client-certificate'
+
+# Wrappers for native classes.
+wrapDownloadItem = (downloadItem) ->
+  # downloadItem is an EventEmitter.
+  downloadItem.__proto__ = EventEmitter.prototype
+  # Deprecated.
+  deprecate.property downloadItem, 'url', 'getURL'
+  deprecate.property downloadItem, 'filename', 'getFilename'
+  deprecate.property downloadItem, 'mimeType', 'getMimeType'
+  deprecate.rename downloadItem, 'getUrl', 'getURL'
+downloadItemBindings._setWrapDownloadItem wrapDownloadItem

 # Only one App object pemitted.
 module.exports = app
--- a/atom/browser/api/lib/atom-delegate.coffee
+++ b/atom/browser/api/lib/atom-delegate.coffee
@@ -1,6 +0,0 @@
-module.exports =
-  browserMainParts:
-    preMainMessageLoopRun: ->
-
-setImmediate ->
-  module.exports.browserMainParts.preMainMessageLoopRun()
--- a/atom/browser/api/lib/auto-updater.coffee
+++ b/atom/browser/api/lib/auto-updater.coffee
@@ -1,24 +1,12 @@
-autoUpdater = process.atomBinding('auto_updater').autoUpdater
-EventEmitter = require('events').EventEmitter
+{deprecate} = require 'electron'

-autoUpdater.__proto__ = EventEmitter.prototype
+autoUpdater =
+  if process.platform is 'win32'
+    require './auto-updater/auto-updater-win'
+  else
+    require './auto-updater/auto-updater-native'

-autoUpdater.on 'update-downloaded-raw', (args...) ->
-  args[3] = new Date(args[3])  # releaseDate
-  @emit 'update-downloaded', args..., => @quitAndInstall()
-
-autoUpdater.quitAndInstall = ->
-  # If we don't have any window then quitAndInstall immediately.
-  BrowserWindow = require 'browser-window'
-  windows = BrowserWindow.getAllWindows()
-  if windows.length is 0
-    @_quitAndInstall()
-    return
-
-  # Do the restart after all windows have been closed.
-  app = require 'app'
-  app.removeAllListeners 'window-all-closed'
-  app.once 'window-all-closed', @_quitAndInstall.bind(this)
-  win.close() for win in windows
+# Deprecated.
+deprecate.rename autoUpdater, 'setFeedUrl', 'setFeedURL'

 module.exports = autoUpdater
--- a/atom/browser/api/lib/auto-updater/auto-updater-native.coffee
+++ b/atom/browser/api/lib/auto-updater/auto-updater-native.coffee
@@ -0,0 +1,6 @@
+{EventEmitter} = require 'events'
+{autoUpdater} = process.atomBinding 'auto_updater'
+
+autoUpdater.__proto__ = EventEmitter.prototype
+
+module.exports = autoUpdater
--- a/atom/browser/api/lib/auto-updater/auto-updater-win.coffee
+++ b/atom/browser/api/lib/auto-updater/auto-updater-win.coffee
@@ -0,0 +1,42 @@
+{app} = require 'electron'
+{EventEmitter} = require 'events'
+url = require 'url'
+
+squirrelUpdate = require './squirrel-update-win'
+
+class AutoUpdater extends EventEmitter
+  quitAndInstall: ->
+    squirrelUpdate.processStart()
+    app.quit()
+
+  setFeedURL: (updateURL) ->
+    @updateURL = updateURL
+
+  checkForUpdates: ->
+    return @emitError 'Update URL is not set' unless @updateURL
+    return @emitError 'Can not find Squirrel' unless squirrelUpdate.supported()
+
+    @emit 'checking-for-update'
+
+    squirrelUpdate.download @updateURL, (error, update) =>
+      return @emitError error if error?
+      return @emit 'update-not-available' unless update?
+
+      @emit 'update-available'
+
+      squirrelUpdate.update @updateURL, (error) =>
+        return @emitError error if error?
+
+        {releaseNotes, version} = update
+        # Following information is not available on Windows, so fake them.
+        date = new Date
+        url = @updateURL
+
+        @emit 'update-downloaded', {}, releaseNotes, version, date, url, => @quitAndInstall()
+
+  # Private: Emit both error object and message, this is to keep compatibility
+  # with Old APIs.
+  emitError: (message) ->
+    @emit 'error', new Error(message), message
+
+module.exports = new AutoUpdater
--- a/atom/browser/api/lib/auto-updater/squirrel-update-win.coffee
+++ b/atom/browser/api/lib/auto-updater/squirrel-update-win.coffee
@@ -0,0 +1,67 @@
+fs      = require 'fs'
+path    = require 'path'
+{spawn} = require 'child_process'
+
+appFolder = path.dirname process.execPath # i.e. my-app/app-0.1.13/
+updateExe = path.resolve appFolder, '..', 'Update.exe' # i.e. my-app/Update.exe
+exeName   = path.basename process.execPath
+
+# Spawn a command and invoke the callback when it completes with an error
+# and the output from standard out.
+spawnUpdate = (args, detached, callback) ->
+  try
+    spawnedProcess = spawn updateExe, args, {detached}
+  catch error
+    # Shouldn't happen, but still guard it.
+    process.nextTick -> callback error
+    return
+
+  stdout = ''
+  stderr = ''
+  spawnedProcess.stdout.on 'data', (data) -> stdout += data
+  spawnedProcess.stderr.on 'data', (data) -> stderr += data
+
+  errorEmitted = false
+  spawnedProcess.on 'error', (error) ->
+    errorEmitted = true
+    callback error
+  spawnedProcess.on 'exit', (code, signal) ->
+    # We may have already emitted an error.
+    return if errorEmitted
+
+    # Process terminated with error.
+    if code isnt 0
+      return callback "Command failed: #{signal ? code}\n#{stderr}"
+
+    # Success.
+    callback null, stdout
+
+# Start an instance of the installed app.
+exports.processStart = (callback) ->
+  spawnUpdate ['--processStart', exeName], true, ->
+
+# Download the releases specified by the URL and write new results to stdout.
+exports.download = (updateURL, callback) ->
+  spawnUpdate ['--download', updateURL], false, (error, stdout) ->
+    return callback(error) if error?
+
+    try
+      # Last line of output is the JSON details about the releases
+      json = stdout.trim().split('\n').pop()
+      update = JSON.parse(json)?.releasesToApply?.pop?()
+    catch
+      return callback "Invalid result:\n#{stdout}"
+
+    callback null, update
+
+# Update the application to the latest remote version specified by URL.
+exports.update = (updateURL, callback) ->
+  spawnUpdate ['--update', updateURL], false, callback
+
+# Is the Update.exe installed with the current application?
+exports.supported = ->
+  try
+    fs.accessSync updateExe, fs.R_OK
+    return true
+  catch
+    return false
--- a/atom/browser/api/lib/browser-window.coffee
+++ b/atom/browser/api/lib/browser-window.coffee
@@ -1,72 +1,67 @@
-EventEmitter = require('events').EventEmitter
-IDWeakMap = require 'id-weak-map'
-app = require 'app'
-ipc = require 'ipc'
-wrapWebContents = require('web-contents').wrap
+{ipcMain, deprecate} = require 'electron'
+{EventEmitter} = require 'events'

-BrowserWindow = process.atomBinding('window').BrowserWindow
+{BrowserWindow} = process.atomBinding 'window'
 BrowserWindow::__proto__ = EventEmitter.prototype

-# Store all created windows in the weak map.
-BrowserWindow.windows = new IDWeakMap
-
 BrowserWindow::_init = ->
+  {app} = require 'electron'  # avoid recursive require.
+
  # Simulate the application menu on platforms other than OS X.
  if process.platform isnt 'darwin'
    menu = app.getApplicationMenu()
    @setMenu menu if menu?

-  @webContents = @getWebContents()
-  @webContents.once 'destroyed', => @webContents = null
-
-  # Remember the window ID.
-  Object.defineProperty this, 'id',
-    value: BrowserWindow.windows.add(this)
-    enumerable: true
-
  # Make new windows requested by links behave like "window.open"
-  @on '-new-window', (event, url, frameName) =>
-    event.sender = @webContents
+  @webContents.on '-new-window', (event, url, frameName) ->
    options = show: true, width: 800, height: 600
-    ipc.emit 'ATOM_SHELL_GUEST_WINDOW_MANAGER_WINDOW_OPEN', event, url, frameName, options
+    ipcMain.emit 'ATOM_SHELL_GUEST_WINDOW_MANAGER_WINDOW_OPEN', event, url, frameName, options

-  # Remove the window from weak map immediately when it's destroyed, since we
-  # could be iterating windows before GC happened.
-  @once 'closed', =>
-    BrowserWindow.windows.remove @id if BrowserWindow.windows.has @id
+  # window.resizeTo(...)
+  # window.moveTo(...)
+  @webContents.on 'move', (event, size) =>
+    @setBounds size

-BrowserWindow::openDevTools = ->
-  @_openDevTools()
+  # Hide the auto-hide menu when webContents is focused.
+  @webContents.on 'activate', =>
+    if process.platform isnt 'darwin' and @isMenuBarAutoHide() and @isMenuBarVisible()
+      @setMenuBarVisibility false

-  # Force devToolsWebContents to be created.
-  @devToolsWebContents = @getDevToolsWebContents()
-  @devToolsWebContents.once 'destroyed', => @devToolsWebContents = null
+  # Forward the crashed event.
+  @webContents.on 'crashed', =>
+    @emit 'crashed'

-  # Emit devtools events.
-  @devToolsWebContents.once 'did-finish-load', => @emit 'devtools-opened'
-  @devToolsWebContents.once 'destroyed', => @emit 'devtools-closed'
+  # Change window title to page title.
+  @webContents.on 'page-title-updated', (event, title, explicitSet) =>
+    @emit 'page-title-updated', event, title
+    @setTitle title unless event.defaultPrevented

-BrowserWindow::toggleDevTools = ->
-  if @isDevToolsOpened() then @closeDevTools() else @openDevTools()
+  # Sometimes the webContents doesn't get focus when window is shown, so we have
+  # to force focusing on webContents in this case. The safest way is to focus it
+  # when we first start to load URL, if we do it earlier it won't have effect,
+  # if we do it later we might move focus in the page.
+  # Though this hack is only needed on OS X when the app is launched from
+  # Finder, we still do it on all platforms in case of other bugs we don't know.
+  @webContents.once 'load-url', ->
+    @focus()

-BrowserWindow::getWebContents = ->
-  wrapWebContents @_getWebContents()
+  # Redirect focus/blur event to app instance too.
+  @on 'blur', (event) =>
+    app.emit 'browser-window-blur', event, this
+  @on 'focus', (event) =>
+    app.emit 'browser-window-focus', event, this

-BrowserWindow::getDevToolsWebContents = ->
-  wrapWebContents @_getDevToolsWebContents()
+  # Notify the creation of the window.
+  app.emit 'browser-window-created', {}, this

-BrowserWindow::setMenu = (menu) ->
-  if process.platform is 'darwin'
-    throw new Error('BrowserWindow.setMenu is not available on OS X')
-
-  throw new TypeError('Invalid menu') unless menu?.constructor?.name is 'Menu'
-
-  @menu = menu  # Keep a reference of menu in case of GC.
-  @menu.attachToWindow this
-
-BrowserWindow.getAllWindows = ->
-  windows = BrowserWindow.windows
-  windows.get key for key in windows.keys()
+  # Be compatible with old APIs.
+  @webContents.on 'devtools-focused', => @emit 'devtools-focused'
+  @webContents.on 'devtools-opened', => @emit 'devtools-opened'
+  @webContents.on 'devtools-closed', => @emit 'devtools-closed'
+  Object.defineProperty this, 'devToolsWebContents',
+    enumerable: true,
+    configurable: false,
+    get: -> @webContents.devToolsWebContents

 BrowserWindow.getFocusedWindow = ->
  windows = BrowserWindow.getAllWindows()
@@ -74,32 +69,44 @@ BrowserWindow.getFocusedWindow = ->

 BrowserWindow.fromWebContents = (webContents) ->
  windows = BrowserWindow.getAllWindows()
-  return window for window in windows when webContents.equal window.webContents
+  return window for window in windows when window.webContents?.equal webContents

 BrowserWindow.fromDevToolsWebContents = (webContents) ->
  windows = BrowserWindow.getAllWindows()
-  return window for window in windows when webContents.equal window.devToolsWebContents
-
-BrowserWindow.fromId = (id) ->
-  BrowserWindow.windows.get id
+  return window for window in windows when window.devToolsWebContents?.equal webContents

