Bump v6.0.0-beta.4

Fixes #18236.

Our options parsing for dialogs correctly set options if no window was passed, but then did not correctly set the window back to null and it was then left as an object equal to options. This caused a crash when passed to native code as there is no valid circumstance where the window would be an object.

.circleci/config.yml

@@ -176,6 +176,22 @@ step-restore-brew-cache: &step-restore-brew-cache
     keys:
       - v1-brew-cache-{{ arch }}
 
+step-get-more-space-on-mac: &step-get-more-space-on-mac
+  run:
+    name: Free up space on MacOS
+    command: |
+      if [ "`uname`" == "Darwin" ]; then
+        sudo rm -rf /Library/Developer/CoreSimulator
+      fi
+
+step-delete-git-directories: &step-delete-git-directories
+  run:
+    name: Delete src/.git directory on MacOS to free space
+    command: |
+      if [ "`uname`" == "Darwin" ]; then
+        sudo rm -rf src/.git
+      fi
+
 # On macOS the npm install command during gclient sync was run on a linux
 # machine and therefore installed a slightly different set of dependencies
 # Notably "fsevents" is a macOS only dependency, we rerun npm install once
@@ -535,6 +551,7 @@ steps-checkout: &steps-checkout
     - *step-depot-tools-get
     - *step-depot-tools-add-to-path
     - *step-restore-brew-cache
+    - *step-get-more-space-on-mac
     - *step-install-gnutar-on-mac
 
     - restore_cache:
@@ -651,9 +668,11 @@ steps-electron-build-for-publish: &steps-electron-build-for-publish
     - *step-depot-tools-get
     - *step-depot-tools-add-to-path
     - *step-restore-brew-cache
+    - *step-get-more-space-on-mac
     - *step-gclient-sync
     - *step-setup-env-for-build
     - *step-gn-gen-default
+    - *step-delete-git-directories
 
     # Electron app
     - *step-electron-build

.eslintrc.json

@@ -16,7 +16,8 @@
     }],
     "prefer-const": ["error", {
       "destructuring": "all"
-    }]
+    }],
+    "node/no-deprecated-api": 0
   },
   "parserOptions": {
     "ecmaVersion": 6,

.gitignore

@@ -37,7 +37,7 @@
 /vendor/pyyaml
 node_modules/
 SHASUMS256.txt
-**/yarn.lock
+**/package-lock.json
 compile_commands.json
 .envrc
 

BUILD.gn

@@ -64,7 +64,7 @@ config("branding") {
 npm_action("build_electron_definitions") {
   script = "gn-typescript-definitions"
   args = [ rebase_path("$target_gen_dir/tsc/typings/electron.d.ts") ]
-  inputs = auto_filenames.api_docs + [ "package-lock.json" ]
+  inputs = auto_filenames.api_docs + [ "yarn.lock" ]
 
   outputs = [
     "$target_gen_dir/tsc/typings/electron.d.ts",
@@ -547,6 +547,7 @@ static_library("electron_lib") {
     deps += [
       "//third_party/crashpad/crashpad/client",
       "//ui/accelerated_widget_mac",
+      "//ui/views_bridge_mac",
     ]
     sources += [
       "atom/browser/ui/views/autofill_popup_view.cc",
@@ -1067,6 +1068,7 @@ template("dist_zip") {
                              "deps",
                              "data_deps",
                              "data",
+                             "testonly",
                            ])
     write_runtime_deps = _runtime_deps_file
   }
@@ -1076,7 +1078,11 @@ template("dist_zip") {
     deps = [
       ":$_runtime_deps_target",
     ]
-    forward_variables_from(invoker, [ "outputs" ])
+    forward_variables_from(invoker,
+                           [
+                             "outputs",
+                             "testonly",
+                           ])
     args = rebase_path(outputs + [ _runtime_deps_file ], root_build_dir) + [
              target_cpu,
              target_os,
@@ -1144,6 +1150,7 @@ dist_zip("electron_ffmpeg_zip") {
 }
 
 dist_zip("electron_chromedriver_zip") {
+  testonly = true
   data_deps = [
     "//chrome/test/chromedriver",
     ":licenses",

DEPS

@@ -10,9 +10,9 @@ gclient_gn_args = [
 
 vars = {
   'chromium_version':
-    '75.0.3740.3',
+    '76.0.3783.1',
   'node_version':
-    '2dc0f8811b2b295c08d797b8a11b030234c98502',
+    'a86a4a160dc520c61a602c949a32a1bc4c0fc633',
 
   'boto_version': 'f7574aa6cc2c819430c1f05e9a1a1a666ef8169b',
   'pyyaml_version': '3.12',
@@ -24,6 +24,9 @@ vars = {
   'requests_git': 'https://github.com/kennethreitz',
   'yaml_git': 'https://github.com/yaml',
 
+  # KEEP IN SYNC WITH spec-runner FILE
+  'yarn_version': '1.15.2',
+
   # To be able to build clean Chromium from sources.
   'apply_patches': True,
 
@@ -107,7 +110,7 @@ hooks = [
     'action': [
       'python',
       '-c',
-      'import os, subprocess; os.chdir(os.path.join("src", "electron")); subprocess.check_call(["python", "script/lib/npm.py", "install"]);',
+      'import os, subprocess; os.chdir(os.path.join("src", "electron")); subprocess.check_call(["python", "script/lib/npx.py", "yarn@' + (Var("yarn_version")) + '", "install", "--frozen-lockfile"]);',
     ],
   },
   {

ELECTRON_VERSION

@@ -1 +1 @@
-6.0.0-nightly.20190404
+6.0.0-beta.4

appveyor.yml

@@ -25,11 +25,12 @@
 
 version: 1.0.{build}
 build_cloud: libcc-20
-image: libcc-20-vs2017-15.7.4
+image: libcc-20-vs2017-15.9
 environment:
   GIT_CACHE_PATH: C:\Users\electron\libcc_cache
   DISABLE_CRASH_REPORTER_TESTS: true
   ELECTRON_OUT_DIR: Default
+  ELECTRON_ENABLE_STACK_DUMPING: 1
 build_script:
   - ps: >-
       if(($env:APPVEYOR_PULL_REQUEST_HEAD_REPO_NAME -split "/")[0] -eq ($env:APPVEYOR_REPO_NAME -split "/")[0]) {
@@ -38,7 +39,7 @@ build_script:
   - echo "Building $env:GN_CONFIG build"
   - git config --global core.longpaths true
   - cd ..
-  - md src
+  - ps: if (Test-Path src\electron) { Remove-Item src\electron -Recurse }
   - ps: Move-Item $env:APPVEYOR_BUILD_FOLDER -Destination src\electron
   - ps: $env:CHROMIUM_BUILDTOOLS_PATH="$pwd\src\buildtools"
   - ps: $env:SCCACHE_PATH="$pwd\src\electron\external_binaries\sccache.exe"
@@ -52,7 +53,7 @@ build_script:
       --unmanaged
       %GCLIENT_EXTRA_ARGS%
       "https://github.com/electron/electron"
-  - gclient sync --with_branch_heads --with_tags
+  - gclient sync --with_branch_heads --with_tags --reset
   - cd src
   - ps: $env:BUILD_CONFIG_PATH="//electron/build/args/%GN_CONFIG%.gn"
   - gn gen out/Default "--args=import(\"%BUILD_CONFIG_PATH%\") %GN_EXTRA_ARGS%"

atom/app/node_main.cc

@@ -18,7 +18,7 @@
 #include "atom/common/node_includes.h"
 #include "base/command_line.h"
 #include "base/feature_list.h"
-#include "base/task/task_scheduler/task_scheduler.h"
+#include "base/task/thread_pool/thread_pool.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "gin/array_buffer.h"
 #include "gin/public/isolate_holder.h"
@@ -48,7 +48,7 @@ int NodeMain(int argc, char* argv[]) {
     gin::V8Initializer::LoadV8Natives();
 
     // V8 requires a task scheduler apparently
-    base::TaskScheduler::CreateAndStartWithDefaultParams("Electron");
+    base::ThreadPool::CreateAndStartWithDefaultParams("Electron");
 
     // Initialize gin::IsolateHolder.
     JavascriptEnvironment gin_env(loop);
@@ -101,6 +101,7 @@ int NodeMain(int argc, char* argv[]) {
       }
     } while (more == true);
 
+    node_debugger.Stop();
     exit_code = node::EmitExit(env);
     node::RunAtExit(env);
     gin_env.platform()->DrainTasks(env->isolate());
@@ -112,10 +113,10 @@ int NodeMain(int argc, char* argv[]) {
 
   // According to "src/gin/shell/gin_main.cc":
   //
-  // gin::IsolateHolder waits for tasks running in TaskScheduler in its
+  // gin::IsolateHolder waits for tasks running in ThreadPool in its
-  // destructor and thus must be destroyed before TaskScheduler starts skipping
+  // destructor and thus must be destroyed before ThreadPool starts skipping
   // CONTINUE_ON_SHUTDOWN tasks.
-  base::TaskScheduler::GetInstance()->Shutdown();
+  base::ThreadPool::GetInstance()->Shutdown();
 
   v8::V8::Dispose();
 

atom/browser/api/atom_api_app.cc

@@ -84,6 +84,7 @@ struct Converter<Browser::UserTask> {
       return false;
     dict.Get("arguments", &(out->arguments));
     dict.Get("description", &(out->description));
+    dict.Get("workingDirectory", &(out->working_dir));
     return true;
   }
 };
@@ -157,6 +158,7 @@ struct Converter<JumpListItem> {
 
         dict.Get("args", &(out->arguments));
         dict.Get("description", &(out->description));
+        dict.Get("workingDirectory", &(out->working_dir));
         return true;
 
       case JumpListItem::Type::SEPARATOR:
@@ -183,6 +185,7 @@ struct Converter<JumpListItem> {
         dict.Set("iconPath", val.icon_path);
         dict.Set("iconIndex", val.icon_index);
         dict.Set("description", val.description);
+        dict.Set("workingDirectory", val.working_dir);
         break;
 
       case JumpListItem::Type::SEPARATOR:
@@ -529,9 +532,9 @@ int ImportIntoCertStore(CertificateManagerModel* model,
 }
 #endif
 
-void OnIconDataAvailable(util::Promise promise, gfx::Image* icon) {
+void OnIconDataAvailable(util::Promise promise, gfx::Image icon) {
-  if (icon && !icon->IsEmpty()) {
+  if (!icon.IsEmpty()) {
-    promise.Resolve(*icon);
+    promise.Resolve(icon);
   } else {
     promise.RejectWithErrorMessage("Failed to get file icon.");
   }
@@ -672,7 +675,7 @@ void App::OnLogin(scoped_refptr<LoginHandler> login_handler,
   if (web_contents) {
     prevent_default = Emit(
         "login", WebContents::FromOrCreate(isolate(), web_contents),
-        request_details, login_handler->auth_info(),
+        request_details, *login_handler->auth_info(),
         base::Bind(&PassLoginInformation, base::RetainedRef(login_handler)));
   }
 