 # Helpers.
-BrowserWindow::loadUrl = -> @webContents.loadUrl.apply @webContents, arguments
-BrowserWindow::send = -> @webContents.send.apply @webContents, arguments
-
-# Be compatible with old API.
-BrowserWindow::restart = -> @webContents.reload()
-BrowserWindow::getUrl = -> @webContents.getUrl()
+BrowserWindow::loadURL = -> @webContents.loadURL.apply @webContents, arguments
+BrowserWindow::getURL = -> @webContents.getURL()
 BrowserWindow::reload = -> @webContents.reload.apply @webContents, arguments
-BrowserWindow::reloadIgnoringCache = -> @webContents.reloadIgnoringCache.apply @webContents, arguments
-BrowserWindow::getPageTitle = -> @webContents.getTitle()
-BrowserWindow::isLoading = -> @webContents.isLoading()
-BrowserWindow::isWaitingForResponse = -> @webContents.isWaitingForResponse()
-BrowserWindow::stop = -> @webContents.stop()
-BrowserWindow::getRoutingId = -> @webContents.getRoutingId()
-BrowserWindow::getProcessId = -> @webContents.getProcessId()
-BrowserWindow::isCrashed = -> @webContents.isCrashed()
-BrowserWindow::executeJavaScriptInDevTools = (code) ->
-  @devToolsWebContents.executeJavaScript code
+BrowserWindow::send = -> @webContents.send.apply @webContents, arguments
+BrowserWindow::openDevTools = -> @webContents.openDevTools.apply @webContents, arguments
+BrowserWindow::closeDevTools = -> @webContents.closeDevTools()
+BrowserWindow::isDevToolsOpened = -> @webContents.isDevToolsOpened()
+BrowserWindow::toggleDevTools = -> @webContents.toggleDevTools()
+BrowserWindow::inspectElement = -> @webContents.inspectElement.apply @webContents, arguments
+BrowserWindow::inspectServiceWorker = -> @webContents.inspectServiceWorker()
+
+# Deprecated.
+deprecate.member BrowserWindow, 'undo', 'webContents'
+deprecate.member BrowserWindow, 'redo', 'webContents'
+deprecate.member BrowserWindow, 'cut', 'webContents'
+deprecate.member BrowserWindow, 'copy', 'webContents'
+deprecate.member BrowserWindow, 'paste', 'webContents'
+deprecate.member BrowserWindow, 'selectAll', 'webContents'
+deprecate.member BrowserWindow, 'reloadIgnoringCache', 'webContents'
+deprecate.member BrowserWindow, 'isLoading', 'webContents'
+deprecate.member BrowserWindow, 'isWaitingForResponse', 'webContents'
+deprecate.member BrowserWindow, 'stop', 'webContents'
+deprecate.member BrowserWindow, 'isCrashed', 'webContents'
+deprecate.member BrowserWindow, 'print', 'webContents'
+deprecate.member BrowserWindow, 'printToPDF', 'webContents'
+deprecate.rename BrowserWindow, 'restart', 'reload'
+deprecate.rename BrowserWindow, 'loadUrl', 'loadURL'
+deprecate.rename BrowserWindow, 'getUrl', 'getURL'
+BrowserWindow::executeJavaScriptInDevTools = deprecate 'executeJavaScriptInDevTools', 'devToolsWebContents.executeJavaScript', (code) ->
+  @devToolsWebContents?.executeJavaScript code
+BrowserWindow::getPageTitle = deprecate 'getPageTitle', 'webContents.getTitle', ->
+  @webContents?.getTitle()

 module.exports = BrowserWindow
--- a/atom/browser/api/lib/content-tracing.coffee
+++ b/atom/browser/api/lib/content-tracing.coffee
@@ -1,7 +1 @@
 module.exports = process.atomBinding 'content_tracing'
-
-# Mirrored from content::TracingController::Options
-module.exports.DEFAULT_OPTIONS = 0
-module.exports.ENABLE_SYSTRACE = 1 << 0
-module.exports.ENABLE_SAMPLING = 1 << 1
-module.exports.RECORD_CONTINUOUSLY = 1 << 2
--- a/atom/browser/api/lib/dialog.coffee
+++ b/atom/browser/api/lib/dialog.coffee
@@ -1,7 +1,7 @@
+{app, BrowserWindow} = require 'electron'
+
 binding = process.atomBinding 'dialog'
 v8Util = process.atomBinding 'v8_util'
-app = require 'app'
-BrowserWindow = require 'browser-window'

 fileDialogProperties =
  openFile:        1 << 0
@@ -9,7 +9,10 @@ fileDialogProperties =
  multiSelections: 1 << 2
  createDirectory: 1 << 3

-messageBoxTypes = ['none', 'info', 'warning']
+messageBoxTypes = ['none', 'info', 'warning', 'error', 'question']
+
+messageBoxOptions =
+  noLink: 1 << 0

 parseArgs = (window, options, callback) ->
  unless window is null or window?.constructor is BrowserWindow
@@ -83,20 +86,34 @@ module.exports =

    options ?= type: 'none'
    options.type ?= 'none'
-    options.type = messageBoxTypes.indexOf options.type
-    throw new TypeError('Invalid message box type') unless options.type > -1
+    messageBoxType = messageBoxTypes.indexOf options.type
+    throw new TypeError('Invalid message box type') unless messageBoxType > -1

    throw new TypeError('Buttons need to be array') unless Array.isArray options.buttons

    options.title ?= ''
    options.message ?= ''
    options.detail ?= ''
+    options.icon ?= null

-    binding.showMessageBox options.type,
+    # Choose a default button to get selected when dialog is cancelled.
+    unless options.cancelId?
+      options.cancelId = 0
+      for text, i in options.buttons
+        if text.toLowerCase() in ['cancel', 'no']
+          options.cancelId = i
+          break
+
+    flags = if options.noLink then messageBoxOptions.noLink else 0
+
+    binding.showMessageBox messageBoxType,
                           options.buttons,
-                           String(options.title),
-                           String(options.message),
-                           String(options.detail),
+                           options.cancelId,
+                           flags,
+                           options.title,
+                           options.message,
+                           options.detail,
+                           options.icon,
                           window,
                           callback

@@ -104,4 +121,5 @@ module.exports =
    binding.showErrorBox args...

 # Mark standard asynchronous functions.
-v8Util.setHiddenValue f, 'asynchronous', true for k, f of module.exports
+for api in ['showMessageBox', 'showOpenDialog', 'showSaveDialog']
+  v8Util.setHiddenValue module.exports[api], 'asynchronous', true
--- a/atom/browser/api/lib/exports/electron.coffee
+++ b/atom/browser/api/lib/exports/electron.coffee
@@ -0,0 +1,55 @@
+# Import common modules.
+module.exports = require '../../../../common/api/lib/exports/electron'
+
+Object.defineProperties module.exports,
+  # Browser side modules, please sort with alphabet order.
+  app:
+    enumerable: true
+    get: -> require '../app'
+  autoUpdater:
+    enumerable: true
+    get: -> require '../auto-updater'
+  BrowserWindow:
+    enumerable: true
+    get: -> require '../browser-window'
+  contentTracing:
+    enumerable: true
+    get: -> require '../content-tracing'
+  dialog:
+    enumerable: true
+    get: -> require '../dialog'
+  ipcMain:
+    enumerable: true
+    get: -> require '../ipc-main'
+  globalShortcut:
+    enumerable: true
+    get: -> require '../global-shortcut'
+  Menu:
+    enumerable: true
+    get: -> require '../menu'
+  MenuItem:
+    enumerable: true
+    get: -> require '../menu-item'
+  powerMonitor:
+    enumerable: true
+    get: -> require '../power-monitor'
+  powerSaveBlocker:
+    enumerable: true
+    get: -> require '../power-save-blocker'
+  protocol:
+    enumerable: true
+    get: -> require '../protocol'
+  screen:
+    enumerable: true
+    get: -> require '../screen'
+  session:
+    enumerable: true
+    get: -> require '../session'
+  Tray:
+    enumerable: true
+    get: -> require '../tray'
+  # The internal modules, invisible unless you know their names.
+  NavigationController:
+    get: -> require '../navigation-controller'
+  webContents:
+    get: -> require '../web-contents'
--- a/atom/browser/api/lib/global-shortcut.coffee
+++ b/atom/browser/api/lib/global-shortcut.coffee
@@ -1,5 +1,3 @@
-bindings = process.atomBinding 'global_shortcut'
-
-globalShortcut = bindings.globalShortcut
+{globalShortcut} = process.atomBinding 'global_shortcut'

 module.exports = globalShortcut
--- a/atom/browser/api/lib/ipc-main.coffee
+++ b/atom/browser/api/lib/ipc-main.coffee
@@ -0,0 +1,3 @@
+{EventEmitter} = require 'events'
+
+module.exports = new EventEmitter
--- a/atom/browser/api/lib/ipc.coffee
+++ b/atom/browser/api/lib/ipc.coffee
@@ -1,3 +1,6 @@
-EventEmitter = require('events').EventEmitter
+{deprecate, ipcMain} = require 'electron'

-module.exports = new EventEmitter
+# This module is deprecated, we mirror everything from ipcMain.
+deprecate.warn 'ipc module', 'require("electron").ipcMain'
+
+module.exports = ipcMain
--- a/atom/browser/api/lib/menu-item.coffee
+++ b/atom/browser/api/lib/menu-item.coffee
@@ -1,21 +1,38 @@
-BrowserWindow = require 'browser-window'
 v8Util = process.atomBinding 'v8_util'

 nextCommandId = 0

+# Maps role to methods of webContents
+rolesMap =
+  undo: 'undo'
+  redo: 'redo'
+  cut: 'cut'
+  copy: 'copy'
+  paste: 'paste'
+  selectall: 'selectAll'
+  minimize: 'minimize'
+  close: 'close'
+
+# Maps methods that should be called directly on the BrowserWindow instance
+methodInBrowserWindow =
+  minimize: true
+  close: true
+
 class MenuItem
  @types = ['normal', 'separator', 'submenu', 'checkbox', 'radio']

  constructor: (options) ->
-    Menu = require 'menu'
+    {Menu} = require 'electron'

-    {click, @selector, @type, @label, @sublabel, @accelerator, @enabled, @visible, @checked, @submenu} = options
+    {click, @selector, @type, @role, @label, @sublabel, @accelerator, @icon, @enabled, @visible, @checked, @submenu} = options

    @type = 'submenu' if not @type? and @submenu?
    throw new Error('Invalid submenu') if @type is 'submenu' and @submenu?.constructor isnt Menu

    @overrideReadOnlyProperty 'type', 'normal'
+    @overrideReadOnlyProperty 'role'
    @overrideReadOnlyProperty 'accelerator'
+    @overrideReadOnlyProperty 'icon'
    @overrideReadOnlyProperty 'submenu'
    @overrideProperty 'label', ''
    @overrideProperty 'sublabel', ''
@@ -26,12 +43,18 @@ class MenuItem
    throw new Error("Unknown menu type #{@type}") if MenuItem.types.indexOf(@type) is -1

    @commandId = ++nextCommandId
-    @click = =>
+    @click = (focusedWindow) =>
      # Manually flip the checked flags when clicked.
      @checked = !@checked if @type in ['checkbox', 'radio']

-      if typeof click is 'function'
-        click this, BrowserWindow.getFocusedWindow()
+      if @role and rolesMap[@role] and process.platform isnt 'darwin' and focusedWindow?
+        methodName = rolesMap[@role]
+        if methodInBrowserWindow[methodName]
+          focusedWindow[methodName]()
+        else
+          focusedWindow.webContents?[methodName]()
+      else if typeof click is 'function'
+        click this, focusedWindow
      else if typeof @selector is 'string'
        Menu.sendActionToFirstResponder @selector

--- a/atom/browser/api/lib/menu.coffee
+++ b/atom/browser/api/lib/menu.coffee
@@ -1,8 +1,7 @@
-BrowserWindow = require 'browser-window'
-EventEmitter = require('events').EventEmitter
-MenuItem = require 'menu-item'
-v8Util = process.atomBinding 'v8_util'
+{BrowserWindow, MenuItem} = require 'electron'
+{EventEmitter} = require 'events'

+v8Util = process.atomBinding 'v8_util'
 bindings = process.atomBinding 'menu'

 # Automatically generated radio menu item's group id.
@@ -23,6 +22,37 @@ generateGroupId = (items, pos) ->
      break if item.type is 'separator'
  ++nextGroupId

+# Returns the index of item according to |id|.
+indexOfItemById = (items, id) ->
+  return i for item, i in items when item.id is id
+  -1
+
+# Returns the index of where to insert the item according to |position|.
+indexToInsertByPosition = (items, position) ->
+  return items.length unless position
+
+  [query, id] = position.split '='
+  insertIndex = indexOfItemById items, id
+  if insertIndex is -1 and query isnt 'endof'
+    console.warn "Item with id '#{id}' is not found"
+    return items.length
+
+  switch query
+    when 'after'
+      insertIndex++
+    when 'endof'
+      # If the |id| doesn't exist, then create a new group with the |id|.
+      if insertIndex is -1
+        items.push id: id, type: 'separator'
+        insertIndex = items.length - 1
+
+      # Find the end of the group.
+      insertIndex++
+      while insertIndex < items.length and items[insertIndex].type isnt 'separator'
+        insertIndex++
+
+  insertIndex
+
 Menu = bindings.Menu
 Menu::__proto__ = EventEmitter.prototype

@@ -35,7 +65,9 @@ Menu::_init = ->
    isCommandIdEnabled: (commandId) => @commandsMap[commandId]?.enabled
    isCommandIdVisible: (commandId) => @commandsMap[commandId]?.visible
    getAcceleratorForCommandId: (commandId) => @commandsMap[commandId]?.accelerator
-    executeCommand: (commandId) => @commandsMap[commandId]?.click()
+    getIconForCommandId: (commandId) => @commandsMap[commandId]?.icon
+    executeCommand: (commandId) =>
+      @commandsMap[commandId]?.click BrowserWindow.getFocusedWindow()
    menuWillShow: =>
      # Make sure radio groups have at least one menu item seleted.
      for id, group of @groupsMap
@@ -45,9 +77,16 @@ Menu::_init = ->
          break
        v8Util.setHiddenValue group[0], 'checked', true unless checked

-Menu::popup = (window) ->
-  throw new TypeError('Invalid window') unless window?.constructor is BrowserWindow
-  @_popup window
+Menu::popup = (window, x, y) ->
+  unless window?.constructor is BrowserWindow
+    # Shift.
+    y = x
+    x = window
+    window = BrowserWindow.getFocusedWindow()
+  if x? and y?
+    @_popupAt(window, x, y)
+  else
+    @_popup window

 Menu::append = (item) ->
  @insert @getItemCount(), item
@@ -79,6 +118,8 @@ Menu::insert = (pos, item) ->
      @insertRadioItem pos, item.commandId, item.label, item.groupId

  @setSublabel pos, item.sublabel if item.sublabel?
+  @setIcon pos, item.icon if item.icon?
+  @setRole pos, item.role if item.role?