@@ -1056,7 +1059,7 @@ Browser::LoginItemSettings App::GetLoginItemSettings(mate::Arguments* args) {
 
 #if defined(USE_NSS_CERTS)
 void App::ImportCertificate(const base::DictionaryValue& options,
-                            const net::CompletionCallback& callback) {
+                            net::CompletionRepeatingCallback callback) {
   auto browser_context = AtomBrowserContext::From("", false);
   if (!certificate_manager_model_) {
     auto copy = base::DictionaryValue::From(
@@ -1069,17 +1072,17 @@ void App::ImportCertificate(const base::DictionaryValue& options,
   }
 
   int rv = ImportIntoCertStore(certificate_manager_model_.get(), options);
-  callback.Run(rv);
+  std::move(callback).Run(rv);
 }
 
 void App::OnCertificateManagerModelCreated(
     std::unique_ptr<base::DictionaryValue> options,
-    const net::CompletionCallback& callback,
+    net::CompletionOnceCallback callback,
     std::unique_ptr<CertificateManagerModel> model) {
   certificate_manager_model_ = std::move(model);
   int rv =
       ImportIntoCertStore(certificate_manager_model_.get(), *(options.get()));
-  callback.Run(rv);
+  std::move(callback).Run(rv);
 }
 #endif
 

atom/browser/api/atom_api_app.h

@@ -27,7 +27,8 @@
 #include "content/public/browser/render_process_host.h"
 #include "native_mate/dictionary.h"
 #include "native_mate/handle.h"
-#include "net/base/completion_callback.h"
+#include "net/base/completion_once_callback.h"
+#include "net/base/completion_repeating_callback.h"
 #include "net/ssl/client_cert_identity.h"
 
 #if defined(USE_NSS_CERTS)
@@ -78,7 +79,7 @@ class App : public AtomBrowserClient::Delegate,
 #if defined(USE_NSS_CERTS)
   void OnCertificateManagerModelCreated(
       std::unique_ptr<base::DictionaryValue> options,
-      const net::CompletionCallback& callback,
+      net::CompletionOnceCallback callback,
       std::unique_ptr<CertificateManagerModel> model);
 #endif
 
@@ -199,7 +200,7 @@ class App : public AtomBrowserClient::Delegate,
   Browser::LoginItemSettings GetLoginItemSettings(mate::Arguments* args);
 #if defined(USE_NSS_CERTS)
   void ImportCertificate(const base::DictionaryValue& options,
-                         const net::CompletionCallback& callback);
+                         net::CompletionRepeatingCallback callback);
 #endif
   v8::Local<v8::Promise> GetFileIcon(const base::FilePath& path,
                                      mate::Arguments* args);

atom/browser/api/atom_api_auto_updater.cc

@@ -64,11 +64,17 @@ void AutoUpdater::OnError(const std::string& message,
   auto errorObject =
       error->ToObject(isolate()->GetCurrentContext()).ToLocalChecked();
 
+  auto context = isolate()->GetCurrentContext();
+
   // add two new params for better error handling
-  errorObject->Set(mate::StringToV8(isolate(), "code"),
+  errorObject
-                   v8::Integer::New(isolate(), code));
+      ->Set(context, mate::StringToV8(isolate(), "code"),
-  errorObject->Set(mate::StringToV8(isolate(), "domain"),
+            v8::Integer::New(isolate(), code))
-                   mate::StringToV8(isolate(), domain));
+      .Check();
+  errorObject
+      ->Set(context, mate::StringToV8(isolate(), "domain"),
+            mate::StringToV8(isolate(), domain))
+      .Check();
 
   mate::EmitEvent(isolate(), GetWrapper(), "error", errorObject, message);
 }

atom/browser/api/atom_api_cookies.cc

@@ -283,7 +283,7 @@ void SetCookieOnIO(scoped_refptr<net::URLRequestContextGetter> getter,
       net::CanonicalCookie::CreateSanitizedCookie(
           url, name, value, domain, path, creation_time, expiration_time,
           last_access_time, secure, http_only,
-          net::CookieSameSite::DEFAULT_MODE, net::COOKIE_PRIORITY_DEFAULT));
+          net::CookieSameSite::NO_RESTRICTION, net::COOKIE_PRIORITY_DEFAULT));
   auto completion_callback = base::BindOnce(OnSetCookie, std::move(promise));
   if (!canonical_cookie || !canonical_cookie->IsCanonical()) {
     std::move(completion_callback)

atom/browser/api/atom_api_desktop_capturer.cc

@@ -165,8 +165,12 @@ void DesktopCapturer::UpdateSourcesList(DesktopMediaList* list) {
       std::vector<std::string> device_names;
       // Crucially, this list of device names will be in the same order as
       // |media_list_sources|.
-      webrtc::DxgiDuplicatorController::Instance()->GetDeviceNames(
+      if (!webrtc::DxgiDuplicatorController::Instance()->GetDeviceNames(
-          &device_names);
+              &device_names)) {
+        Emit("error", "Failed to get sources.");
+        return;
+      }
+
       int device_name_index = 0;
       for (auto& source : screen_sources) {
         const auto& device_name = device_names[device_name_index++];
@@ -176,13 +180,13 @@ void DesktopCapturer::UpdateSourcesList(DesktopMediaList* list) {
         const int64_t device_id =
             display::win::DisplayInfo::DeviceIdFromDeviceName(
                 wide_device_name.c_str());
-        source.display_id = base::Int64ToString(device_id);
+        source.display_id = base::NumberToString(device_id);
       }
     }
 #elif defined(OS_MACOSX)
     // On Mac, the IDs across the APIs match.
     for (auto& source : screen_sources) {
-      source.display_id = base::Int64ToString(source.media_list_source.id.id);
+      source.display_id = base::NumberToString(source.media_list_source.id.id);
     }
 #endif  // defined(OS_WIN)
     // TODO(ajmacd): Add Linux support. The IDs across APIs differ but Chrome
@@ -222,7 +226,7 @@ void Initialize(v8::Local<v8::Object> exports,
                 void* priv) {
   v8::Isolate* isolate = context->GetIsolate();
   mate::Dictionary dict(isolate, exports);
-  dict.Set("desktopCapturer", atom::api::DesktopCapturer::Create(isolate));
+  dict.SetMethod("createDesktopCapturer", &atom::api::DesktopCapturer::Create);
 }
 
 }  // namespace

atom/browser/api/atom_api_menu_views.cc

@@ -52,7 +52,7 @@ void MenuViews::PopupAt(TopLevelWindow* window,
       std::make_unique<MenuRunner>(model(), flags, close_callback);
   menu_runners_[window_id]->RunMenuAt(
       native_window->widget(), NULL, gfx::Rect(location, gfx::Size()),
-      views::MENU_ANCHOR_TOPLEFT, ui::MENU_SOURCE_MOUSE);
+      views::MenuAnchorPosition::kTopLeft, ui::MENU_SOURCE_MOUSE);
 }
 
 void MenuViews::ClosePopupAt(int32_t window_id) {

atom/browser/api/atom_api_session.cc

@@ -48,6 +48,7 @@
 #include "content/public/browser/storage_partition.h"
 #include "native_mate/dictionary.h"
 #include "native_mate/object_template_builder.h"
+#include "net/base/completion_repeating_callback.h"
 #include "net/base/load_flags.h"
 #include "net/disk_cache/disk_cache.h"
 #include "net/dns/host_cache.h"  // nogncheck
@@ -268,7 +269,7 @@ void DoCacheActionInIO(
   // Call GetBackend and make the backend's ptr accessable in OnGetBackend.
   using BackendPtr = disk_cache::Backend*;
   auto** backend_ptr = new BackendPtr(nullptr);
-  net::CompletionCallback on_get_backend =
+  net::CompletionRepeatingCallback on_get_backend =
       base::Bind(&OnGetBackend, base::Owned(backend_ptr), action,
                  util::CopyablePromise(promise));
   int rv = http_cache->GetBackend(backend_ptr, on_get_backend);
@@ -365,8 +366,9 @@ void DestroyGlobalHandle(v8::Isolate* isolate,
   v8::HandleScope handle_scope(isolate);
   if (!global_handle.IsEmpty()) {
     v8::Local<v8::Value> local_handle = global_handle.Get(isolate);
-    if (local_handle->IsObject()) {
+    v8::Local<v8::Object> object;
-      v8::Local<v8::Object> object = local_handle->ToObject(isolate);
+    if (local_handle->IsObject() &&
+        local_handle->ToObject(isolate->GetCurrentContext()).ToLocal(&object)) {
       void* ptr = object->GetAlignedPointerFromInternalField(0);
       if (!ptr)
         return;

atom/browser/api/atom_api_session.h

@@ -15,7 +15,6 @@
 #include "base/values.h"
 #include "content/public/browser/download_manager.h"
 #include "native_mate/handle.h"
-#include "net/base/completion_callback.h"
 
 class GURL;
 

atom/browser/api/atom_api_system_preferences_mac.mm

@@ -13,6 +13,7 @@
 
 #include "atom/browser/mac/atom_application.h"
 #include "atom/browser/mac/dict_util.h"
+#include "atom/browser/ui/cocoa/NSColor+Hex.h"
 #include "atom/common/native_mate_converters/gurl_converter.h"
 #include "atom/common/native_mate_converters/value_converter.h"
 #include "base/mac/scoped_cftyperef.h"
@@ -111,21 +112,6 @@ std::string ConvertAuthorizationStatus(AVAuthorizationStatusMac status) {
   }
 }
 
-// Convert color to RGBA value like "aabbccdd"
-std::string ToRGBA(NSColor* color) {
-  return base::StringPrintf(
-      "%02X%02X%02X%02X", (int)(color.redComponent * 0xFF),
-      (int)(color.greenComponent * 0xFF), (int)(color.blueComponent * 0xFF),
-      (int)(color.alphaComponent * 0xFF));
-}
-
-// Convert color to RGB hex value like "#ABCDEF"
-std::string ToRGBHex(NSColor* color) {
-  return base::StringPrintf("#%02X%02X%02X", (int)(color.redComponent * 0xFF),
-                            (int)(color.greenComponent * 0xFF),
-                            (int)(color.blueComponent * 0xFF));
-}
-
 }  // namespace
 
 void SystemPreferences::PostNotification(const std::string& name,
@@ -405,7 +391,7 @@ std::string SystemPreferences::GetAccentColor() {
   if (@available(macOS 10.14, *))
     sysColor = [NSColor controlAccentColor];
 
-  return ToRGBA(sysColor);
+  return base::SysNSStringToUTF8([sysColor RGBAValue]);
 }
 
 std::string SystemPreferences::GetSystemColor(const std::string& color,
@@ -434,7 +420,7 @@ std::string SystemPreferences::GetSystemColor(const std::string& color,
     return "";
   }
 
-  return ToRGBHex(sysColor);
+  return base::SysNSStringToUTF8([sysColor hexadecimalValue]);
 }
 
 bool SystemPreferences::CanPromptTouchID() {
@@ -587,7 +573,7 @@ std::string SystemPreferences::GetColor(const std::string& color,
     return "";
   }
 
-  return ToRGBHex(sysColor);
+  return base::SysNSStringToUTF8([sysColor hexadecimalValue]);
 }
 
 std::string SystemPreferences::GetMediaAccessStatus(

atom/browser/api/atom_api_top_level_window.cc

@@ -648,10 +648,11 @@ void TopLevelWindow::SetFocusable(bool focusable) {
 }
 
 void TopLevelWindow::SetMenu(v8::Isolate* isolate, v8::Local<v8::Value> value) {
+  auto context = isolate->GetCurrentContext();
   mate::Handle<Menu> menu;
-  if (value->IsObject() &&
+  v8::Local<v8::Object> object;
-      gin::V8ToString(
+  if (value->IsObject() && value->ToObject(context).ToLocal(&object) &&
-          isolate, value->ToObject(isolate)->GetConstructorName()) == "Menu" &&
+      gin::V8ToString(isolate, object->GetConstructorName()) == "Menu" &&
       mate::ConvertFromV8(isolate, value, &menu) && !menu.IsEmpty()) {
     menu_.Reset(isolate, menu.ToV8());
     window_->SetMenu(menu->model());

atom/browser/api/atom_api_tray.cc

@@ -59,11 +59,7 @@ Tray::Tray(v8::Isolate* isolate,
   InitWith(isolate, wrapper);
 }
 
-Tray::~Tray() {
+Tray::~Tray() = default;
-  // Destroy the native tray in next tick.
-  base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE,
-                                                  tray_icon_.release());
-}
 
 // static
 mate::WrappableBase* Tray::New(mate::Handle<NativeImage> image,

atom/browser/api/atom_api_url_request.cc

@@ -354,7 +354,7 @@ void URLRequest::OnReceivedRedirect(
 }
 
 void URLRequest::OnAuthenticationRequired(
-    scoped_refptr<const net::AuthChallengeInfo> auth_info) {
+    const net::AuthChallengeInfo& auth_info) {
   if (request_state_.Canceled() || request_state_.Closed()) {
     return;
   }
@@ -364,7 +364,7 @@ void URLRequest::OnAuthenticationRequired(
     return;
   }
 
-  Emit("login", auth_info.get(),
+  Emit("login", auth_info,
        base::Bind(&AtomURLRequest::PassLoginInformation, atom_request_));
 }
 

atom/browser/api/atom_api_url_request.h

@@ -105,8 +105,7 @@ class URLRequest : public mate::EventEmitter<URLRequest> {
       const std::string& method,
       const GURL& url,
       scoped_refptr<net::HttpResponseHeaders> response_headers);
-  void OnAuthenticationRequired(
+  void OnAuthenticationRequired(const net::AuthChallengeInfo& auth_info);
-      scoped_refptr<const net::AuthChallengeInfo> auth_info);
   void OnResponseStarted(
       scoped_refptr<net::HttpResponseHeaders> response_headers);
   void OnResponseData(scoped_refptr<const net::IOBufferWithSize> data);

atom/browser/api/atom_api_web_contents.cc

@@ -86,6 +86,7 @@
 #include "net/url_request/url_request_context.h"
 #include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
 #include "third_party/blink/public/mojom/frame/find_in_page.mojom.h"
+#include "third_party/blink/public/platform/web_cursor_info.h"
 #include "third_party/blink/public/platform/web_input_event.h"
 #include "ui/display/screen.h"
 #include "ui/events/base_event_utils.h"
@@ -490,12 +491,14 @@ void WebContents::DestroyWebContents(bool async) {
   ResetManagedWebContents(async);
 }
 
-bool WebContents::DidAddMessageToConsole(content::WebContents* source,
+bool WebContents::DidAddMessageToConsole(
-                                         int32_t level,
+    content::WebContents* source,
-                                         const base::string16& message,
+    blink::mojom::ConsoleMessageLevel level,
-                                         int32_t line_no,
+    const base::string16& message,
-                                         const base::string16& source_id) {
+    int32_t line_no,
-  return Emit("console-message", level, message, line_no, source_id);
+    const base::string16& source_id) {
+  return Emit("console-message", static_cast<int32_t>(level), message, line_no,
+              source_id);
 }
 
 void WebContents::OnCreateWindow(
@@ -807,20 +810,20 @@ void WebContents::PluginCrashed(const base::FilePath& plugin_path,
 }
 
 void WebContents::MediaStartedPlaying(const MediaPlayerInfo& video_type,
-                                      const MediaPlayerId& id) {
+                                      const content::MediaPlayerId& id) {
   Emit("media-started-playing");
 }
 
 void WebContents::MediaStoppedPlaying(
     const MediaPlayerInfo& video_type,
-    const MediaPlayerId& id,
+    const content::MediaPlayerId& id,
     content::WebContentsObserver::MediaStoppedReason reason) {
   Emit("media-paused");
 }
 
-void WebContents::DidChangeThemeColor(SkColor theme_color) {
+void WebContents::DidChangeThemeColor(base::Optional<SkColor> theme_color) {
-  if (theme_color != SK_ColorTRANSPARENT) {
+  if (theme_color) {
-    Emit("did-change-theme-color", atom::ToRGBHex(theme_color));
+    Emit("did-change-theme-color", atom::ToRGBHex(theme_color.value()));
   } else {
     Emit("did-change-theme-color", nullptr);
   }
@@ -1192,7 +1195,7 @@ void WebContents::SetBackgroundThrottling(bool allowed) {
     return;
   }
 
-  const auto* render_view_host = contents->GetRenderViewHost();
+  auto* render_view_host = contents->GetRenderViewHost();
   if (!render_view_host) {
     return;
   }
@@ -1915,10 +1918,9 @@ v8::Local<v8::Promise> WebContents::CapturePage(mate::Arguments* args) {
 }
 
 void WebContents::OnCursorChange(const content::WebCursor& cursor) {
-  content::CursorInfo info;
+  const content::CursorInfo& info = cursor.info();
-  cursor.GetCursorInfo(&info);
 
-  if (cursor.IsCustom()) {
+  if (info.type == blink::WebCursorInfo::kTypeCustom) {
     Emit("cursor-changed", CursorTypeToString(info),
          gfx::Image::CreateFrom1xBitmap(info.custom_image),
          info.image_scale_factor,

atom/browser/api/atom_api_web_contents.h

@@ -337,7 +337,7 @@ class WebContents : public mate::TrackableObject<WebContents>,
 
   // content::WebContentsDelegate:
   bool DidAddMessageToConsole(content::WebContents* source,
-                              int32_t level,
+                              blink::mojom::ConsoleMessageLevel level,
                               const base::string16& message,
                               int32_t line_no,
                               const base::string16& source_id) override;
@@ -445,12 +445,12 @@ class WebContents : public mate::TrackableObject<WebContents>,
   void PluginCrashed(const base::FilePath& plugin_path,
                      base::ProcessId plugin_pid) override;
   void MediaStartedPlaying(const MediaPlayerInfo& video_type,
-                           const MediaPlayerId& id) override;
+                           const content::MediaPlayerId& id) override;
   void MediaStoppedPlaying(
       const MediaPlayerInfo& video_type,
-      const MediaPlayerId& id,
+      const content::MediaPlayerId& id,
       content::WebContentsObserver::MediaStoppedReason reason) override;
-  void DidChangeThemeColor(SkColor theme_color) override;
+  void DidChangeThemeColor(base::Optional<SkColor> theme_color) override;
   void OnInterfaceRequestFromFrame(
       content::RenderFrameHost* render_frame_host,
       const std::string& interface_name,

atom/browser/api/event.cc

@@ -52,7 +52,10 @@ void Event::FrameDeleted(content::RenderFrameHost* rfh) {
 }
 
 void Event::PreventDefault(v8::Isolate* isolate) {
-  GetWrapper()->Set(StringToV8(isolate, "defaultPrevented"), v8::True(isolate));
+  GetWrapper()
+      ->Set(isolate->GetCurrentContext(),
+            StringToV8(isolate, "defaultPrevented"), v8::True(isolate))
+      .Check();
 }
 
 bool Event::SendReply(const base::ListValue& result) {

atom/browser/api/event_emitter.h

@@ -104,8 +104,13 @@ class EventEmitter : public Wrappable<T> {
     v8::Locker locker(isolate());
     v8::HandleScope handle_scope(isolate());
     EmitEvent(isolate(), GetWrapper(), name, event, args...);
-    return event->Get(StringToV8(isolate(), "defaultPrevented"))
+    auto context = isolate()->GetCurrentContext();
-        ->BooleanValue(isolate());
+    v8::Local<v8::Value> defaultPrevented;
+    if (event->Get(context, StringToV8(isolate(), "defaultPrevented"))
+            .ToLocal(&defaultPrevented)) {
+      return defaultPrevented->BooleanValue(isolate());
+    }
+    return false;
   }
 
   DISALLOW_COPY_AND_ASSIGN(EventEmitter);

atom/browser/atom_browser_client.cc

@@ -534,7 +534,7 @@ std::string AtomBrowserClient::GetGeolocationApiKey() {
   return api_key;
 }
 
-content::QuotaPermissionContext*
+scoped_refptr<content::QuotaPermissionContext>
 AtomBrowserClient::CreateQuotaPermissionContext() {
   return new AtomQuotaPermissionContext;
 }
@@ -867,7 +867,8 @@ NotificationPresenter* AtomBrowserClient::GetNotificationPresenter() {
 }
 
 content::PlatformNotificationService*
-AtomBrowserClient::GetPlatformNotificationService() {
+AtomBrowserClient::GetPlatformNotificationService(
+    content::BrowserContext* browser_context) {
   if (!notification_service_) {
     notification_service_.reset(new PlatformNotificationService(this));
   }

atom/browser/atom_browser_client.h

@@ -90,7 +90,8 @@ class AtomBrowserClient : public content::ContentBrowserClient,
       base::CommandLine* command_line) override;
   void DidCreatePpapiPlugin(content::BrowserPpapiHost* browser_host) override;
   std::string GetGeolocationApiKey() override;
-  content::QuotaPermissionContext* CreateQuotaPermissionContext() override;
+  scoped_refptr<content::QuotaPermissionContext> CreateQuotaPermissionContext()
+      override;
   content::GeneratedCodeCacheSettings GetGeneratedCodeCacheSettings(
       content::BrowserContext* context) override;
   void AllowCertificateError(
@@ -144,8 +145,8 @@ class AtomBrowserClient : public content::ContentBrowserClient,
   net::NetLog* GetNetLog() override;
   content::MediaObserver* GetMediaObserver() override;
   content::DevToolsManagerDelegate* GetDevToolsManagerDelegate() override;
-  content::PlatformNotificationService* GetPlatformNotificationService()
+  content::PlatformNotificationService* GetPlatformNotificationService(
-      override;
+      content::BrowserContext* browser_context) override;
   content::BrowserMainParts* CreateBrowserMainParts(
       const content::MainFunctionParams&) override;
   base::FilePath GetDefaultDownloadDirectory() override;

atom/browser/atom_browser_main_parts.cc

@@ -76,7 +76,7 @@
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/l10n/l10n_util_win.h"
 #include "ui/display/win/dpi.h"
-#include "ui/gfx/platform_font_win.h"
+#include "ui/gfx/system_fonts_win.h"
 #include "ui/strings/grit/app_locale_settings.h"
 #endif
 