  # Make menu accessable to items.
  item.overrideReadOnlyProperty 'menu', this
@@ -94,10 +135,11 @@ Menu::_callMenuWillShow = ->

 applicationMenu = null
 Menu.setApplicationMenu = (menu) ->
-  throw new TypeError('Invalid menu') unless menu?.constructor is Menu
+  throw new TypeError('Invalid menu') unless menu is null or menu.constructor is Menu
  applicationMenu = menu  # Keep a reference.

  if process.platform is 'darwin'
+    return if menu is null
    menu._callMenuWillShow()
    bindings.setApplicationMenu menu
  else
@@ -111,14 +153,25 @@ Menu.sendActionToFirstResponder = bindings.sendActionToFirstResponder
 Menu.buildFromTemplate = (template) ->
  throw new TypeError('Invalid template for Menu') unless Array.isArray template

-  menu = new Menu
+  positionedTemplate = []
+  insertIndex = 0
+
  for item in template
+    if item.position
+      insertIndex = indexToInsertByPosition positionedTemplate, item.position
+    else
+      # If no |position| is specified, insert after last item.
+      insertIndex++
+    positionedTemplate.splice insertIndex, 0, item
+
+  menu = new Menu
+
+  for item in positionedTemplate
    throw new TypeError('Invalid template for MenuItem') unless typeof item is 'object'

    item.submenu = Menu.buildFromTemplate item.submenu if item.submenu?
    menuItem = new MenuItem(item)
    menuItem[key] = value for key, value of item when not menuItem[key]?
-
    menu.append menuItem

  menu
--- a/atom/browser/api/lib/navigation-controller.coffee
+++ b/atom/browser/api/lib/navigation-controller.coffee
@@ -0,0 +1,122 @@
+{ipcMain} = require 'electron'
+
+# The history operation in renderer is redirected to browser.
+ipcMain.on 'ATOM_SHELL_NAVIGATION_CONTROLLER', (event, method, args...) ->
+  event.sender[method] args...
+
+ipcMain.on 'ATOM_SHELL_SYNC_NAVIGATION_CONTROLLER', (event, method, args...) ->
+  event.returnValue = event.sender[method] args...
+
+# JavaScript implementation of Chromium's NavigationController.
+# Instead of relying on Chromium for history control, we compeletely do history
+# control on user land, and only rely on WebContents.loadURL for navigation.
+# This helps us avoid Chromium's various optimizations so we can ensure renderer
+# process is restarted everytime.
+class NavigationController
+  constructor: (@webContents) ->
+    @clearHistory()
+
+    # webContents may have already navigated to a page.
+    if @webContents._getURL()
+      @currentIndex++
+      @history.push @webContents._getURL()
+
+    @webContents.on 'navigation-entry-commited', (event, url, inPage, replaceEntry) =>
+      if @inPageIndex > -1 and not inPage
+        # Navigated to a new page, clear in-page mark.
+        @inPageIndex = -1
+      else if @inPageIndex is -1 and inPage
+        # Started in-page navigations.
+        @inPageIndex = @currentIndex
+
+      if @pendingIndex >= 0 # Go to index.
+        @currentIndex = @pendingIndex
+        @pendingIndex = -1
+        @history[@currentIndex] = url
+      else if replaceEntry # Non-user initialized navigation.
+        @history[@currentIndex] = url
+      else  # Normal navigation.
+        @history = @history.slice 0, @currentIndex + 1  # Clear history.
+        currentEntry = @history[@currentIndex]
+        if currentEntry?.url isnt url
+          @currentIndex++
+          @history.push url
+
+  loadURL: (url, options={}) ->
+    @pendingIndex = -1
+    @webContents._loadURL url, options
+    @webContents.emit 'load-url', url, options
+
+  getURL: ->
+    if @currentIndex is -1
+      ''
+    else
+      @history[@currentIndex]
+
+  stop: ->
+    @pendingIndex = -1
+    @webContents._stop()
+
+  reload: ->
+    @pendingIndex = @currentIndex
+    @webContents._loadURL @getURL(), {}
+
+  reloadIgnoringCache: ->
+    @pendingIndex = @currentIndex
+    @webContents._loadURL @getURL(), {extraHeaders: "pragma: no-cache\n"}
+
+  canGoBack: ->
+    @getActiveIndex() > 0
+
+  canGoForward: ->
+    @getActiveIndex() < @history.length - 1
+
+  canGoToIndex: (index) ->
+    index >=0 and index < @history.length
+
+  canGoToOffset: (offset) ->
+    @canGoToIndex @currentIndex + offset
+
+  clearHistory: ->
+    @history = []
+    @currentIndex = -1
+    @pendingIndex = -1
+    @inPageIndex = -1
+
+  goBack: ->
+    return unless @canGoBack()
+    @pendingIndex = @getActiveIndex() - 1
+    if @inPageIndex > -1 and @pendingIndex >= @inPageIndex
+      @webContents._goBack()
+    else
+      @webContents._loadURL @history[@pendingIndex], {}
+
+  goForward: ->
+    return unless @canGoForward()
+    @pendingIndex = @getActiveIndex() + 1
+    if @inPageIndex > -1 and @pendingIndex >= @inPageIndex
+      @webContents._goForward()
+    else
+      @webContents._loadURL @history[@pendingIndex], {}
+
+  goToIndex: (index) ->
+    return unless @canGoToIndex index
+    @pendingIndex = index
+    @webContents._loadURL @history[@pendingIndex], {}
+
+  goToOffset: (offset) ->
+    return unless @canGoToOffset offset
+    pendingIndex = @currentIndex + offset
+    if @inPageIndex > -1 and pendingIndex >= @inPageIndex
+      @pendingIndex = pendingIndex
+      @webContents._goToOffset offset
+    else
+      @goToIndex pendingIndex
+
+  getActiveIndex: ->
+    if @pendingIndex is -1 then @currentIndex else @pendingIndex
+
+  length: ->
+    @history.length
+
+module.exports = NavigationController
--- a/atom/browser/api/lib/power-monitor.coffee
+++ b/atom/browser/api/lib/power-monitor.coffee
@@ -1,5 +1,6 @@
-powerMonitor = process.atomBinding('power_monitor').powerMonitor
-EventEmitter = require('events').EventEmitter
+{EventEmitter} = require 'events'
+
+{powerMonitor} = process.atomBinding 'power_monitor'

 powerMonitor.__proto__ = EventEmitter.prototype

--- a/atom/browser/api/lib/power-save-blocker.coffee
+++ b/atom/browser/api/lib/power-save-blocker.coffee
@@ -0,0 +1,3 @@
+{powerSaveBlocker} = process.atomBinding 'power_save_blocker'
+
+module.exports = powerSaveBlocker
--- a/atom/browser/api/lib/protocol.coffee
+++ b/atom/browser/api/lib/protocol.coffee
@@ -1,23 +1,25 @@
-app = require 'app'
+{app} = require 'electron'
+
 throw new Error('Can not initialize protocol module before app is ready') unless app.isReady()

-protocol = process.atomBinding('protocol').protocol
-EventEmitter = require('events').EventEmitter
+{protocol} = process.atomBinding 'protocol'

-protocol.__proto__ = EventEmitter.prototype
-
-protocol.RequestStringJob =
-class RequestStringJob
-  constructor: ({mimeType, charset, data}) ->
-    if typeof data isnt 'string' and not data instanceof Buffer
-      throw new TypeError('Data should be string or Buffer')
-
-    @mimeType = mimeType ? 'text/plain'
-    @charset = charset ? 'UTF-8'
-    @data = String data
-
-protocol.RequestFileJob =
-class RequestFileJob
-  constructor: (@path) ->
+# Warn about removed APIs.
+logAndThrow = (callback, message) ->
+  console.error message
+  if callback then callback(new Error(message)) else throw new Error(message)
+protocol.registerProtocol = (scheme, handler, callback) ->
+  logAndThrow callback,
+              'registerProtocol API has been replaced by the
+               register[File/Http/Buffer/String]Protocol API family, please
+               switch to the new APIs.'
+protocol.isHandledProtocol = (scheme, callback) ->
+  logAndThrow callback,
+              'isHandledProtocol API has been replaced by isProtocolHandled.'
+protocol.interceptProtocol = (scheme, handler, callback) ->
+  logAndThrow callback,
+              'interceptProtocol API has been replaced by the
+               intercept[File/Http/Buffer/String]Protocol API family, please
+               switch to the new APIs.'

 module.exports = protocol
--- a/atom/browser/api/lib/screen.coffee
+++ b/atom/browser/api/lib/screen.coffee
@@ -0,0 +1,6 @@
+{EventEmitter} = require 'events'
+{screen} = process.atomBinding 'screen'
+
+screen.__proto__ = EventEmitter.prototype
+
+module.exports = screen
--- a/atom/browser/api/lib/session.coffee
+++ b/atom/browser/api/lib/session.coffee
@@ -0,0 +1,23 @@
+{EventEmitter} = require 'events'
+
+bindings = process.atomBinding 'session'
+
+PERSIST_PERFIX = 'persist:'
+
+# Returns the Session from |partition| string.
+exports.fromPartition = (partition='') ->
+  if partition.startsWith PERSIST_PERFIX
+    bindings.fromPartition partition.substr(PERSIST_PERFIX.length), false
+  else
+    bindings.fromPartition partition, true
+
+# Returns the default session.
+Object.defineProperty exports, 'defaultSession',
+  enumerable: true
+  get: -> exports.fromPartition ''
+
+wrapSession = (session) ->
+  # session is an EventEmitter.
+  session.__proto__ = EventEmitter.prototype
+
+bindings._setWrapSession wrapSession
--- a/atom/browser/api/lib/tray.coffee
+++ b/atom/browser/api/lib/tray.coffee
@@ -1,8 +1,17 @@
-EventEmitter = require('events').EventEmitter
-bindings = process.atomBinding 'tray'
+{deprecate} = require 'electron'
+{EventEmitter} = require 'events'

-Tray = bindings.Tray
+{Tray} = process.atomBinding 'tray'
 Tray::__proto__ = EventEmitter.prototype
+
+Tray::_init = ->
+  # Deprecated.
+  deprecate.rename this, 'popContextMenu', 'popUpContextMenu'
+  deprecate.event this, 'clicked', 'click'
+  deprecate.event this, 'double-clicked', 'double-click'
+  deprecate.event this, 'right-clicked', 'right-click'
+  deprecate.event this, 'balloon-clicked', 'balloon-click'
+
 Tray::setContextMenu = (menu) ->
  @_setContextMenu menu
  @menu = menu  # Keep a strong reference of menu.
--- a/atom/browser/api/lib/web-contents.coffee
+++ b/atom/browser/api/lib/web-contents.coffee
@@ -1,62 +1,132 @@
-EventEmitter = require('events').EventEmitter
+{EventEmitter} = require 'events'
+{deprecate, ipcMain, session, NavigationController, Menu} = require 'electron'
+
 binding = process.atomBinding 'web_contents'
-ipc = require 'ipc'

-module.exports.wrap = (webContents) ->
-  return null unless webContents.isAlive()
+nextId = 0
+getNextId = -> ++nextId

+PDFPageSize =
+  A4:
+    custom_display_name: "A4"
+    height_microns: 297000
+    name: "ISO_A4"
+    is_default: "true"
+    width_microns: 210000
+  A3:
+    custom_display_name: "A3"
+    height_microns: 420000
+    name: "ISO_A3"
+    width_microns: 297000
+  Legal:
+    custom_display_name: "Legal"
+    height_microns: 355600
+    name: "NA_LEGAL"
+    width_microns: 215900
+  Letter:
+    custom_display_name: "Letter"
+    height_microns: 279400
+    name: "NA_LETTER"
+    width_microns: 215900
+  Tabloid:
+    height_microns: 431800
+    name: "NA_LEDGER"
+    width_microns: 279400
+    custom_display_name: "Tabloid"
+
+wrapWebContents = (webContents) ->
  # webContents is an EventEmitter.
  webContents.__proto__ = EventEmitter.prototype

  # WebContents::send(channel, args..)
-  webContents.send = (args...) ->
-    @_send 'ATOM_INTERNAL_MESSAGE', [args...]
+  webContents.send = (channel, args...) ->
+    @_send channel, [args...]