@@ -102,7 +102,7 @@ void Erase(T* container, typename T::iterator iter) {
 
 #if defined(OS_WIN)
 // gfx::Font callbacks
-void AdjustUIFont(gfx::PlatformFontWin::FontAdjustment* font_adjustment) {
+void AdjustUIFont(gfx::win::FontAdjustment* font_adjustment) {
   l10n_util::NeedOverrideDefaultUIFont(&font_adjustment->font_family_override,
                                        &font_adjustment->font_scale);
   font_adjustment->font_scale *= display::win::GetAccessibilityFontScale();
@@ -380,8 +380,8 @@ void AtomBrowserMainParts::ToolkitInitialized() {
 #endif
 
 #if defined(OS_WIN)
-  gfx::PlatformFontWin::SetAdjustFontCallback(&AdjustUIFont);
+  gfx::win::SetAdjustFontCallback(&AdjustUIFont);
-  gfx::PlatformFontWin::SetGetMinimumFontSizeCallback(&GetMinimumFontSize);
+  gfx::win::SetGetMinimumFontSizeCallback(&GetMinimumFontSize);
 
   wchar_t module_name[MAX_PATH] = {0};
   if (GetModuleFileName(NULL, module_name, MAX_PATH))
@@ -469,6 +469,7 @@ void AtomBrowserMainParts::PostMainMessageLoopRun() {
   ui::SetX11ErrorHandlers(X11EmptyErrorHandler, X11EmptyIOErrorHandler);
 #endif
 
+  node_debugger_->Stop();
   js_env_->OnMessageLoopDestroying();
 
 #if defined(OS_MACOSX)

atom/browser/atom_browser_main_parts_mac.mm

@@ -41,8 +41,26 @@ void AtomBrowserMainParts::InitializeMainNib() {
   auto application = [principalClass sharedApplication];
 
   NSString* mainNibName = [infoDictionary objectForKey:@"NSMainNibFile"];
-  auto mainNib = [[NSNib alloc] initWithNibNamed:mainNibName
+
-                                          bundle:base::mac::FrameworkBundle()];
+  NSNib* mainNib;
+
+  @try {
+    mainNib = [[NSNib alloc] initWithNibNamed:mainNibName
+                                       bundle:base::mac::FrameworkBundle()];
+    // Handle failure of initWithNibNamed on SMB shares
+    // TODO(codebytere): Remove when
+    // https://bugs.chromium.org/p/chromium/issues/detail?id=932935 is fixed
+  } @catch (NSException* exception) {
+    NSString* nibPath =
+        [NSString stringWithFormat:@"Resources/%@.nib", mainNibName];
+    nibPath = [base::mac::FrameworkBundle().bundlePath
+        stringByAppendingPathComponent:nibPath];
+
+    NSData* data = [NSData dataWithContentsOfFile:nibPath];
+    mainNib = [[NSNib alloc] initWithNibData:data
+                                      bundle:base::mac::FrameworkBundle()];
+  }
+
   [mainNib instantiateWithOwner:application topLevelObjects:nil];
   [mainNib release];
 }

atom/browser/atom_download_manager_delegate.cc

@@ -127,8 +127,8 @@ void AtomDownloadManagerDelegate::OnDownloadPathGenerated(
         base::Bind(&AtomDownloadManagerDelegate::OnDownloadSaveDialogDone,
                    base::Unretained(this), download_id, callback);
 
-    file_dialog::ShowSaveDialog(settings, std::move(dialog_promise));
     ignore_result(dialog_promise.Then(dialog_callback));
+    file_dialog::ShowSaveDialog(settings, std::move(dialog_promise));
   } else {
     callback.Run(path, download::DownloadItem::TARGET_DISPOSITION_PROMPT,
                  download::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS, path,
@@ -136,54 +136,48 @@ void AtomDownloadManagerDelegate::OnDownloadPathGenerated(
   }
 }
 
-#if defined(MAS_BUILD)
 void AtomDownloadManagerDelegate::OnDownloadSaveDialogDone(
     uint32_t download_id,
     const content::DownloadTargetCallback& download_callback,
-    bool result,
+    mate::Dictionary result) {
-    const base::FilePath& path,
-    const std::string& bookmark)
-#else
-void AtomDownloadManagerDelegate::OnDownloadSaveDialogDone(
-    uint32_t download_id,
-    const content::DownloadTargetCallback& download_callback,
-    bool result,
-    const base::FilePath& path)
-#endif
-{
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   auto* item = download_manager_->GetDownload(download_id);
   if (!item)
     return;
 
-  if (result) {
+  bool canceled = true;
-    // Remember the last selected download directory.
+  result.Get("canceled", &canceled);
-    AtomBrowserContext* browser_context = static_cast<AtomBrowserContext*>(
-        download_manager_->GetBrowserContext());
-    browser_context->prefs()->SetFilePath(prefs::kDownloadDefaultDirectory,
-                                          path.DirName());
 
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
+  base::FilePath path;
-    v8::Locker locker(isolate);
+
-    v8::HandleScope handle_scope(isolate);
+  if (!canceled) {
-    api::DownloadItem* download_item =
+    if (result.Get("filePath", &path)) {
-        api::DownloadItem::FromWrappedClass(isolate, item);
+      // Remember the last selected download directory.
-    if (download_item)
+      AtomBrowserContext* browser_context = static_cast<AtomBrowserContext*>(
-      download_item->SetSavePath(path);
+          download_manager_->GetBrowserContext());
+      browser_context->prefs()->SetFilePath(prefs::kDownloadDefaultDirectory,
+                                            path.DirName());
+
+      v8::Isolate* isolate = v8::Isolate::GetCurrent();
+      v8::Locker locker(isolate);
+      v8::HandleScope handle_scope(isolate);
+      api::DownloadItem* download_item =
+          api::DownloadItem::FromWrappedClass(isolate, item);
+      if (download_item)
+        download_item->SetSavePath(path);
+    }
   }
 
   // Running the DownloadTargetCallback with an empty FilePath signals that the
   // download should be cancelled. If user cancels the file save dialog, run
   // the callback with empty FilePath.
-  const base::FilePath download_path = result ? path : base::FilePath();
   const auto interrupt_reason =
-      download_path.empty() ? download::DOWNLOAD_INTERRUPT_REASON_USER_CANCELED
+      path.empty() ? download::DOWNLOAD_INTERRUPT_REASON_USER_CANCELED
-                            : download::DOWNLOAD_INTERRUPT_REASON_NONE;
+                   : download::DOWNLOAD_INTERRUPT_REASON_NONE;
-  download_callback.Run(download_path,
+  download_callback.Run(path, download::DownloadItem::TARGET_DISPOSITION_PROMPT,
-                        download::DownloadItem::TARGET_DISPOSITION_PROMPT,
+                        download::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS, path,
-                        download::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS,
+                        interrupt_reason);
-                        download_path, interrupt_reason);
 }
 
 void AtomDownloadManagerDelegate::Shutdown() {

atom/browser/atom_download_manager_delegate.h

@@ -45,20 +45,10 @@ class AtomDownloadManagerDelegate : public content::DownloadManagerDelegate {
                                const content::DownloadTargetCallback& callback,
                                const base::FilePath& default_path);
 
-#if defined(MAS_BUILD)
   void OnDownloadSaveDialogDone(
       uint32_t download_id,
       const content::DownloadTargetCallback& download_callback,
-      bool result,
+      mate::Dictionary result);
-      const base::FilePath& path,
-      const std::string& bookmark);
-#else
-  void OnDownloadSaveDialogDone(
-      uint32_t download_id,
-      const content::DownloadTargetCallback& download_callback,
-      bool result,
-      const base::FilePath& path);
-#endif
 
   content::DownloadManager* download_manager_;
   base::WeakPtrFactory<AtomDownloadManagerDelegate> weak_ptr_factory_;

atom/browser/browser.h

@@ -197,6 +197,7 @@ class Browser : public WindowListObserver {
     base::string16 arguments;
     base::string16 title;
     base::string16 description;
+    base::FilePath working_dir;
     base::FilePath icon_path;
     int icon_index;
 

atom/browser/browser_mac.mm

@@ -131,7 +131,7 @@ bool Browser::IsDefaultProtocolClient(const std::string& protocol,
 void Browser::SetAppUserModelID(const base::string16& name) {}
 
 bool Browser::SetBadgeCount(int count) {
-  DockSetBadgeText(count != 0 ? base::IntToString(count) : "");
+  DockSetBadgeText(count != 0 ? base::NumberToString(count) : "");
   badge_count_ = count;
   return true;
 }

atom/browser/browser_process_impl.cc

@@ -338,3 +338,7 @@ printing::PrintJobManager* BrowserProcessImpl::print_job_manager() {
   return nullptr;
 #endif
 }
+
+StartupData* BrowserProcessImpl::startup_data() {
+  return nullptr;
+}

atom/browser/browser_process_impl.h

@@ -114,6 +114,7 @@ class BrowserProcessImpl : public BrowserProcess {
   void SetApplicationLocale(const std::string& locale) override;
   const std::string& GetApplicationLocale() override;
   printing::PrintJobManager* print_job_manager() override;
+  StartupData* startup_data() override;
 
  private:
 #if BUILDFLAG(ENABLE_PRINTING)

atom/browser/browser_win.cc

@@ -96,7 +96,7 @@ void Browser::Focus() {
 }
 
 void Browser::AddRecentDocument(const base::FilePath& path) {
-  if (base::win::GetVersion() < base::win::VERSION_WIN7)
+  if (base::win::GetVersion() < base::win::Version::WIN7)
     return;
 
   CComPtr<IShellItem> item;
@@ -141,6 +141,7 @@ bool Browser::SetUserTasks(const std::vector<UserTask>& tasks) {
     item.icon_path = task.icon_path;
     item.icon_index = task.icon_index;
     item.description = task.description;
+    item.working_dir = task.working_dir;
     category.items.push_back(item);
   }
 