  # Make sure webContents.executeJavaScript would run the code only when the
  # web contents has been loaded.
-  webContents.loaded = false
-  webContents.once 'did-finish-load', -> @loaded = true
-  webContents.executeJavaScript = (code) ->
-    if @loaded
-      @_executeJavaScript code
+  webContents.executeJavaScript = (code, hasUserGesture=false) ->
+    if @getURL() and not @isLoading()
+      @_executeJavaScript code, hasUserGesture
    else
-      webContents.once 'did-finish-load', @_executeJavaScript.bind(this, code)
+      webContents.once 'did-finish-load', @_executeJavaScript.bind(this, code, hasUserGesture)

-  # The processId and routingId and identify a webContents.
-  webContents.getId = -> "#{@getProcessId()}-#{@getRoutingId()}"
-  webContents.equal = (other) -> @getId() is other.getId()
-
-  # Provide a default parameter for |urlOptions|.
-  webContents.loadUrl = (url, urlOptions={}) -> @_loadUrl url, urlOptions
-  webContents.reload = (urlOptions={}) -> @_reload urlOptions
-  webContents.reloadIgnoringCache = (urlOptions={}) -> @_reloadIgnoringCache urlOptions
-
-  # Translate |disposition| to string for 'new-window' event.
-  webContents.on '-new-window', (args..., disposition) ->
-    disposition =
-      switch disposition
-        when 2 then 'default'
-        when 4 then 'foreground-tab'
-        when 5 then 'background-tab'
-        when 6, 7 then 'new-window'
-        else 'other'
-    @emit 'new-window', args..., disposition
-
-  # Tell the rpc server that a render view has been deleted and we need to
-  # release all objects owned by it.
-  webContents.on 'render-view-deleted', (event, processId, routingId) ->
-    process.emit 'ATOM_BROWSER_RELEASE_RENDER_VIEW', "#{processId}-#{routingId}"
+  # The navigation controller.
+  controller = new NavigationController(webContents)
+  for name, method of NavigationController.prototype when method instanceof Function
+    do (name, method) ->
+      webContents[name] = -> method.apply controller, arguments

  # Dispatch IPC messages to the ipc module.
-  webContents.on 'ipc-message', (event, channel, args...) ->
-    Object.defineProperty event, 'sender', value: webContents
-    ipc.emit channel, event, args...
-  webContents.on 'ipc-message-sync', (event, channel, args...) ->
+  webContents.on 'ipc-message', (event, packed) ->
+    [channel, args...] = packed
+    ipcMain.emit channel, event, args...
+  webContents.on 'ipc-message-sync', (event, packed) ->
+    [channel, args...] = packed
    Object.defineProperty event, 'returnValue', set: (value) -> event.sendReply JSON.stringify(value)
-    Object.defineProperty event, 'sender', value: webContents
-    ipc.emit channel, event, args...
+    ipcMain.emit channel, event, args...

-  webContents
+  # Handle context menu action request from pepper plugin.
+  webContents.on 'pepper-context-menu', (event, params) ->
+    menu = Menu.buildFromTemplate params.menu
+    menu.popup params.x, params.y
+
+  # This error occurs when host could not be found.
+  webContents.on 'did-fail-provisional-load', (args...) ->
+    # Calling loadURL during this event might cause crash, so delay the event
+    # until next tick.
+    setImmediate => @emit 'did-fail-load', args...
+
+  # Delays the page-title-updated event to next tick.
+  webContents.on '-page-title-updated', (args...) ->
+    setImmediate => @emit 'page-title-updated', args...
+
+  # Deprecated.
+  deprecate.rename webContents, 'loadUrl', 'loadURL'
+  deprecate.rename webContents, 'getUrl', 'getURL'
+  deprecate.event webContents, 'page-title-set', 'page-title-updated', (args...) ->
+    @emit 'page-title-set', args...
+
+  webContents.printToPDF = (options, callback) ->
+    printingSetting =
+      pageRage: []
+      mediaSize: {}
+      landscape: false
+      color: 2
+      headerFooterEnabled: false
+      marginsType: 0
+      isFirstRequest: false
+      requestID: getNextId()
+      previewModifiable: true
+      printToPDF: true
+      printWithCloudPrint: false
+      printWithPrivet: false
+      printWithExtension: false
+      deviceName: "Save as PDF"
+      generateDraftData: true
+      fitToPageEnabled: false
+      duplex: 0
+      copies: 1
+      collate: true
+      shouldPrintBackgrounds: false
+      shouldPrintSelectionOnly: false
+
+    if options.landscape
+      printingSetting.landscape = options.landscape
+    if options.marginsType
+      printingSetting.marginsType = options.marginsType
+    if options.printSelectionOnly
+      printingSetting.shouldPrintSelectionOnly = options.printSelectionOnly
+    if options.printBackground
+      printingSetting.shouldPrintBackgrounds = options.printBackground
+
+    if options.pageSize and PDFPageSize[options.pageSize]
+      printingSetting.mediaSize = PDFPageSize[options.pageSize]
+    else
+      printingSetting.mediaSize = PDFPageSize['A4']
+
+    @_printToPDF printingSetting, callback
+
+binding._setWrapWebContents wrapWebContents

 module.exports.create = (options={}) ->
-  @wrap binding.create(options)
+  binding.create(options)
--- a/atom/browser/api/save_page_handler.cc
+++ b/atom/browser/api/save_page_handler.cc
@@ -0,0 +1,83 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/save_page_handler.h"
+
+#include <string>
+
+#include "atom/browser/atom_browser_context.h"
+#include "base/callback.h"
+#include "base/files/file_path.h"
+#include "content/public/browser/web_contents.h"
+
+namespace atom {
+
+namespace api {
+
+SavePageHandler::SavePageHandler(content::WebContents* web_contents,
+                                 const SavePageCallback& callback)
+    : web_contents_(web_contents),
+      callback_(callback) {
+}
+
+SavePageHandler::~SavePageHandler() {
+}
+
+void SavePageHandler::OnDownloadCreated(content::DownloadManager* manager,
+                                        content::DownloadItem* item) {
+  // OnDownloadCreated is invoked during WebContents::SavePage, so the |item|
+  // here is the one stated by WebContents::SavePage.
+  item->AddObserver(this);
+}
+
+bool SavePageHandler::Handle(const base::FilePath& full_path,
+                             const content::SavePageType& save_type) {
+  auto download_manager = content::BrowserContext::GetDownloadManager(
+      web_contents_->GetBrowserContext());
+  download_manager->AddObserver(this);
+  // Chromium will create a 'foo_files' directory under the directory of saving
+  // page 'foo.html' for holding other resource files of 'foo.html'.
+  base::FilePath saved_main_directory_path = full_path.DirName().Append(
+      full_path.RemoveExtension().BaseName().value() +
+      FILE_PATH_LITERAL("_files"));
+  bool result = web_contents_->SavePage(full_path,
+                                        saved_main_directory_path,
+                                        save_type);
+  download_manager->RemoveObserver(this);
+  // If initialization fails which means fail to create |DownloadItem|, we need
+  // to delete the |SavePageHandler| instance to avoid memory-leak.
+  if (!result)
+    delete this;
+  return result;
+}
+
+void SavePageHandler::OnDownloadUpdated(content::DownloadItem* item) {
+  if (item->IsDone()) {
+    v8::Isolate* isolate = v8::Isolate::GetCurrent();
+    v8::Locker locker(isolate);
+    v8::HandleScope handle_scope(isolate);
+    if (item->GetState() == content::DownloadItem::COMPLETE) {
+      callback_.Run(v8::Null(isolate));
+    } else {
+      v8::Local<v8::String> error_message = v8::String::NewFromUtf8(
+          isolate, "Fail to save page");
+      callback_.Run(v8::Exception::Error(error_message));
+    }
+    Destroy(item);
+  }
+}
+
+void SavePageHandler::Destroy(content::DownloadItem* item) {
+  item->RemoveObserver(this);
+  delete this;
+}
+
+// static
+bool SavePageHandler::IsSavePageTypes(const std::string& type) {
+  return type == "multipart/related" || type == "text/html";
+}
+
+}  // namespace api
+
+}  // namespace atom
--- a/atom/browser/api/save_page_handler.h
+++ b/atom/browser/api/save_page_handler.h
@@ -0,0 +1,60 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_SAVE_PAGE_HANDLER_H_
+#define ATOM_BROWSER_API_SAVE_PAGE_HANDLER_H_
+
+#include <string>
+
+#include "content/public/browser/download_item.h"
+#include "content/public/browser/download_manager.h"
+#include "content/public/browser/save_page_type.h"
+#include "v8/include/v8.h"
+
+namespace base {
+class FilePath;
+}
+
+namespace content {
+class WebContents;
+}
+
+namespace atom {
+
+namespace api {
+
+// A self-destroyed class for handling save page request.
+class SavePageHandler : public content::DownloadManager::Observer,
+                        public content::DownloadItem::Observer {
+ public:
+  using SavePageCallback = base::Callback<void(v8::Local<v8::Value>)>;
+
+  SavePageHandler(content::WebContents* web_contents,
+                  const SavePageCallback& callback);
+  ~SavePageHandler();
+
+  bool Handle(const base::FilePath& full_path,
+              const content::SavePageType& save_type);
+
+  static bool IsSavePageTypes(const std::string& type);
+
+ private:
+  void Destroy(content::DownloadItem* item);
+
+  // content::DownloadManager::Observer:
+  void OnDownloadCreated(content::DownloadManager* manager,
+                         content::DownloadItem* item) override;
+
+  // content::DownloadItem::Observer:
+  void OnDownloadUpdated(content::DownloadItem* item) override;
+
+  content::WebContents* web_contents_;  // weak
+  SavePageCallback callback_;
+};
+
+}  // namespace api
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_API_SAVE_PAGE_HANDLER_H_
--- a/atom/browser/api/trackable_object.cc
+++ b/atom/browser/api/trackable_object.cc
@@ -0,0 +1,83 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/api/trackable_object.h"
+
+#include "atom/browser/atom_browser_main_parts.h"
+#include "base/bind.h"
+#include "base/supports_user_data.h"
+
+namespace mate {
+
+namespace {
+
+const char* kTrackedObjectKey = "TrackedObjectKey";
+
+class IDUserData : public base::SupportsUserData::Data {
+ public:
+  explicit IDUserData(int32_t id) : id_(id) {}
+
+  operator int32_t() const { return id_; }
+
+ private:
+  int32_t id_;
+
+  DISALLOW_COPY_AND_ASSIGN(IDUserData);
+};
+
+}  // namespace
+
+TrackableObjectBase::TrackableObjectBase()
+    : weak_map_id_(0), wrapped_(nullptr), weak_factory_(this) {
+  cleanup_ = RegisterDestructionCallback(GetDestroyClosure());
+}
+
+TrackableObjectBase::~TrackableObjectBase() {
+  cleanup_.Run();
+}
+
+void TrackableObjectBase::AfterInit(v8::Isolate* isolate) {
+  if (wrapped_)
+    AttachAsUserData(wrapped_);
+}
+
+void TrackableObjectBase::MarkDestroyed() {
+  GetWrapper(isolate())->SetAlignedPointerInInternalField(0, nullptr);
+}
+
+base::Closure TrackableObjectBase::GetDestroyClosure() {
+  return base::Bind(&TrackableObjectBase::Destroy, weak_factory_.GetWeakPtr());
+}
+
+void TrackableObjectBase::Destroy() {
+  delete this;
+}
+
+void TrackableObjectBase::AttachAsUserData(base::SupportsUserData* wrapped) {
+  if (weak_map_id_ != 0) {
+    wrapped->SetUserData(kTrackedObjectKey, new IDUserData(weak_map_id_));
+    wrapped_ = nullptr;
+  } else {
+    // If the TrackableObjectBase is not ready yet then delay SetUserData until
+    // AfterInit is called.
+    wrapped_ = wrapped;
+  }
+}
+
+// static
+int32_t TrackableObjectBase::GetIDFromWrappedClass(base::SupportsUserData* w) {
+  auto id = static_cast<IDUserData*>(w->GetUserData(kTrackedObjectKey));
+  if (id)
+    return *id;
+  else
+    return 0;
+}
+
+// static
+base::Closure TrackableObjectBase::RegisterDestructionCallback(
+    const base::Closure& c) {
+  return atom::AtomBrowserMainParts::Get()->RegisterDestructionCallback(c);
+}
+
+}  // namespace mate
--- a/atom/browser/api/trackable_object.h
+++ b/atom/browser/api/trackable_object.h
@@ -0,0 +1,156 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_API_TRACKABLE_OBJECT_H_
+#define ATOM_BROWSER_API_TRACKABLE_OBJECT_H_
+
+#include <vector>
+
+#include "atom/browser/api/event_emitter.h"
+#include "atom/common/id_weak_map.h"
+#include "base/bind.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "native_mate/object_template_builder.h"
+
+namespace base {
+class SupportsUserData;
+}
+
+namespace mate {
+
+// Users should use TrackableObject instead.
+class TrackableObjectBase : public mate::EventEmitter {
+ public:
+  TrackableObjectBase();
+
+  // The ID in weak map.
+  int32_t weak_map_id() const { return weak_map_id_; }
+
+  // Wrap TrackableObject into a class that SupportsUserData.
+  void AttachAsUserData(base::SupportsUserData* wrapped);
+
+ protected:
+  ~TrackableObjectBase() override;
+
+  // mate::Wrappable:
+  void AfterInit(v8::Isolate* isolate) override;
+
+  // Mark the JS object as destroyed.
+  void MarkDestroyed();
+
+  // Returns a closure that can destroy the native class.
+  base::Closure GetDestroyClosure();
+
+  // Get the weak_map_id from SupportsUserData.
+  static int32_t GetIDFromWrappedClass(base::SupportsUserData* wrapped);
+
+  // Register a callback that should be destroyed before JavaScript environment
+  // gets destroyed.
+  static base::Closure RegisterDestructionCallback(const base::Closure& c);
+
+  int32_t weak_map_id_;
+  base::SupportsUserData* wrapped_;
+
+ private:
+  void Destroy();
+
+  base::Closure cleanup_;
+  base::WeakPtrFactory<TrackableObjectBase> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(TrackableObjectBase);
+};
+
+// All instances of TrackableObject will be kept in a weak map and can be got
+// from its ID.
+template<typename T>
+class TrackableObject : public TrackableObjectBase {
+ public:
+  // Finds out the TrackableObject from its ID in weak map.
+  static T* FromWeakMapID(v8::Isolate* isolate, int32_t id) {
+    if (!weak_map_)
+      return nullptr;
+
+    v8::MaybeLocal<v8::Object> object = weak_map_->Get(isolate, id);
+    if (object.IsEmpty())
+      return nullptr;
+
+    T* self = nullptr;
+    mate::ConvertFromV8(isolate, object.ToLocalChecked(), &self);
+    return self;
+  }
+
+  // Finds out the TrackableObject from the class it wraps.
+  static T* FromWrappedClass(v8::Isolate* isolate,
+                             base::SupportsUserData* wrapped) {
+    int32_t id = GetIDFromWrappedClass(wrapped);
+    if (!id)
+      return nullptr;
+    return FromWeakMapID(isolate, id);
+  }
+
+  // Returns all objects in this class's weak map.
+  static std::vector<v8::Local<v8::Object>> GetAll(v8::Isolate* isolate) {
+    if (weak_map_)
+      return weak_map_->Values(isolate);
+    else
+      return std::vector<v8::Local<v8::Object>>();
+  }
+
+  // Removes this instance from the weak map.
+  void RemoveFromWeakMap() {
+    if (weak_map_ && weak_map_->Has(weak_map_id()))
+      weak_map_->Remove(weak_map_id());
+  }
+
+ protected:
+  TrackableObject() {}
+  ~TrackableObject() override {
+    RemoveFromWeakMap();
+  }
+
+  void AfterInit(v8::Isolate* isolate) override {
+    if (!weak_map_) {
+      weak_map_.reset(new atom::IDWeakMap);
+      RegisterDestructionCallback(
+          base::Bind(&TrackableObject<T>::ReleaseAllWeakReferences));
+    }
+    weak_map_id_ = weak_map_->Add(isolate, GetWrapper(isolate));
+    TrackableObjectBase::AfterInit(isolate);
+  }
+
+ private:
+  // mate::Wrappable:
+  mate::ObjectTemplateBuilder GetObjectTemplateBuilder(
+      v8::Isolate* isolate) override {
+    if (template_.IsEmpty()) {
+      auto templ = v8::ObjectTemplate::New(isolate);
+      T::BuildPrototype(isolate, templ);
+      template_.Reset(isolate, templ);
+    }
+
+    return ObjectTemplateBuilder(
+        isolate, v8::Local<v8::ObjectTemplate>::New(isolate, template_));
+  }
+
+  // Releases all weak references in weak map, called when app is terminating.
+  static void ReleaseAllWeakReferences() {
+    weak_map_.reset();
+  }
+
+  static v8::Persistent<v8::ObjectTemplate> template_;
+  static scoped_ptr<atom::IDWeakMap> weak_map_;
+
+  DISALLOW_COPY_AND_ASSIGN(TrackableObject);
+};
+
+template<typename T>
+v8::Persistent<v8::ObjectTemplate> TrackableObject<T>::template_;
+
+template<typename T>
+scoped_ptr<atom::IDWeakMap> TrackableObject<T>::weak_map_;
+
+}  // namespace mate
+
+#endif  // ATOM_BROWSER_API_TRACKABLE_OBJECT_H_
--- a/atom/browser/atom_access_token_store.cc
+++ b/atom/browser/atom_access_token_store.cc
@@ -7,7 +7,9 @@
 #include <utility>

 #include "atom/browser/atom_browser_context.h"
+#include "atom/browser/atom_browser_main_parts.h"
 #include "atom/common/google_api_key.h"
+#include "content/public/browser/geolocation_provider.h"

 namespace atom {

@@ -16,13 +18,14 @@ namespace {
 // Notice that we just combined the api key with the url together here, because
 // if we use the standard {url: key} format Chromium would override our key with
 // the predefined one in common.gypi of libchromiumcontent, which is empty.
-const char* kGeolocationProviderUrl =
+const char* kGeolocationProviderURL =
    "https://www.googleapis.com/geolocation/v1/geolocate?key="
    GOOGLEAPIS_API_KEY;

 }  // namespace

 AtomAccessTokenStore::AtomAccessTokenStore() {
+  content::GeolocationProvider::GetInstance()->UserDidOptIntoLocationServices();
 }

 AtomAccessTokenStore::~AtomAccessTokenStore() {
@@ -32,15 +35,15 @@ void AtomAccessTokenStore::LoadAccessTokens(
    const LoadAccessTokensCallbackType& callback) {
  AccessTokenSet access_token_set;

-  // Equivelent to access_token_set[kGeolocationProviderUrl].
+  // Equivelent to access_token_set[kGeolocationProviderURL].
  // Somehow base::string16 is causing compilation errors when used in a pair
  // of std::map on Linux, this can work around it.
  std::pair<GURL, base::string16> token_pair;
-  token_pair.first = GURL(kGeolocationProviderUrl);
+  token_pair.first = GURL(kGeolocationProviderURL);
  access_token_set.insert(token_pair);

-  callback.Run(access_token_set,
-               AtomBrowserContext::Get()->url_request_context_getter());
+  auto browser_context = AtomBrowserMainParts::Get()->browser_context();
+  callback.Run(access_token_set, browser_context->url_request_context_getter());
 }

 void AtomAccessTokenStore::SaveAccessToken(const GURL& server_url,
--- a/atom/browser/atom_access_token_store.h
+++ b/atom/browser/atom_access_token_store.h
@@ -17,10 +17,10 @@ class AtomAccessTokenStore : public content::AccessTokenStore {
  virtual ~AtomAccessTokenStore();

  // content::AccessTokenStore:
-  virtual void LoadAccessTokens(
-      const LoadAccessTokensCallbackType& callback) OVERRIDE;
-  virtual void SaveAccessToken(const GURL& server_url,
-                               const base::string16& access_token) OVERRIDE;
+  void LoadAccessTokens(
+      const LoadAccessTokensCallbackType& callback) override;
+  void SaveAccessToken(const GURL& server_url,
+                       const base::string16& access_token) override;

 private:
  DISALLOW_COPY_AND_ASSIGN(AtomAccessTokenStore);
--- a/atom/browser/atom_browser_client.cc
+++ b/atom/browser/atom_browser_client.cc
@@ -4,50 +4,90 @@

 #include "atom/browser/atom_browser_client.h"

+#if defined(OS_WIN)
+#include <shlobj.h>
+#endif
+
 #include "atom/browser/atom_access_token_store.h"
 #include "atom/browser/atom_browser_context.h"
 #include "atom/browser/atom_browser_main_parts.h"
+#include "atom/browser/atom_quota_permission_context.h"
+#include "atom/browser/atom_resource_dispatcher_host_delegate.h"
 #include "atom/browser/atom_speech_recognition_manager_delegate.h"
 #include "atom/browser/native_window.h"
-#include "atom/browser/web_view/web_view_renderer_state.h"
+#include "atom/browser/web_contents_preferences.h"
 #include "atom/browser/window_list.h"
 #include "atom/common/options_switches.h"
 #include "base/command_line.h"
+#include "base/files/file_util.h"
+#include "base/stl_util.h"
+#include "base/strings/string_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/printing/printing_message_filter.h"
+#include "chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h"
 #include "chrome/browser/speech/tts_message_filter.h"
+#include "content/public/browser/browser_ppapi_host.h"
+#include "content/public/browser/client_certificate_delegate.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
+#include "content/public/browser/resource_dispatcher_host.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/web_preferences.h"
+#include "net/cert/x509_certificate.h"
+#include "net/ssl/ssl_cert_request_info.h"
+#include "ppapi/host/ppapi_host.h"
 #include "ui/base/l10n/l10n_util.h"
+#include "v8/include/v8.h"

 namespace atom {

 namespace {

-struct FindByProcessId {
-  explicit FindByProcessId(int child_process_id)
-      : child_process_id_(child_process_id) {
-  }
+// The default routing id of WebContents.
+// In Electron each RenderProcessHost only has one WebContents, so this ID is
+// same for every WebContents.
+int kDefaultRoutingID = 2;

-  bool operator() (NativeWindow* const window) {
-    content::WebContents* web_contents = window->GetWebContents();
-    if (!web_contents)
-      return false;
+// Next navigation should not restart renderer process.
+bool g_suppress_renderer_process_restart = false;

-    int id = window->GetWebContents()->GetRenderProcessHost()->GetID();
-    return id == child_process_id_;
-  }
+// Custom schemes to be registered to standard.
+std::string g_custom_schemes = "";

-  int child_process_id_;
-};
+scoped_refptr<net::X509Certificate> ImportCertFromFile(
+    const base::FilePath& path) {
+  if (path.empty())
+    return nullptr;
+
+  std::string cert_data;
+  if (!base::ReadFileToString(path, &cert_data))
+    return nullptr;
+
+  net::CertificateList certs =
+      net::X509Certificate::CreateCertificateListFromBytes(
+          cert_data.data(), cert_data.size(),
+          net::X509Certificate::FORMAT_AUTO);
+
+  if (certs.empty())
+    return nullptr;
+
+  return certs[0];
+}

 }  // namespace

-AtomBrowserClient::AtomBrowserClient()
-    : dying_render_process_(NULL) {
+// static
+void AtomBrowserClient::SuppressRendererProcessRestartForOnce() {
+  g_suppress_renderer_process_restart = true;
+}
+
+void AtomBrowserClient::SetCustomSchemes(
+    const std::vector<std::string>& schemes) {
+  g_custom_schemes = JoinString(schemes, ',');
+}
+
+AtomBrowserClient::AtomBrowserClient() : delegate_(nullptr) {
 }

 AtomBrowserClient::~AtomBrowserClient() {
@@ -55,13 +95,13 @@ AtomBrowserClient::~AtomBrowserClient() {

 void AtomBrowserClient::RenderProcessWillLaunch(
    content::RenderProcessHost* host) {
-  int id = host->GetID();
-  host->AddFilter(new PrintingMessageFilter(host->GetID()));
-  host->AddFilter(new TtsMessageFilter(id, host->GetBrowserContext()));
+  int process_id = host->GetID();
+  host->AddFilter(new printing::PrintingMessageFilter(process_id));
+  host->AddFilter(new TtsMessageFilter(process_id, host->GetBrowserContext()));
 }

 content::SpeechRecognitionManagerDelegate*
-    AtomBrowserClient::GetSpeechRecognitionManagerDelegate() {
+    AtomBrowserClient::CreateSpeechRecognitionManagerDelegate() {
  return new AtomSpeechRecognitionManagerDelegate;
 }