@@ -346,7 +347,7 @@ std::string Browser::GetExecutableFileProductName() const {
 
 bool Browser::IsEmojiPanelSupported() {
   // emoji picker is supported on Windows 10's Spring 2018 update & above.
-  return base::win::GetVersion() >= base::win::Version::VERSION_WIN10_RS4;
+  return base::win::GetVersion() >= base::win::Version::WIN10_RS4;
 }
 
 void Browser::ShowEmojiPanel() {

atom/browser/common_web_contents_delegate.cc

@@ -352,9 +352,8 @@ blink::WebSecurityStyle CommonWebContentsDelegate::GetSecurityStyle(
   SecurityStateTabHelper* helper =
       SecurityStateTabHelper::FromWebContents(web_contents);
   DCHECK(helper);
-  security_state::SecurityInfo security_info;
+  return security_state::GetSecurityStyle(helper->GetSecurityLevel(),
-  helper->GetSecurityInfo(&security_info);
+                                          *helper->GetVisibleSecurityState(),
-  return security_state::GetSecurityStyle(security_info,
                                           security_style_explanations);
 }
 

atom/browser/io_thread.cc

@@ -45,7 +45,7 @@ void IOThread::Init() {
 
     auto cert_verifier = std::make_unique<net::CachingCertVerifier>(
         std::make_unique<net::MultiThreadedCertVerifier>(
-            net::CertVerifyProc::CreateDefault()));
+            net::CertVerifyProc::CreateDefault(nullptr)));
     builder->SetCertVerifier(std::move(cert_verifier));
 
     // Create the network service, so that shared host resolver
@@ -70,5 +70,5 @@ void IOThread::CleanUp() {
     system_request_context_->proxy_resolution_service()->OnShutdown();
 
   if (net_log_)
-    net_log_->ShutDownBeforeTaskScheduler();
+    net_log_->ShutDownBeforeThreadPool();
 }

atom/browser/javascript_environment.cc

@@ -10,7 +10,7 @@
 #include "atom/common/node_includes.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
-#include "base/task/task_scheduler/initialization_util.h"
+#include "base/task/thread_pool/initialization_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/public/common/content_switches.h"
 #include "gin/array_buffer.h"

atom/browser/login_handler.cc

@@ -26,7 +26,7 @@ LoginHandler::LoginHandler(net::URLRequest* request,
                            net::AuthCredentials* credentials,
                            content::ResourceRequestInfo* resource_request_info)
     : credentials_(credentials),
-      auth_info_(&auth_info),
+      auth_info_(std::make_unique<net::AuthChallengeInfo>(auth_info)),
       auth_callback_(std::move(callback)),
       weak_factory_(this) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);

atom/browser/login_handler.h

@@ -5,6 +5,8 @@
 #ifndef ATOM_BROWSER_LOGIN_HANDLER_H_
 #define ATOM_BROWSER_LOGIN_HANDLER_H_
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
@@ -57,7 +59,7 @@ class LoginHandler : public base::RefCountedThreadSafe<LoginHandler> {
   net::AuthCredentials* credentials_;
 
   // Who/where/what asked for the authentication.
-  scoped_refptr<const net::AuthChallengeInfo> auth_info_;
+  std::unique_ptr<const net::AuthChallengeInfo> auth_info_;
 
   // WebContents associated with the login request.
   content::ResourceRequestInfo::WebContentsGetter web_contents_getter_;

atom/browser/native_window_views.cc

@@ -5,7 +5,6 @@
 #include "atom/browser/native_window_views.h"
 
 #if defined(OS_WIN)
-#include <objbase.h>
 #include <wrl/client.h>
 #endif
 
@@ -62,7 +61,6 @@
 #include "atom/browser/ui/win/atom_desktop_window_tree_host_win.h"
 #include "skia/ext/skia_utils_win.h"
 #include "ui/base/win/shell.h"
-#include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/display/win/screen_win.h"
 #include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
@@ -380,6 +378,9 @@ void NativeWindowViews::Show() {
 
   widget()->native_widget_private()->Show(GetRestoredState(), gfx::Rect());
 
+  // explicitly focus the window
+  widget()->Activate();
+
   NotifyWindowShow();
 
 #if defined(USE_X11)
@@ -470,24 +471,15 @@ void NativeWindowViews::SetEnabledInternal(bool enable) {
 #endif
 }
 
+#if defined(USE_X11)
 void NativeWindowViews::Maximize() {
-#if defined(OS_WIN)
-  // For window without WS_THICKFRAME style, we can not call Maximize().
-  if (!(::GetWindowLong(GetAcceleratedWidget(), GWL_STYLE) & WS_THICKFRAME)) {
-    restore_bounds_ = GetBounds();
-    auto display =
-        display::Screen::GetScreen()->GetDisplayNearestPoint(GetPosition());
-    SetBounds(display.work_area(), false);
-    return;
-  }
-#endif
-
   if (IsVisible())
     widget()->Maximize();
   else
     widget()->native_widget_private()->Show(ui::SHOW_STATE_MAXIMIZED,
                                             gfx::Rect());
 }
+#endif
 
 void NativeWindowViews::Unmaximize() {
 #if defined(OS_WIN)

atom/browser/native_window_views_win.cc

@@ -2,14 +2,19 @@
 // Use of this source code is governed by the MIT license that can be
 // found in the LICENSE file.
 
+#include <dwmapi.h>
+#include <shellapi.h>
+
 #include "atom/browser/browser.h"
 #include "atom/browser/native_window_views.h"
 #include "atom/browser/ui/views/root_view.h"
 #include "atom/common/atom_constants.h"
 #include "content/public/browser/browser_accessibility_state.h"
 #include "ui/base/win/accessibility_misc_utils.h"
+#include "ui/display/display.h"
 #include "ui/display/win/screen_win.h"
 #include "ui/gfx/geometry/insets.h"
+#include "ui/views/widget/native_widget_private.h"
 
 // Must be included after other Windows headers.
 #include <UIAutomationCoreApi.h>
@@ -138,11 +143,155 @@ bool IsScreenReaderActive() {
   return screenReader && UiaClientsAreListening();
 }
 
+// We use "enum" instead of "enum class" because we need to do bitwise compare.
+enum AppbarAutohideEdge {
+  TOP = 1 << 0,
+  LEFT = 1 << 1,
+  BOTTOM = 1 << 2,
+  RIGHT = 1 << 3,
+};
+
+// The thickness of an auto-hide taskbar in pixel.
+constexpr int kAutoHideTaskbarThicknessPx = 2;
+
+// Code is copied from chrome_views_delegate_win.cc.
+bool MonitorHasAutohideTaskbarForEdge(UINT edge, HMONITOR monitor) {
+  APPBARDATA taskbar_data = {sizeof(APPBARDATA), NULL, 0, edge};
+  taskbar_data.hWnd = ::GetForegroundWindow();
+
+  // MSDN documents an ABM_GETAUTOHIDEBAREX, which supposedly takes a monitor
+  // rect and returns autohide bars on that monitor.  This sounds like a good
+  // idea for multi-monitor systems.  Unfortunately, it appears to not work at
+  // least some of the time (erroneously returning NULL) and there's almost no
+  // online documentation or other sample code using it that suggests ways to
+  // address this problem. We do the following:-
+  // 1. Use the ABM_GETAUTOHIDEBAR message. If it works, i.e. returns a valid
+  //    window we are done.
+  // 2. If the ABM_GETAUTOHIDEBAR message does not work we query the auto hide
+  //    state of the taskbar and then retrieve its position. That call returns
+  //    the edge on which the taskbar is present. If it matches the edge we
+  //    are looking for, we are done.
+  // NOTE: This call spins a nested run loop.
+  HWND taskbar = reinterpret_cast<HWND>(
+      SHAppBarMessage(ABM_GETAUTOHIDEBAR, &taskbar_data));
+  if (!::IsWindow(taskbar)) {
+    APPBARDATA taskbar_data = {sizeof(APPBARDATA), 0, 0, 0};
+    unsigned int taskbar_state = SHAppBarMessage(ABM_GETSTATE, &taskbar_data);
+    if (!(taskbar_state & ABS_AUTOHIDE))
+      return false;
+
+    taskbar_data.hWnd = ::FindWindow(L"Shell_TrayWnd", NULL);
+    if (!::IsWindow(taskbar_data.hWnd))
+      return false;
+
+    SHAppBarMessage(ABM_GETTASKBARPOS, &taskbar_data);
+    if (taskbar_data.uEdge == edge)
+      taskbar = taskbar_data.hWnd;
+  }
+
+  // There is a potential race condition here:
+  // 1. A maximized chrome window is fullscreened.
+  // 2. It is switched back to maximized.
+  // 3. In the process the window gets a WM_NCCACLSIZE message which calls us to
+  //    get the autohide state.
+  // 4. The worker thread is invoked. It calls the API to get the autohide
+  //    state. On Windows versions  earlier than Windows 7, taskbars could
+  //    easily be always on top or not.
+  //    This meant that we only want to look for taskbars which have the topmost
+  //    bit set.  However this causes problems in cases where the window on the
+  //    main thread is still in the process of switching away from fullscreen.
+  //    In this case the taskbar might not yet have the topmost bit set.
+  // 5. The main thread resumes and does not leave space for the taskbar and
+  //    hence it does not pop when hovered.
+  //
+  // To address point 4 above, it is best to not check for the WS_EX_TOPMOST
+  // window style on the taskbar, as starting from Windows 7, the topmost
+  // style is always set. We don't support XP and Vista anymore.
+  if (::IsWindow(taskbar)) {
+    if (MonitorFromWindow(taskbar, MONITOR_DEFAULTTONEAREST) == monitor)
+      return true;
+    // In some cases like when the autohide taskbar is on the left of the
+    // secondary monitor, the MonitorFromWindow call above fails to return the
+    // correct monitor the taskbar is on. We fallback to MonitorFromPoint for
+    // the cursor position in that case, which seems to work well.
+    POINT cursor_pos = {0};
+    GetCursorPos(&cursor_pos);
+    if (MonitorFromPoint(cursor_pos, MONITOR_DEFAULTTONEAREST) == monitor)
+      return true;
+  }
+  return false;
+}
+
+int GetAppbarAutohideEdges(HWND hwnd) {
+  HMONITOR monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONULL);
+  if (!monitor)
+    return 0;
+
+  int edges = 0;
+  if (MonitorHasAutohideTaskbarForEdge(ABE_LEFT, monitor))
+    edges |= AppbarAutohideEdge::LEFT;
+  if (MonitorHasAutohideTaskbarForEdge(ABE_TOP, monitor))
+    edges |= AppbarAutohideEdge::TOP;
+  if (MonitorHasAutohideTaskbarForEdge(ABE_RIGHT, monitor))
+    edges |= AppbarAutohideEdge::RIGHT;
+  if (MonitorHasAutohideTaskbarForEdge(ABE_BOTTOM, monitor))
+    edges |= AppbarAutohideEdge::BOTTOM;
+  return edges;
+}
+
 }  // namespace
 
 std::set<NativeWindowViews*> NativeWindowViews::forwarding_windows_;
 HHOOK NativeWindowViews::mouse_hook_ = NULL;
 
+void NativeWindowViews::Maximize() {
+  int autohide_edges = 0;
+  if (!has_frame())
+    autohide_edges = GetAppbarAutohideEdges(GetAcceleratedWidget());
+
+  // Only use Maximize() when:
+  // 1. window has WS_THICKFRAME style;
+  // 2. and window is not frameless when there is autohide taskbar.
+  if ((::GetWindowLong(GetAcceleratedWidget(), GWL_STYLE) & WS_THICKFRAME) &&
+      (has_frame() || autohide_edges == 0)) {
+    if (IsVisible())
+      widget()->Maximize();
+    else
+      widget()->native_widget_private()->Show(ui::SHOW_STATE_MAXIMIZED,
+                                              gfx::Rect());
+    return;
+  }
+
+  gfx::Insets insets;
+  if (!has_frame()) {
+    // When taskbar is autohide, we need to leave some space so the window
+    // isn't treated as a "fullscreen app", which would cause the taskbars
+    // to disappear.
+    //
+    // This trick comes from hwnd_message_handler.cc. While Chromium already
+    // does this for normal window, somehow it is not applying the trick when
+    // using frameless window, and we have to do it ourselves.
+    float scale_factor =
+        display::win::ScreenWin::GetScaleFactorForHWND(GetAcceleratedWidget());
+    int thickness = std::ceil(kAutoHideTaskbarThicknessPx / scale_factor);
+    if (autohide_edges & AppbarAutohideEdge::LEFT)
+      insets.set_left(-thickness);
+    if (autohide_edges & AppbarAutohideEdge::TOP)
+      insets.set_top(-thickness);
+    if (autohide_edges & AppbarAutohideEdge::RIGHT)
+      insets.set_right(thickness);
+    if (autohide_edges & AppbarAutohideEdge::BOTTOM)
+      insets.set_bottom(thickness);
+  }
+
+  restore_bounds_ = GetBounds();
+  auto display =
+      display::Screen::GetScreen()->GetDisplayNearestPoint(GetPosition());
+  gfx::Rect bounds = display.work_area();
+  bounds.Inset(insets);
+  SetBounds(bounds, false);
+}
+
 bool NativeWindowViews::ExecuteWindowsCommand(int command_id) {
   std::string command = AppCommandToString(command_id);
   NotifyWindowExecuteAppCommand(command);

atom/browser/net/atom_cert_verifier.cc

@@ -152,7 +152,7 @@ class CertVerifierRequest : public AtomCertVerifier::Request {
 };
 
 AtomCertVerifier::AtomCertVerifier(RequireCTDelegate* ct_delegate)
-    : default_cert_verifier_(net::CertVerifier::CreateDefault()),
+    : default_cert_verifier_(net::CertVerifier::CreateDefault(nullptr)),
       ct_delegate_(ct_delegate) {}
 
 AtomCertVerifier::~AtomCertVerifier() {}

atom/browser/net/atom_network_delegate.cc

@@ -29,19 +29,19 @@ namespace atom {
 
 const char* ResourceTypeToString(content::ResourceType type) {
   switch (type) {
-    case content::RESOURCE_TYPE_MAIN_FRAME:
+    case content::ResourceType::kMainFrame:
       return "mainFrame";
-    case content::RESOURCE_TYPE_SUB_FRAME:
+    case content::ResourceType::kSubFrame:
       return "subFrame";
-    case content::RESOURCE_TYPE_STYLESHEET:
+    case content::ResourceType::kStylesheet:
       return "stylesheet";
-    case content::RESOURCE_TYPE_SCRIPT:
+    case content::ResourceType::kScript:
       return "script";
-    case content::RESOURCE_TYPE_IMAGE:
+    case content::ResourceType::kImage:
       return "image";
-    case content::RESOURCE_TYPE_OBJECT:
+    case content::ResourceType::kObject:
       return "object";
-    case content::RESOURCE_TYPE_XHR:
+    case content::ResourceType::kXhr:
       return "xhr";
     default:
       return "other";

atom/browser/net/atom_url_request.cc

@@ -347,13 +347,13 @@ void AtomURLRequest::OnReceivedRedirect(net::URLRequest* request,
 }
 
 void AtomURLRequest::OnAuthRequired(net::URLRequest* request,
-                                    net::AuthChallengeInfo* auth_info) {
+                                    const net::AuthChallengeInfo& auth_info) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
 
   base::PostTaskWithTraits(
       FROM_HERE, {content::BrowserThread::UI},
       base::BindOnce(&AtomURLRequest::InformDelegateAuthenticationRequired,
-                     this, scoped_refptr<net::AuthChallengeInfo>(auth_info)));
+                     this, auth_info));
 }
 
 void AtomURLRequest::OnResponseStarted(net::URLRequest* request,
@@ -468,7 +468,7 @@ void AtomURLRequest::InformDelegateReceivedRedirect(
 }
 
 void AtomURLRequest::InformDelegateAuthenticationRequired(
-    scoped_refptr<net::AuthChallengeInfo> auth_info) const {
+    const net::AuthChallengeInfo& auth_info) const {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   if (delegate_)
     delegate_->OnAuthenticationRequired(auth_info);

atom/browser/net/atom_url_request.h

@@ -53,7 +53,7 @@ class AtomURLRequest : public base::RefCountedThreadSafe<AtomURLRequest>,
                           const net::RedirectInfo& info,
                           bool* defer_redirect) override;
   void OnAuthRequired(net::URLRequest* request,
-                      net::AuthChallengeInfo* auth_info) override;
+                      const net::AuthChallengeInfo& auth_info) override;
   void OnResponseStarted(net::URLRequest* request, int net_error) override;
   void OnReadCompleted(net::URLRequest* request, int bytes_read) override;
 
@@ -93,7 +93,7 @@ class AtomURLRequest : public base::RefCountedThreadSafe<AtomURLRequest>,
       const GURL& url,
       scoped_refptr<net::HttpResponseHeaders> response_headers) const;
   void InformDelegateAuthenticationRequired(
-      scoped_refptr<net::AuthChallengeInfo> auth_info) const;
+      const net::AuthChallengeInfo& auth_info) const;
   void InformDelegateResponseStarted(
       scoped_refptr<net::HttpResponseHeaders>) const;
   void InformDelegateResponseData(

atom/browser/net/system_network_context_manager.cc

@@ -50,6 +50,8 @@ network::mojom::HttpAuthDynamicParamsPtr CreateHttpAuthDynamicParams() {
       command_line->GetSwitchValueASCII(atom::switches::kAuthServerWhitelist);
   auth_dynamic_params->delegate_whitelist = command_line->GetSwitchValueASCII(
       atom::switches::kAuthNegotiateDelegateWhitelist);
+  auth_dynamic_params->enable_negotiate_port =
+      command_line->HasSwitch(atom::switches::kEnableAuthNegotiatePort);
 
   return auth_dynamic_params;
 }

atom/browser/net/url_request_buffer_job.cc

@@ -122,7 +122,7 @@ void URLRequestBufferJob::Kill() {
 
 void URLRequestBufferJob::GetResponseInfo(net::HttpResponseInfo* info) {
   std::string status("HTTP/1.1 ");
-  status.append(base::IntToString(status_code_));
+  status.append(base::NumberToString(status_code_));
   status.append(" ");
   status.append(net::GetHttpReasonPhrase(status_code_));
   status.append("\0\0", 2);

atom/browser/net/url_request_context_getter.cc

@@ -296,7 +296,7 @@ net::URLRequestContext* URLRequestContextGetter::GetURLRequestContext() {
     const auto& custom_standard_schemes = atom::api::GetStandardSchemes();
     cookie_schemes.insert(cookie_schemes.end(), custom_standard_schemes.begin(),
                           custom_standard_schemes.end());
-    cookie_monster->SetCookieableSchemes(cookie_schemes);
+    cookie_monster->SetCookieableSchemes(cookie_schemes, base::NullCallback());
 
     // Setup handlers for custom job factory.
     top_job_factory_.reset(new AtomURLRequestJobFactory);

atom/browser/net/url_request_stream_job.cc

@@ -48,7 +48,7 @@ void BeforeStartInUI(base::WeakPtr<URLRequestStreamJob> job,
     status_code = 200;
   }
   std::string status("HTTP/1.1 ");
-  status.append(base::IntToString(status_code));
+  status.append(base::NumberToString(status_code));
   status.append(" ");
   status.append(
       net::GetHttpReasonPhrase(static_cast<net::HttpStatusCode>(status_code)));

atom/browser/node_debugger.cc

@@ -37,13 +37,13 @@ void NodeDebugger::Start() {
   }
 
   node::DebugOptions options;
+  node::options_parser::DebugOptionsParser options_parser;
   std::vector<std::string> exec_args;
   std::vector<std::string> v8_args;
   std::vector<std::string> errors;
 
-  node::options_parser::DebugOptionsParser::instance.Parse(
+  options_parser.Parse(&args, &exec_args, &v8_args, &options,
-      &args, &exec_args, &v8_args, &options,
+                       node::options_parser::kDisallowedInEnvironment, &errors);
-      node::options_parser::kDisallowedInEnvironment, &errors);
 
   if (!errors.empty()) {
     // TODO(jeremy): what's the appropriate behaviour here?
@@ -51,13 +51,6 @@ void NodeDebugger::Start() {
                << base::JoinString(errors, " ");
   }
 
-  // Set process._debugWaitConnect if --inspect-brk was specified to stop
-  // the debugger on the first line
-  if (options.wait_for_connect()) {
-    mate::Dictionary process(env_->isolate(), env_->process_object());
-    process.Set("_breakFirstLine", true);
-  }
-
   const char* path = "";
   if (inspector->Start(path, options,
                        std::make_shared<node::HostPort>(options.host_port),
@@ -65,4 +58,10 @@ void NodeDebugger::Start() {
     DCHECK(env_->inspector_agent()->IsListening());
 }
 