@@ -70,9 +110,7 @@ content::AccessTokenStore* AtomBrowserClient::CreateAccessTokenStore() {
 }

 void AtomBrowserClient::OverrideWebkitPrefs(
-    content::RenderViewHost* render_view_host,
-    const GURL& url,
-    content::WebPreferences* prefs) {
+    content::RenderViewHost* host, content::WebPreferences* prefs) {
  prefs->javascript_enabled = true;
  prefs->web_security_enabled = true;
  prefs->javascript_can_open_windows_automatically = true;
@@ -87,83 +125,133 @@ void AtomBrowserClient::OverrideWebkitPrefs(
  prefs->allow_universal_access_from_file_urls = true;
  prefs->allow_file_access_from_file_urls = true;
  prefs->experimental_webgl_enabled = true;
-  prefs->allow_displaying_insecure_content = true;
-  prefs->allow_running_insecure_content = true;
+  prefs->allow_displaying_insecure_content = false;
+  prefs->allow_running_insecure_content = false;

-  // Turn off web security for devtools.
-  if (url.SchemeIs("chrome-devtools")) {
-    prefs->web_security_enabled = false;
-    return;
-  }
-
-  NativeWindow* window = NativeWindow::FromRenderView(
-      render_view_host->GetProcess()->GetID(),
-      render_view_host->GetRoutingID());
-  if (window)
-    window->OverrideWebkitPrefs(url, prefs);
-}
-
-bool AtomBrowserClient::ShouldSwapBrowsingInstancesForNavigation(
-    content::SiteInstance* site_instance,
-    const GURL& current_url,
-    const GURL& new_url) {
-  if (site_instance->HasProcess())
-    dying_render_process_ = site_instance->GetProcess();
-
-  // Restart renderer process for all navigations, this relies on a patch to
-  // Chromium: http://git.io/_PaNyg.
-  return true;
+  // Custom preferences of guest page.
+  auto web_contents = content::WebContents::FromRenderViewHost(host);
+  WebContentsPreferences::OverrideWebkitPrefs(web_contents, prefs);
 }

 std::string AtomBrowserClient::GetApplicationLocale() {
  return l10n_util::GetApplicationLocale("");
 }

+void AtomBrowserClient::OverrideSiteInstanceForNavigation(
+    content::BrowserContext* browser_context,
+    content::SiteInstance* current_instance,
+    const GURL& url,
+    content::SiteInstance** new_instance) {
+  if (g_suppress_renderer_process_restart) {
+    g_suppress_renderer_process_restart = false;
+    return;
+  }
+
+  // Restart renderer process for all navigations except "javacript:" scheme.
+  if (url.SchemeIs(url::kJavaScriptScheme))
+    return;
+
+  *new_instance = content::SiteInstance::CreateForURL(browser_context, url);
+
+  // Remember the original renderer process of the pending renderer process.
+  auto current_process = current_instance->GetProcess();
+  auto pending_process = (*new_instance)->GetProcess();
+  pending_processes_[pending_process->GetID()] = current_process->GetID();
+  // Clear the entry in map when process ends.
+  current_process->AddObserver(this);
+}
+
 void AtomBrowserClient::AppendExtraCommandLineSwitches(
    base::CommandLine* command_line,
-    int child_process_id) {
-  WindowList* list = WindowList::GetInstance();
-  NativeWindow* window = NULL;
+    int process_id) {
+  std::string process_type = command_line->GetSwitchValueASCII("type");
+  if (process_type != "renderer")
+    return;

-  // Find the owner of this child process.
-  WindowList::const_iterator iter = std::find_if(
-      list->begin(), list->end(), FindByProcessId(child_process_id));
-  if (iter != list->end())
-    window = *iter;
+  // The registered standard schemes.
+  if (!g_custom_schemes.empty())
+    command_line->AppendSwitchASCII(switches::kRegisterStandardSchemes,
+                                    g_custom_schemes);

-  // If the render process is a newly started one, which means the window still
-  // uses the old going-to-be-swapped render process, then we try to find the
-  // window from the swapped render process.
-  if (window == NULL && dying_render_process_ != NULL) {
-    child_process_id = dying_render_process_->GetID();
-    WindowList::const_iterator iter = std::find_if(
-        list->begin(), list->end(), FindByProcessId(child_process_id));
-    if (iter != list->end())
-      window = *iter;
+#if defined(OS_WIN)
+  // Append --app-user-model-id.
+  PWSTR current_app_id;
+  if (SUCCEEDED(GetCurrentProcessExplicitAppUserModelID(&current_app_id))) {
+    command_line->AppendSwitchNative(switches::kAppUserModelId, current_app_id);
+    CoTaskMemFree(current_app_id);
+  }
+#endif
+
+  // If the process is a pending process, we should use the old one.
+  if (ContainsKey(pending_processes_, process_id))
+    process_id = pending_processes_[process_id];
+
+  // Get the WebContents of the render process.
+  content::WebContents* web_contents = content::WebContents::FromRenderViewHost(
+      content::RenderViewHost::FromID(process_id, kDefaultRoutingID));
+  if (!web_contents)
+    return;
+
+  WebContentsPreferences::AppendExtraCommandLineSwitches(
+      web_contents, command_line);
+}
+
+void AtomBrowserClient::DidCreatePpapiPlugin(
+    content::BrowserPpapiHost* host) {
+  host->GetPpapiHost()->AddHostFactoryFilter(
+      make_scoped_ptr(new chrome::ChromeBrowserPepperHostFactory(host)));
+}
+
+content::QuotaPermissionContext*
+    AtomBrowserClient::CreateQuotaPermissionContext() {
+  return new AtomQuotaPermissionContext;
+}
+
+void AtomBrowserClient::AllowCertificateError(
+    int render_process_id,
+    int render_frame_id,
+    int cert_error,
+    const net::SSLInfo& ssl_info,
+    const GURL& request_url,
+    content::ResourceType resource_type,
+    bool overridable,
+    bool strict_enforcement,
+    bool expired_previous_decision,
+    const base::Callback<void(bool)>& callback,
+    content::CertificateRequestResultType* request) {
+  if (delegate_) {
+    delegate_->AllowCertificateError(
+        render_process_id, render_frame_id, cert_error, ssl_info, request_url,
+        resource_type, overridable, strict_enforcement,
+        expired_previous_decision, callback, request);
+  }
+}
+
+void AtomBrowserClient::SelectClientCertificate(
+    content::WebContents* web_contents,
+    net::SSLCertRequestInfo* cert_request_info,
+    scoped_ptr<content::ClientCertificateDelegate> delegate) {
+  // --client-certificate=`path`
+  auto cmd = base::CommandLine::ForCurrentProcess();
+  if (cmd->HasSwitch(switches::kClientCertificate)) {
+    auto cert_path = cmd->GetSwitchValuePath(switches::kClientCertificate);
+    auto certificate = ImportCertFromFile(cert_path);
+    if (certificate.get())
+      delegate->ContinueWithCertificate(certificate.get());
+    return;
  }

-  if (window != NULL) {
-    window->AppendExtraCommandLineSwitches(command_line, child_process_id);
-  } else {
-    // Append commnad line arguments for guest web view.
-    WebViewRendererState::WebViewInfo info;
-    if (WebViewRendererState::GetInstance()->GetInfo(child_process_id, &info)) {
-      command_line->AppendSwitchASCII(
-          switches::kGuestInstanceID,
-          base::IntToString(info.guest_instance_id));
-      command_line->AppendSwitchASCII(
-          switches::kNodeIntegration,
-          info.node_integration ? "true" : "false");
-      if (info.plugins)
-        command_line->AppendSwitch(switches::kEnablePlugins);
-      if (!info.preload_script.empty())
-        command_line->AppendSwitchPath(
-            switches::kPreloadScript,
-            info.preload_script);
-    }
+  if (!cert_request_info->client_certs.empty() && delegate_) {
+    delegate_->SelectClientCertificate(
+        web_contents, cert_request_info, delegate.Pass());
  }
+}

-  dying_render_process_ = NULL;
+void AtomBrowserClient::ResourceDispatcherHostCreated() {
+  resource_dispatcher_host_delegate_.reset(
+      new AtomResourceDispatcherHostDelegate);
+  content::ResourceDispatcherHost::Get()->SetDelegate(
+      resource_dispatcher_host_delegate_.get());
 }

 brightray::BrowserMainParts* AtomBrowserClient::OverrideCreateBrowserMainParts(
@@ -172,4 +260,15 @@ brightray::BrowserMainParts* AtomBrowserClient::OverrideCreateBrowserMainParts(
  return new AtomBrowserMainParts;
 }

+void AtomBrowserClient::RenderProcessHostDestroyed(
+    content::RenderProcessHost* host) {
+  int process_id = host->GetID();
+  for (const auto& entry : pending_processes_) {
+    if (entry.first == process_id || entry.second == process_id) {
+      pending_processes_.erase(entry.first);
+      break;
+    }
+  }
+}
+
 }  // namespace atom
--- a/atom/browser/atom_browser_client.h
+++ b/atom/browser/atom_browser_client.h
@@ -5,40 +5,91 @@
 #ifndef ATOM_BROWSER_ATOM_BROWSER_CLIENT_H_
 #define ATOM_BROWSER_ATOM_BROWSER_CLIENT_H_

+#include <map>
 #include <string>
+#include <vector>

 #include "brightray/browser/browser_client.h"
+#include "content/public/browser/render_process_host_observer.h"
+
+namespace content {
+class QuotaPermissionContext;
+class ClientCertificateDelegate;
+}
+
+namespace net {
+class SSLCertRequestInfo;
+}

 namespace atom {

-class AtomBrowserClient : public brightray::BrowserClient {
+class AtomResourceDispatcherHostDelegate;
+
+class AtomBrowserClient : public brightray::BrowserClient,
+                          public content::RenderProcessHostObserver {
 public:
  AtomBrowserClient();
  virtual ~AtomBrowserClient();

+  using Delegate = content::ContentBrowserClient;
+  void set_delegate(Delegate* delegate) { delegate_ = delegate; }
+
+  // Don't force renderer process to restart for once.
+  static void SuppressRendererProcessRestartForOnce();
+  // Custom schemes to be registered to standard.
+  static void SetCustomSchemes(const std::vector<std::string>& schemes);
+
 protected:
  // content::ContentBrowserClient:
  void RenderProcessWillLaunch(content::RenderProcessHost* host) override;
  content::SpeechRecognitionManagerDelegate*
-      GetSpeechRecognitionManagerDelegate() override;
+      CreateSpeechRecognitionManagerDelegate() override;
  content::AccessTokenStore* CreateAccessTokenStore() override;
  void OverrideWebkitPrefs(content::RenderViewHost* render_view_host,
-                           const GURL& url,
                           content::WebPreferences* prefs) override;
-  bool ShouldSwapBrowsingInstancesForNavigation(
-      content::SiteInstance* site_instance,
-      const GURL& current_url,
-      const GURL& new_url) override;
  std::string GetApplicationLocale() override;
+  void OverrideSiteInstanceForNavigation(
+      content::BrowserContext* browser_context,
+      content::SiteInstance* current_instance,
+      const GURL& dest_url,
+      content::SiteInstance** new_instance) override;
  void AppendExtraCommandLineSwitches(base::CommandLine* command_line,
                                      int child_process_id) override;
+  void DidCreatePpapiPlugin(content::BrowserPpapiHost* browser_host) override;
+  content::QuotaPermissionContext* CreateQuotaPermissionContext() override;
+  void AllowCertificateError(
+      int render_process_id,
+      int render_frame_id,
+      int cert_error,
+      const net::SSLInfo& ssl_info,
+      const GURL& request_url,
+      content::ResourceType resource_type,
+      bool overridable,
+      bool strict_enforcement,
+      bool expired_previous_decision,
+      const base::Callback<void(bool)>& callback,
+      content::CertificateRequestResultType* request) override;
+  void SelectClientCertificate(
+      content::WebContents* web_contents,
+      net::SSLCertRequestInfo* cert_request_info,
+      scoped_ptr<content::ClientCertificateDelegate> delegate) override;
+  void ResourceDispatcherHostCreated() override;

- private:
+  // brightray::BrowserClient:
  brightray::BrowserMainParts* OverrideCreateBrowserMainParts(
      const content::MainFunctionParams&) override;

-  // The render process which would be swapped out soon.
-  content::RenderProcessHost* dying_render_process_;
+  // content::RenderProcessHostObserver:
+  void RenderProcessHostDestroyed(content::RenderProcessHost* host) override;
+
+ private:
+  // pending_render_process => current_render_process.
+  std::map<int, int> pending_processes_;
+
+  scoped_ptr<AtomResourceDispatcherHostDelegate>
+      resource_dispatcher_host_delegate_;
+
+  Delegate* delegate_;

  DISALLOW_COPY_AND_ASSIGN(AtomBrowserClient);
 };
--- a/atom/browser/atom_browser_context.cc
+++ b/atom/browser/atom_browser_context.cc
@@ -5,17 +5,33 @@
 #include "atom/browser/atom_browser_context.h"

 #include "atom/browser/atom_browser_main_parts.h"
+#include "atom/browser/atom_download_manager_delegate.h"
+#include "atom/browser/browser.h"
+#include "atom/browser/net/atom_cert_verifier.h"
+#include "atom/browser/net/atom_ssl_config_service.h"
 #include "atom/browser/net/atom_url_request_job_factory.h"
 #include "atom/browser/net/asar/asar_protocol_handler.h"
-#include "atom/browser/web_view/web_view_manager.h"
+#include "atom/browser/net/http_protocol_handler.h"
+#include "atom/browser/web_view_manager.h"
+#include "atom/common/atom_version.h"
+#include "atom/common/chrome_version.h"
+#include "atom/common/options_switches.h"
+#include "base/command_line.h"
+#include "base/files/file_path.h"
+#include "base/prefs/pref_registry_simple.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/worker_pool.h"
-#include "chrome/browser/browser_process.h"
+#include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/url_constants.h"
+#include "content/public/common/user_agent.h"
+#include "net/ftp/ftp_network_layer.h"
 #include "net/url_request/data_protocol_handler.h"
-#include "net/url_request/file_protocol_handler.h"
+#include "net/url_request/ftp_protocol_handler.h"
 #include "net/url_request/url_request_intercepting_job_factory.h"
+#include "net/url_request/url_request_context.h"
 #include "url/url_constants.h"

 using content::BrowserThread;
@@ -24,42 +40,91 @@ namespace atom {

 namespace {

-const char* kAsarScheme = "asar";
+class NoCacheBackend : public net::HttpCache::BackendFactory {
+  int CreateBackend(net::NetLog* net_log,
+                    scoped_ptr<disk_cache::Backend>* backend,
+                    const net::CompletionCallback& callback) override {
+    return net::ERR_FAILED;
+  }
+};
+
+std::string RemoveWhitespace(const std::string& str) {
+  std::string trimmed;
+  if (base::RemoveChars(str, " ", &trimmed))
+    return trimmed;
+  else
+    return str;
+}

 }  // namespace

-AtomBrowserContext::AtomBrowserContext()
-    : fake_browser_process_(new BrowserProcess),
-      job_factory_(new AtomURLRequestJobFactory) {
+AtomBrowserContext::AtomBrowserContext(const std::string& partition,
+                                       bool in_memory)
+    : brightray::BrowserContext(partition, in_memory),
+      cert_verifier_(new AtomCertVerifier),
+      job_factory_(new AtomURLRequestJobFactory),
+      allow_ntlm_everywhere_(false) {
 }

 AtomBrowserContext::~AtomBrowserContext() {
 }

+std::string AtomBrowserContext::GetUserAgent() {
+  Browser* browser = Browser::Get();
+  std::string name = RemoveWhitespace(browser->GetName());
+  std::string user_agent;
+  if (name == ATOM_PRODUCT_NAME) {
+    user_agent = "Chrome/" CHROME_VERSION_STRING " "
+                 ATOM_PRODUCT_NAME "/" ATOM_VERSION_STRING;
+  } else {
+    user_agent = base::StringPrintf(
+        "%s/%s Chrome/%s " ATOM_PRODUCT_NAME "/" ATOM_VERSION_STRING,
+        name.c_str(),
+        browser->GetVersion().c_str(),
+        CHROME_VERSION_STRING);
+  }
+  return content::BuildUserAgentFromProduct(user_agent);
+}
+
 net::URLRequestJobFactory* AtomBrowserContext::CreateURLRequestJobFactory(
    content::ProtocolHandlerMap* handlers,
    content::URLRequestInterceptorScopedVector* interceptors) {
  scoped_ptr<AtomURLRequestJobFactory> job_factory(job_factory_);

-  for (content::ProtocolHandlerMap::iterator it = handlers->begin();
-       it != handlers->end(); ++it)
-    job_factory->SetProtocolHandler(it->first, it->second.release());
+  for (auto& it : *handlers) {
+    job_factory->SetProtocolHandler(it.first,
+                                    make_scoped_ptr(it.second.release()));
+  }
  handlers->clear();

  job_factory->SetProtocolHandler(
-      url::kDataScheme, new net::DataProtocolHandler);
+      url::kDataScheme, make_scoped_ptr(new net::DataProtocolHandler));
  job_factory->SetProtocolHandler(
-      url::kFileScheme, new net::FileProtocolHandler(
+      url::kFileScheme, make_scoped_ptr(new asar::AsarProtocolHandler(
          BrowserThread::GetBlockingPool()->GetTaskRunnerWithShutdownBehavior(
-              base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)));
+              base::SequencedWorkerPool::SKIP_ON_SHUTDOWN))));
  job_factory->SetProtocolHandler(
-      kAsarScheme, new asar::AsarProtocolHandler(
-          BrowserThread::GetBlockingPool()->GetTaskRunnerWithShutdownBehavior(
-              base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)));
+      url::kHttpScheme,
+      make_scoped_ptr(new HttpProtocolHandler(url::kHttpScheme)));
+  job_factory->SetProtocolHandler(
+      url::kHttpsScheme,
+      make_scoped_ptr(new HttpProtocolHandler(url::kHttpsScheme)));
+  job_factory->SetProtocolHandler(
+      url::kWsScheme,
+      make_scoped_ptr(new HttpProtocolHandler(url::kWsScheme)));
+  job_factory->SetProtocolHandler(
+      url::kWssScheme,
+      make_scoped_ptr(new HttpProtocolHandler(url::kWssScheme)));
+
+  auto host_resolver =
+      url_request_context_getter()->GetURLRequestContext()->host_resolver();
+  job_factory->SetProtocolHandler(
+      url::kFtpScheme,
+      make_scoped_ptr(new net::FtpProtocolHandler(
+          new net::FtpNetworkLayer(host_resolver))));

  // Set up interceptors in the reverse order.
-  scoped_ptr<net::URLRequestJobFactory> top_job_factory =
-      job_factory.PassAs<net::URLRequestJobFactory>();
+  scoped_ptr<net::URLRequestJobFactory> top_job_factory = job_factory.Pass();
  content::URLRequestInterceptorScopedVector::reverse_iterator it;
  for (it = interceptors->rbegin(); it != interceptors->rend(); ++it)
    top_job_factory.reset(new net::URLRequestInterceptingJobFactory(
@@ -69,16 +134,65 @@ net::URLRequestJobFactory* AtomBrowserContext::CreateURLRequestJobFactory(
  return top_job_factory.release();
 }

+net::HttpCache::BackendFactory*
+AtomBrowserContext::CreateHttpCacheBackendFactory(
+    const base::FilePath& base_path) {
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kDisableHttpCache))
+    return new NoCacheBackend;
+  else
+    return brightray::BrowserContext::CreateHttpCacheBackendFactory(base_path);
+}
+
+content::DownloadManagerDelegate*
+AtomBrowserContext::GetDownloadManagerDelegate() {
+  if (!download_manager_delegate_.get()) {
+    auto download_manager = content::BrowserContext::GetDownloadManager(this);
+    download_manager_delegate_.reset(
+        new AtomDownloadManagerDelegate(download_manager));
+  }
+  return download_manager_delegate_.get();
+}
+
 content::BrowserPluginGuestManager* AtomBrowserContext::GetGuestManager() {
  if (!guest_manager_)
-    guest_manager_.reset(new WebViewManager(this));
+    guest_manager_.reset(new WebViewManager);
  return guest_manager_.get();
 }

-// static
-AtomBrowserContext* AtomBrowserContext::Get() {
-  return static_cast<AtomBrowserContext*>(
-      AtomBrowserMainParts::Get()->browser_context());
+net::CertVerifier* AtomBrowserContext::CreateCertVerifier() {
+  return cert_verifier_;
+}
+
+net::SSLConfigService* AtomBrowserContext::CreateSSLConfigService() {
+  return new AtomSSLConfigService;
+}
+
+void AtomBrowserContext::RegisterPrefs(PrefRegistrySimple* pref_registry) {
+  pref_registry->RegisterFilePathPref(prefs::kSelectFileLastDirectory,
+                                      base::FilePath());
+  pref_registry->RegisterFilePathPref(prefs::kDownloadDefaultDirectory,
+                                      base::FilePath());
+}
+
+bool AtomBrowserContext::AllowNTLMCredentialsForDomain(const GURL& origin) {
+  if (allow_ntlm_everywhere_)
+    return true;
+  return Delegate::AllowNTLMCredentialsForDomain(origin);
+}
+
+void AtomBrowserContext::AllowNTLMCredentialsForAllDomains(bool should_allow) {
+  allow_ntlm_everywhere_ = should_allow;
 }

 }  // namespace atom
+
+namespace brightray {
+
+// static
+scoped_refptr<BrowserContext> BrowserContext::Create(
+    const std::string& partition, bool in_memory) {
+  return make_scoped_refptr(new atom::AtomBrowserContext(partition, in_memory));
+}
+
+}  // namespace brightray
--- a/atom/browser/atom_browser_context.h
+++ b/atom/browser/atom_browser_context.h
@@ -5,39 +5,55 @@
 #ifndef ATOM_BROWSER_ATOM_BROWSER_CONTEXT_H_
 #define ATOM_BROWSER_ATOM_BROWSER_CONTEXT_H_

-#include "brightray/browser/browser_context.h"
+#include <string>

-class BrowserProcess;
+#include "brightray/browser/browser_context.h"

 namespace atom {

+class AtomDownloadManagerDelegate;
+class AtomCertVerifier;
 class AtomURLRequestJobFactory;
 class WebViewManager;

 class AtomBrowserContext : public brightray::BrowserContext {
 public:
-  AtomBrowserContext();
-  virtual ~AtomBrowserContext();
-
-  // Returns the browser context singleton.
-  static AtomBrowserContext* Get();
+  AtomBrowserContext(const std::string& partition, bool in_memory);
+  ~AtomBrowserContext() override;

  // brightray::URLRequestContextGetter::Delegate:
-  virtual net::URLRequestJobFactory* CreateURLRequestJobFactory(
+  std::string GetUserAgent() override;
+  net::URLRequestJobFactory* CreateURLRequestJobFactory(
      content::ProtocolHandlerMap* handlers,
      content::URLRequestInterceptorScopedVector* interceptors) override;
+  net::HttpCache::BackendFactory* CreateHttpCacheBackendFactory(
+      const base::FilePath& base_path) override;
+  net::CertVerifier* CreateCertVerifier() override;
+  net::SSLConfigService* CreateSSLConfigService() override;
+  bool AllowNTLMCredentialsForDomain(const GURL& auth_origin) override;

  // content::BrowserContext:
-  virtual content::BrowserPluginGuestManager* GetGuestManager() override;
+  content::DownloadManagerDelegate* GetDownloadManagerDelegate() override;
+  content::BrowserPluginGuestManager* GetGuestManager() override;
+
+  // brightray::BrowserContext:
+  void RegisterPrefs(PrefRegistrySimple* pref_registry) override;
+
+  void AllowNTLMCredentialsForAllDomains(bool should_allow);
+
+  AtomCertVerifier* cert_verifier() const { return cert_verifier_; }

  AtomURLRequestJobFactory* job_factory() const { return job_factory_; }

 private:
-  // A fake BrowserProcess object that used to feed the source code from chrome.
-  scoped_ptr<BrowserProcess> fake_browser_process_;
+  scoped_ptr<AtomDownloadManagerDelegate> download_manager_delegate_;
  scoped_ptr<WebViewManager> guest_manager_;

-  AtomURLRequestJobFactory* job_factory_;  // Weak reference.
+  // Managed by brightray::BrowserContext.
+  AtomCertVerifier* cert_verifier_;
+  AtomURLRequestJobFactory* job_factory_;
+
+  bool allow_ntlm_everywhere_;

  DISALLOW_COPY_AND_ASSIGN(AtomBrowserContext);
 };
--- a/atom/browser/atom_browser_main_parts.cc
+++ b/atom/browser/atom_browser_main_parts.cc
@@ -4,29 +4,39 @@

 #include "atom/browser/atom_browser_main_parts.h"

+#include "atom/browser/api/trackable_object.h"
 #include "atom/browser/atom_browser_client.h"
 #include "atom/browser/atom_browser_context.h"
+#include "atom/browser/bridge_task_runner.h"
 #include "atom/browser/browser.h"
 #include "atom/browser/javascript_environment.h"
 #include "atom/browser/node_debugger.h"
 #include "atom/common/api/atom_bindings.h"
 #include "atom/common/node_bindings.h"
+#include "atom/common/node_includes.h"
 #include "base/command_line.h"
+#include "base/thread_task_runner_handle.h"
+#include "chrome/browser/browser_process.h"
 #include "v8/include/v8-debug.h"

 #if defined(USE_X11)
 #include "chrome/browser/ui/libgtk2ui/gtk2_util.h"
 #endif

-#include "atom/common/node_includes.h"
-
 namespace atom {

+template<typename T>
+void Erase(T* container, typename T::iterator iter) {
+  container->erase(iter);
+}
+
 // static
 AtomBrowserMainParts* AtomBrowserMainParts::self_ = NULL;