+void NodeDebugger::Stop() {
+  auto* inspector = env_->inspector_agent();
+  if (inspector && inspector->IsListening())
+    inspector->Stop();
+}
+
 }  // namespace atom

atom/browser/node_debugger.h

@@ -20,6 +20,7 @@ class NodeDebugger {
   ~NodeDebugger();
 
   void Start();
+  void Stop();
 
  private:
   node::Environment* env_;

atom/browser/notifications/platform_notification_service.cc

@@ -79,7 +79,6 @@ PlatformNotificationService::~PlatformNotificationService() {}
 
 void PlatformNotificationService::DisplayNotification(
     content::RenderProcessHost* render_process_host,
-    content::BrowserContext* browser_context,
     const std::string& notification_id,
     const GURL& origin,
     const blink::PlatformNotificationData& notification_data,
@@ -100,7 +99,6 @@ void PlatformNotificationService::DisplayNotification(
 }
 
 void PlatformNotificationService::DisplayPersistentNotification(
-    content::BrowserContext* browser_context,
     const std::string& notification_id,
     const GURL& service_worker_scope,
     const GURL& origin,
@@ -108,11 +106,9 @@ void PlatformNotificationService::DisplayPersistentNotification(
     const blink::NotificationResources& notification_resources) {}
 
 void PlatformNotificationService::ClosePersistentNotification(
-    content::BrowserContext* browser_context,
     const std::string& notification_id) {}
 
 void PlatformNotificationService::CloseNotification(
-    content::BrowserContext* browser_context,
     const std::string& notification_id) {
   auto* presenter = browser_client_->GetNotificationPresenter();
   if (!presenter)
@@ -121,25 +117,19 @@ void PlatformNotificationService::CloseNotification(
 }
 
 void PlatformNotificationService::GetDisplayedNotifications(
-    content::BrowserContext* browser_context,
     DisplayedNotificationsCallback callback) {}
 
-int64_t PlatformNotificationService::ReadNextPersistentNotificationId(
+int64_t PlatformNotificationService::ReadNextPersistentNotificationId() {
-    content::BrowserContext* browser_context) {
   // Electron doesn't support persistent notifications.
   return 0;
 }
 
 void PlatformNotificationService::RecordNotificationUkmEvent(
-    content::BrowserContext* browser_context,
     const content::NotificationDatabaseData& data) {}
 
-void PlatformNotificationService::ScheduleTrigger(
+void PlatformNotificationService::ScheduleTrigger(base::Time timestamp) {}
-    content::BrowserContext* browser_context,
-    base::Time timestamp) {}
 
-base::Time PlatformNotificationService::ReadNextTriggerTimestamp(
+base::Time PlatformNotificationService::ReadNextTriggerTimestamp() {
-    content::BrowserContext* browser_context) {
   return base::Time::Max();
 }
 

atom/browser/notifications/platform_notification_service.h

@@ -8,7 +8,6 @@
 #include <set>
 #include <string>
 
-#include "content/public/browser/browser_context.h"
 #include "content/public/browser/platform_notification_service.h"
 
 namespace atom {
@@ -25,34 +24,25 @@ class PlatformNotificationService
   // content::PlatformNotificationService:
   void DisplayNotification(
       content::RenderProcessHost* render_process_host,
-      content::BrowserContext* browser_context,
       const std::string& notification_id,
       const GURL& origin,
       const blink::PlatformNotificationData& notification_data,
       const blink::NotificationResources& notification_resources) override;
   void DisplayPersistentNotification(
-      content::BrowserContext* browser_context,
       const std::string& notification_id,
       const GURL& service_worker_scope,
       const GURL& origin,
       const blink::PlatformNotificationData& notification_data,
       const blink::NotificationResources& notification_resources) override;
-  void ClosePersistentNotification(content::BrowserContext* browser_context,
+  void ClosePersistentNotification(const std::string& notification_id) override;
-                                   const std::string& notification_id) override;
+  void CloseNotification(const std::string& notification_id) override;
-  void CloseNotification(content::BrowserContext* browser_context,
-                         const std::string& notification_id) override;
   void GetDisplayedNotifications(
-      content::BrowserContext* browser_context,
       DisplayedNotificationsCallback callback) override;
-  int64_t ReadNextPersistentNotificationId(
+  int64_t ReadNextPersistentNotificationId() override;
-      content::BrowserContext* browser_context) override;
   void RecordNotificationUkmEvent(
-      content::BrowserContext* browser_context,
       const content::NotificationDatabaseData& data) override;
-  void ScheduleTrigger(content::BrowserContext* browser_context,
+  void ScheduleTrigger(base::Time timestamp) override;
-                       base::Time timestamp) override;
+  base::Time ReadNextTriggerTimestamp() override;
-  base::Time ReadNextTriggerTimestamp(
-      content::BrowserContext* browser_context) override;
 
  private:
   AtomBrowserClient* browser_client_;

atom/browser/notifications/win/notification_presenter_win.cc

@@ -14,7 +14,7 @@
 #include "atom/browser/notifications/win/windows_toast_notification.h"
 #include "base/environment.h"
 #include "base/files/file_util.h"
-#include "base/md5.h"
+#include "base/hash/md5.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/time/time.h"
@@ -47,7 +47,7 @@ bool SaveIconToPath(const SkBitmap& bitmap, const base::FilePath& path) {
 // static
 NotificationPresenter* NotificationPresenter::Create() {
   auto version = base::win::GetVersion();
-  if (version < base::win::VERSION_WIN8)
+  if (version < base::win::Version::WIN8)
     return new NotificationPresenterWin7;
   if (!WindowsToastNotification::Initialize())
     return nullptr;

atom/browser/osr/osr_host_display_client.cc

@@ -6,6 +6,7 @@
 
 #include <utility>
 
+#include "base/memory/shared_memory.h"
 #include "components/viz/common/resources/resource_format.h"
 #include "components/viz/common/resources/resource_sizes.h"
 #include "mojo/public/cpp/system/platform_handle.h"

atom/browser/osr/osr_host_display_client.h

@@ -8,7 +8,7 @@
 #include <memory>
 
 #include "base/callback.h"
-#include "base/memory/shared_memory.h"
+#include "base/memory/shared_memory_mapping.h"
 #include "components/viz/host/host_display_client.h"
 #include "services/viz/privileged/interfaces/compositing/layered_window_updater.mojom.h"
 #include "third_party/skia/include/core/SkBitmap.h"

atom/browser/osr/osr_render_widget_host_view.cc

@@ -351,7 +351,7 @@ void OffScreenRenderWidgetHostView::SetBounds(const gfx::Rect& new_bounds) {
   SetSize(new_bounds.size());
 }
 
-gfx::NativeView OffScreenRenderWidgetHostView::GetNativeView() const {
+gfx::NativeView OffScreenRenderWidgetHostView::GetNativeView() {
   return gfx::NativeView();
 }
 
@@ -366,11 +366,11 @@ ui::TextInputClient* OffScreenRenderWidgetHostView::GetTextInputClient() {
 
 void OffScreenRenderWidgetHostView::Focus() {}
 
-bool OffScreenRenderWidgetHostView::HasFocus() const {
+bool OffScreenRenderWidgetHostView::HasFocus() {
   return false;
 }
 
-bool OffScreenRenderWidgetHostView::IsSurfaceAvailableForCopy() const {
+bool OffScreenRenderWidgetHostView::IsSurfaceAvailableForCopy() {
   return GetDelegatedFrameHost()->CanCopyFromCompositingSurface();
 }
 
@@ -411,7 +411,7 @@ void OffScreenRenderWidgetHostView::EnsureSurfaceSynchronizedForWebTest() {
   SynchronizeVisualProperties();
 }
 
-gfx::Rect OffScreenRenderWidgetHostView::GetViewBounds() const {
+gfx::Rect OffScreenRenderWidgetHostView::GetViewBounds() {
   if (IsPopupWidget())
     return popup_position_;
 
@@ -429,8 +429,7 @@ void OffScreenRenderWidgetHostView::SetBackgroundColor(SkColor color) {
   }
 }
 
-base::Optional<SkColor> OffScreenRenderWidgetHostView::GetBackgroundColor()
+base::Optional<SkColor> OffScreenRenderWidgetHostView::GetBackgroundColor() {
-    const {
   return background_color_;
 }
 
@@ -438,7 +437,7 @@ void OffScreenRenderWidgetHostView::UpdateBackgroundColor() {
   NOTREACHED();
 }
 
-gfx::Size OffScreenRenderWidgetHostView::GetVisibleViewportSize() const {
+gfx::Size OffScreenRenderWidgetHostView::GetVisibleViewportSize() {
   return size_;
 }
 
@@ -532,8 +531,7 @@ void OffScreenRenderWidgetHostView::TextInputStateChanged(
 
 void OffScreenRenderWidgetHostView::ImeCancelComposition() {}
 
-void OffScreenRenderWidgetHostView::RenderProcessGone(base::TerminationStatus,
+void OffScreenRenderWidgetHostView::RenderProcessGone() {
-                                                      int) {
   Destroy();
 }
 
@@ -580,7 +578,7 @@ void OffScreenRenderWidgetHostView::CopyFromSurface(
 }
 
 void OffScreenRenderWidgetHostView::GetScreenInfo(
-    content::ScreenInfo* screen_info) const {
+    content::ScreenInfo* screen_info) {
   screen_info->depth = 24;
   screen_info->depth_per_component = 8;
   screen_info->orientation_angle = 0;
@@ -621,8 +619,7 @@ void OffScreenRenderWidgetHostView::ImeCompositionRangeChanged(
     const gfx::Range&,
     const std::vector<gfx::Rect>&) {}
 