 AtomBrowserMainParts::AtomBrowserMainParts()
-    : browser_(new Browser),
+    : fake_browser_process_(new BrowserProcess),
+      exit_code_(nullptr),
+      browser_(new Browser),
      node_bindings_(NodeBindings::Create(true)),
      atom_bindings_(new AtomBindings),
      gc_timer_(true, true) {
@@ -43,19 +53,38 @@ AtomBrowserMainParts* AtomBrowserMainParts::Get() {
  return self_;
 }

-brightray::BrowserContext* AtomBrowserMainParts::CreateBrowserContext() {
-  return new AtomBrowserContext();
+bool AtomBrowserMainParts::SetExitCode(int code) {
+  if (!exit_code_)
+    return false;
+
+  *exit_code_ = code;
+  return true;
+}
+
+base::Closure AtomBrowserMainParts::RegisterDestructionCallback(
+    const base::Closure& callback) {
+  auto iter = destructors_.insert(destructors_.end(), callback);
+  return base::Bind(&Erase<std::list<base::Closure>>, &destructors_, iter);
+}
+
+void AtomBrowserMainParts::PreEarlyInitialization() {
+  brightray::BrowserMainParts::PreEarlyInitialization();
+#if defined(OS_POSIX)
+  HandleSIGCHLD();
+#endif
 }

 void AtomBrowserMainParts::PostEarlyInitialization() {
  brightray::BrowserMainParts::PostEarlyInitialization();

-#if defined(USE_X11)
-  SetDPIFromGSettings();
-#endif
+  // Temporary set the bridge_task_runner_ as current thread's task runner,
+  // so we can fool gin::PerIsolateData to use it as its task runner, instead
+  // of getting current message loop's task runner, which is null for now.
+  bridge_task_runner_ = new BridgeTaskRunner;
+  base::ThreadTaskRunnerHandle handle(bridge_task_runner_);

-  // The ProxyResolverV8 has setup a complete V8 environment, in order to avoid
-  // conflicts we only initialize our V8 environment after that.
+  // The ProxyResolverV8 has setup a complete V8 environment, in order to
+  // avoid conflicts we only initialize our V8 environment after that.
  js_env_.reset(new JavascriptEnvironment);

  node_bindings_->Initialize();
@@ -72,6 +101,9 @@ void AtomBrowserMainParts::PostEarlyInitialization() {

  // Add atom-shell extended APIs.
  atom_bindings_->BindTo(js_env_->isolate(), global_env->process_object());
+
+  // Load everything.
+  node_bindings_->LoadEnvironment(global_env);
 }

 void AtomBrowserMainParts::PreMainMessageLoopRun() {
@@ -88,9 +120,11 @@ void AtomBrowserMainParts::PreMainMessageLoopRun() {
                 1000));

  brightray::BrowserMainParts::PreMainMessageLoopRun();
+  bridge_task_runner_->MessageLoopIsReady();
+  bridge_task_runner_ = nullptr;

 #if defined(USE_X11)
-  libgtk2ui::GtkInitFromCommandLine(*CommandLine::ForCurrentProcess());
+  libgtk2ui::GtkInitFromCommandLine(*base::CommandLine::ForCurrentProcess());
 #endif

 #if !defined(OS_MACOSX)
@@ -100,4 +134,43 @@ void AtomBrowserMainParts::PreMainMessageLoopRun() {
 #endif
 }

+bool AtomBrowserMainParts::MainMessageLoopRun(int* result_code) {
+  exit_code_ = result_code;
+  return brightray::BrowserMainParts::MainMessageLoopRun(result_code);
+}
+
+void AtomBrowserMainParts::PostMainMessageLoopStart() {
+  brightray::BrowserMainParts::PostMainMessageLoopStart();
+#if defined(OS_POSIX)
+  HandleShutdownSignals();
+#endif
+}
+
+void AtomBrowserMainParts::PostMainMessageLoopRun() {
+  brightray::BrowserMainParts::PostMainMessageLoopRun();
+
+#if defined(OS_MACOSX)
+  FreeAppDelegate();
+#endif
+
+  // Make sure destruction callbacks are called before message loop is
+  // destroyed, otherwise some objects that need to be deleted on IO thread
+  // won't be freed.
+  // We don't use ranged for loop because iterators are getting invalided when
+  // the callback runs.
+  for (auto iter = destructors_.begin(); iter != destructors_.end();) {
+    base::Closure& callback = *iter;
+    ++iter;
+    callback.Run();
+  }
+
+  // Destroy JavaScript environment immediately after running destruction
+  // callbacks.
+  gc_timer_.Stop();
+  node_debugger_.reset();
+  atom_bindings_.reset();
+  node_bindings_.reset();
+  js_env_.reset();
+}
+
 }  // namespace atom
--- a/atom/browser/atom_browser_main_parts.h
+++ b/atom/browser/atom_browser_main_parts.h
@@ -5,8 +5,15 @@
 #ifndef ATOM_BROWSER_ATOM_BROWSER_MAIN_PARTS_H_
 #define ATOM_BROWSER_ATOM_BROWSER_MAIN_PARTS_H_

+#include <list>
+#include <string>
+
+#include "base/callback.h"
 #include "base/timer/timer.h"
 #include "brightray/browser/browser_main_parts.h"
+#include "content/public/browser/browser_context.h"
+
+class BrowserProcess;

 namespace atom {

@@ -15,6 +22,7 @@ class Browser;
 class JavascriptEnvironment;
 class NodeBindings;
 class NodeDebugger;
+class BridgeTaskRunner;

 class AtomBrowserMainParts : public brightray::BrowserMainParts {
 public:
@@ -23,25 +31,49 @@ class AtomBrowserMainParts : public brightray::BrowserMainParts {

  static AtomBrowserMainParts* Get();

+  // Sets the exit code, will fail if the the message loop is not ready.
+  bool SetExitCode(int code);
+
+  // Register a callback that should be destroyed before JavaScript environment
+  // gets destroyed.
+  // Returns a closure that can be used to remove |callback| from the list.
+  base::Closure RegisterDestructionCallback(const base::Closure& callback);
+
  Browser* browser() { return browser_.get(); }

 protected:
-  // Implementations of brightray::BrowserMainParts.
-  virtual brightray::BrowserContext* CreateBrowserContext() OVERRIDE;
-
-  // Implementations of content::BrowserMainParts.
-  virtual void PostEarlyInitialization() OVERRIDE;
-  virtual void PreMainMessageLoopRun() OVERRIDE;
+  // content::BrowserMainParts:
+  void PreEarlyInitialization() override;
+  void PostEarlyInitialization() override;
+  void PreMainMessageLoopRun() override;
+  bool MainMessageLoopRun(int* result_code) override;
+  void PostMainMessageLoopStart() override;
+  void PostMainMessageLoopRun() override;
 #if defined(OS_MACOSX)
-  virtual void PreMainMessageLoopStart() OVERRIDE;
-  virtual void PostDestroyThreads() OVERRIDE;
+  void PreMainMessageLoopStart() override;
 #endif

 private:
-#if defined(USE_X11)
-  void SetDPIFromGSettings();
+#if defined(OS_POSIX)
+  // Set signal handlers.
+  void HandleSIGCHLD();
+  void HandleShutdownSignals();
 #endif

+#if defined(OS_MACOSX)
+  void FreeAppDelegate();
+#endif
+
+  // A fake BrowserProcess object that used to feed the source code from chrome.
+  scoped_ptr<BrowserProcess> fake_browser_process_;
+
+  // The gin::PerIsolateData requires a task runner to create, so we feed it
+  // with a task runner that will post all work to main loop.
+  scoped_refptr<BridgeTaskRunner> bridge_task_runner_;
+
+  // Pointer to exit code.
+  int* exit_code_;
+
  scoped_ptr<Browser> browser_;
  scoped_ptr<JavascriptEnvironment> js_env_;
  scoped_ptr<NodeBindings> node_bindings_;
@@ -50,6 +82,9 @@ class AtomBrowserMainParts : public brightray::BrowserMainParts {

  base::Timer gc_timer_;

+  // List of callbacks should be executed before destroying JS env.
+  std::list<base::Closure> destructors_;
+
  static AtomBrowserMainParts* self_;

  DISALLOW_COPY_AND_ASSIGN(AtomBrowserMainParts);
--- a/atom/browser/atom_browser_main_parts_linux.cc
+++ b/atom/browser/atom_browser_main_parts_linux.cc
@@ -1,82 +0,0 @@
-// Copyright (c) 2014 GitHub, Inc.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#include "atom/browser/atom_browser_main_parts.h"
-
-#include "base/command_line.h"
-#include "base/strings/string_number_conversions.h"
-#include "library_loaders/libgio.h"
-#include "ui/gfx/switches.h"
-
-namespace atom {
-
-namespace {
-
-const char* kInterfaceSchema = "org.gnome.desktop.interface";
-const char* kScaleFactor = "scaling-factor";
-
-bool SchemaExists(const LibGioLoader& libgio_loader, const char* schema_name) {
-  const gchar* const* schemas = libgio_loader.g_settings_list_schemas();
-  while (*schemas) {
-    if (strcmp(schema_name, static_cast<const char*>(*schemas)) == 0)
-      return true;
-    schemas++;
-  }
-  return false;
-}
-
-bool KeyExists(const LibGioLoader& libgio_loader, GSettings* client,
-               const char* key) {
-  gchar** keys = libgio_loader.g_settings_list_keys(client);
-  if (!keys)
-    return false;
-
-  gchar** iter = keys;
-  while (*iter) {
-    if (strcmp(*iter, key) == 0)
-      break;
-    iter++;
-  }
-
-  bool exists = *iter != NULL;
-  g_strfreev(keys);
-  return exists;
-}
-
-void GetDPIFromGSettings(guint* scale_factor) {
-  LibGioLoader libgio_loader;
-
-  // Try also without .0 at the end; on some systems this may be required.
-  if (!libgio_loader.Load("libgio-2.0.so.0") &&
-      !libgio_loader.Load("libgio-2.0.so")) {
-    VLOG(1) << "Cannot load gio library. Will fall back to gconf.";
-    return;
-  }
-
-  GSettings* client = nullptr;
-  if (!SchemaExists(libgio_loader, kInterfaceSchema) ||
-      !(client = libgio_loader.g_settings_new(kInterfaceSchema))) {
-    VLOG(1) << "Cannot create gsettings client.";
-    return;
-  }
-
-  if (KeyExists(libgio_loader, client, kScaleFactor))
-    *scale_factor = libgio_loader.g_settings_get_uint(client, kScaleFactor);
-
-  g_object_unref(client);
-}
-
-}  // namespace
-
-void AtomBrowserMainParts::SetDPIFromGSettings() {
-  guint scale_factor = 1;
-  GetDPIFromGSettings(&scale_factor);
-  if (scale_factor == 0)
-    scale_factor = 1;
-
-  base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
-      switches::kForceDeviceScaleFactor, base::UintToString(scale_factor));
-}
-
-}  // namespace atom
--- a/atom/browser/atom_browser_main_parts_mac.mm
+++ b/atom/browser/atom_browser_main_parts_mac.mm
@@ -4,12 +4,11 @@

 #include "atom/browser/atom_browser_main_parts.h"

-#import "atom/browser/mac/atom_application.h"
-#import "atom/browser/mac/atom_application_delegate.h"
-#include "base/files/file_path.h"
-#import "base/mac/foundation_util.h"
+#include "atom/browser/mac/atom_application.h"
+#include "atom/browser/mac/atom_application_delegate.h"
+#include "base/mac/bundle_locations.h"
+#include "base/mac/foundation_util.h"
 #include "ui/base/l10n/l10n_util_mac.h"
-#import "vendor/brightray/common/mac/main_application_bundle.h"

 namespace atom {

@@ -23,12 +22,7 @@ void AtomBrowserMainParts::PreMainMessageLoopStart() {
  AtomApplicationDelegate* delegate = [[AtomApplicationDelegate alloc] init];
  [NSApp setDelegate:(id<NSFileManagerDelegate>)delegate];

-  base::FilePath frameworkPath = brightray::MainApplicationBundlePath()
-      .Append("Contents")
-      .Append("Frameworks")
-      .Append("Atom Framework.framework");
-  NSBundle* frameworkBundle = [NSBundle
-       bundleWithPath:base::mac::FilePathToNSString(frameworkPath)];
+  NSBundle* frameworkBundle = base::mac::FrameworkBundle();
  NSNib* mainNib = [[NSNib alloc] initWithNibNamed:@"MainMenu"
                                            bundle:frameworkBundle];
  [mainNib instantiateWithOwner:application topLevelObjects:nil];
@@ -40,7 +34,7 @@ void AtomBrowserMainParts::PreMainMessageLoopStart() {
      setObject:@"NO" forKey:@"NSTreatUnknownArgumentsAsOpen"];
 }

-void AtomBrowserMainParts::PostDestroyThreads() {
+void AtomBrowserMainParts::FreeAppDelegate() {
  [[NSApp delegate] release];
  [NSApp setDelegate:nil];
 }
--- a/Show More
+++ b/Show More