-gfx::Size OffScreenRenderWidgetHostView::GetCompositorViewportPixelSize()
+gfx::Size OffScreenRenderWidgetHostView::GetCompositorViewportPixelSize() {
-    const {
   return gfx::ScaleToCeiledSize(GetRequestedRendererSize(),
                                 current_device_scale_factor_);
 }

atom/browser/osr/osr_render_widget_host_view.h

@@ -84,22 +84,22 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   void InitAsChild(gfx::NativeView) override;
   void SetSize(const gfx::Size&) override;
   void SetBounds(const gfx::Rect&) override;
-  gfx::NativeView GetNativeView(void) const override;
+  gfx::NativeView GetNativeView(void) override;
   gfx::NativeViewAccessible GetNativeViewAccessible(void) override;
   ui::TextInputClient* GetTextInputClient() override;
   void Focus(void) override;
-  bool HasFocus(void) const override;
+  bool HasFocus(void) override;
   uint32_t GetCaptureSequenceNumber() const override;
-  bool IsSurfaceAvailableForCopy(void) const override;
+  bool IsSurfaceAvailableForCopy(void) override;
   void Show(void) override;
   void Hide(void) override;
   bool IsShowing(void) override;
   void EnsureSurfaceSynchronizedForWebTest() override;
-  gfx::Rect GetViewBounds(void) const override;
+  gfx::Rect GetViewBounds(void) override;
-  gfx::Size GetVisibleViewportSize() const override;
+  gfx::Size GetVisibleViewportSize() override;
   void SetInsets(const gfx::Insets&) override;
   void SetBackgroundColor(SkColor color) override;
-  base::Optional<SkColor> GetBackgroundColor() const override;
+  base::Optional<SkColor> GetBackgroundColor() override;
   void UpdateBackgroundColor() override;
   bool LockMouse(void) override;
   void UnlockMouse(void) override;
@@ -131,7 +131,7 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   void SetIsLoading(bool is_loading) override;
   void TextInputStateChanged(const content::TextInputState& params) override;
   void ImeCancelComposition(void) override;
-  void RenderProcessGone(base::TerminationStatus, int) override;
+  void RenderProcessGone() override;
   void Destroy(void) override;
   void SetTooltipText(const base::string16&) override;
   content::CursorManager* GetCursorManager() override;
@@ -139,7 +139,7 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
       const gfx::Rect& src_rect,
       const gfx::Size& output_size,
       base::OnceCallback<void(const SkBitmap&)> callback) override;
-  void GetScreenInfo(content::ScreenInfo* results) const override;
+  void GetScreenInfo(content::ScreenInfo* results) override;
   void InitAsGuest(content::RenderWidgetHostView*,
                    content::RenderWidgetHostViewGuest*) override;
   void TransformPointToRootSurface(gfx::PointF* point) override;
@@ -149,7 +149,7 @@ class OffScreenRenderWidgetHostView : public content::RenderWidgetHostViewBase,
   CreateSyntheticGestureTarget() override;
   void ImeCompositionRangeChanged(const gfx::Range&,
                                   const std::vector<gfx::Rect>&) override;
-  gfx::Size GetCompositorViewportPixelSize() const override;
+  gfx::Size GetCompositorViewportPixelSize() override;
 
   content::RenderWidgetHostViewBase* CreateViewForWidget(
       content::RenderWidgetHost*,

atom/browser/resources/mac/Info.plist

@@ -17,9 +17,9 @@
     <key>CFBundleIconFile</key>
     <string>electron.icns</string>
     <key>CFBundleVersion</key>
-    <string>6.0.0-nightly.20190404</string>
+    <string>6.0.0-beta.4</string>
     <key>CFBundleShortVersionString</key>
-    <string>6.0.0-nightly.20190404</string>
+    <string>6.0.0-beta.4</string>
     <key>LSApplicationCategoryType</key>
     <string>public.app-category.developer-tools</string>
     <key>LSMinimumSystemVersion</key>

atom/browser/resources/win/atom.rc

@@ -50,8 +50,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 6,0,0,20190404
+ FILEVERSION 6,0,0,4
- PRODUCTVERSION 6,0,0,20190404
+ PRODUCTVERSION 6,0,0,4
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L

atom/browser/ui/cocoa/NSColor+Hex.h

@@ -10,6 +10,8 @@
 #import <Cocoa/Cocoa.h>
 
 @interface NSColor (Hex)
+- (NSString*)hexadecimalValue;
+- (NSString*)RGBAValue;
 + (NSColor*)colorWithHexColorString:(NSString*)hex;
 @end
 

atom/browser/ui/cocoa/NSColor+Hex.mm

@@ -8,17 +8,65 @@
 
 @implementation NSColor (Hex)
 
+- (NSString*)RGBAValue {
+  double redFloatValue, greenFloatValue, blueFloatValue, alphaFloatValue;
+
+  NSColor* convertedColor =
+      [self colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
+
+  if (convertedColor) {
+    [convertedColor getRed:&redFloatValue
+                     green:&greenFloatValue
+                      blue:&blueFloatValue
+                     alpha:&alphaFloatValue];
+
+    int redIntValue = redFloatValue * 255.99999f;
+    int greenIntValue = greenFloatValue * 255.99999f;
+    int blueIntValue = blueFloatValue * 255.99999f;
+    int alphaIntValue = alphaFloatValue * 255.99999f;
+
+    return
+        [NSString stringWithFormat:@"%02x%02x%02x%02x", redIntValue,
+                                   greenIntValue, blueIntValue, alphaIntValue];
+  }
+
+  return nil;
+}
+
+- (NSString*)hexadecimalValue {
+  double redFloatValue, greenFloatValue, blueFloatValue;
+
+  NSColor* convertedColor =
+      [self colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
+
+  if (convertedColor) {
+    [convertedColor getRed:&redFloatValue
+                     green:&greenFloatValue
+                      blue:&blueFloatValue
+                     alpha:NULL];
+
+    int redIntValue = redFloatValue * 255.99999f;
+    int greenIntValue = greenFloatValue * 255.99999f;
+    int blueIntValue = blueFloatValue * 255.99999f;
+
+    return [NSString stringWithFormat:@"#%02x%02x%02x", redIntValue,
+                                      greenIntValue, blueIntValue];
+  }
+
+  return nil;
+}
+
 + (NSColor*)colorWithHexColorString:(NSString*)inColorString {
   unsigned colorCode = 0;
-  unsigned char redByte, greenByte, blueByte;
 
   if (inColorString) {
     NSScanner* scanner = [NSScanner scannerWithString:inColorString];
     (void)[scanner scanHexInt:&colorCode];  // ignore error
   }
-  redByte = (unsigned char)(colorCode >> 16);
+
-  greenByte = (unsigned char)(colorCode >> 8);
+  unsigned char redByte = (unsigned char)(colorCode >> 16);
-  blueByte = (unsigned char)(colorCode);  // masks off high bits
+  unsigned char greenByte = (unsigned char)(colorCode >> 8);
+  unsigned char blueByte = (unsigned char)(colorCode);  // masks off high bits
 
   return [NSColor colorWithCalibratedRed:(CGFloat)redByte / 0xff
                                    green:(CGFloat)greenByte / 0xff

atom/browser/ui/file_dialog_win.cc

@@ -117,7 +117,7 @@ void RunSaveDialogInNewThread(const RunState& run_state,
   bool result = ShowSaveDialogSync(settings, &path);
   run_state.ui_task_runner->PostTask(
       FROM_HERE,
-      base::BindOnce(&OnSaveDialogDone, std::move(promise), result, path));
+      base::BindOnce(&OnSaveDialogDone, std::move(promise), !result, path));
   run_state.ui_task_runner->DeleteSoon(FROM_HERE, run_state.dialog_thread);
 }
 
@@ -320,7 +320,7 @@ void ShowSaveDialog(const DialogSettings& settings,
   RunState run_state;
   if (!CreateDialogThread(&run_state)) {
     mate::Dictionary dict = mate::Dictionary::CreateEmpty(promise.isolate());
-    dict.Set("canceled", false);
+    dict.Set("canceled", true);
     dict.Set("filePath", base::FilePath());
     promise.Resolve(dict.GetHandle());
   } else {

atom/browser/ui/inspectable_web_contents_impl.cc

@@ -41,6 +41,7 @@
 #include "net/http/http_response_headers.h"
 #include "services/network/public/cpp/simple_url_loader.h"
 #include "services/network/public/cpp/simple_url_loader_stream_consumer.h"
+#include "third_party/blink/public/common/logging/logging_utils.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 
@@ -779,11 +780,13 @@ void InspectableWebContentsImpl::WebContentsDestroyed() {
 
 bool InspectableWebContentsImpl::DidAddMessageToConsole(
     content::WebContents* source,
-    int32_t level,
+    blink::mojom::ConsoleMessageLevel level,
     const base::string16& message,
     int32_t line_no,
     const base::string16& source_id) {
-  logging::LogMessage("CONSOLE", line_no, level).stream()
+  logging::LogMessage("CONSOLE", line_no,
+                      blink::ConsoleMessageLevelToLogSeverity(level))
+          .stream()
       << "\"" << message << "\", source: " << source_id << " (" << line_no
       << ")";
   return true;

atom/browser/ui/inspectable_web_contents_impl.h

@@ -143,6 +143,9 @@ class InspectableWebContentsImpl
                                  int boundary_value) override {}
   void ReadyForTest() override {}
   void SetOpenNewWindowForPopups(bool value) override {}
+  void RecordPerformanceHistogram(const std::string& name,
+                                  double duration) override {}
+  void RecordUserMetricsAction(const std::string& name) override {}
 
   // content::DevToolsFrontendHostDelegate:
   void HandleMessageFromDevToolsFrontend(const std::string& message);
@@ -165,7 +168,7 @@ class InspectableWebContentsImpl
 
   // content::WebContentsDelegate:
   bool DidAddMessageToConsole(content::WebContents* source,
-                              int32_t level,
+                              blink::mojom::ConsoleMessageLevel level,
                               const base::string16& message,
                               int32_t line_no,
                               const base::string16& source_id) override;

atom/browser/ui/views/autofill_popup_view.cc

@@ -150,10 +150,10 @@ void AutofillPopupView::OnSelectedRowChanged(
 
   if (current_row_selection) {
     int selected = current_row_selection.value_or(-1);
-    if (selected == -1 || selected >= child_count())
+    if (selected == -1 || static_cast<size_t>(selected) >= children().size())
       return;
-    child_at(selected)->NotifyAccessibilityEvent(ax::mojom::Event::kSelection,
+    children().at(selected)->NotifyAccessibilityEvent(
-                                                 true);
+        ax::mojom::Event::kSelection, true);
   }
 }
 
@@ -232,7 +232,8 @@ void AutofillPopupView::DoUpdateBoundsAndRedrawPopup() {
 }
 
 void AutofillPopupView::OnPaint(gfx::Canvas* canvas) {
-  if (!popup_ || popup_->GetLineCount() != child_count())
+  if (!popup_ ||
+      static_cast<size_t>(popup_->GetLineCount()) != children().size())
     return;
   gfx::Canvas* draw_canvas = canvas;
   SkBitmap bitmap;

atom/browser/ui/views/menu_bar.cc

@@ -255,7 +255,7 @@ const char* MenuBar::GetClassName() const {
   return kViewClassName;
 }
 
-void MenuBar::OnMenuButtonClicked(views::MenuButton* source,
+void MenuBar::OnMenuButtonClicked(views::Button* source,
                                   const gfx::Point& point,
                                   const ui::Event* event) {
   // Hide the accelerator when a submenu is activated.

atom/browser/ui/views/menu_bar.h

@@ -16,8 +16,9 @@
 #include "ui/views/view.h"
 
 namespace views {
+class Button;
 class MenuButton;
-}
+}  // namespace views
 
 namespace atom {
 
@@ -78,7 +79,7 @@ class MenuBar : public views::AccessiblePaneView,
   const char* GetClassName() const override;
 
   // views::MenuButtonListener:
-  void OnMenuButtonClicked(views::MenuButton* source,
+  void OnMenuButtonClicked(views::Button* source,
                            const gfx::Point& point,
                            const ui::Event* event) override;
   void OnNativeThemeChanged(const ui::NativeTheme* theme) override;

atom/browser/ui/views/menu_delegate.cc

@@ -22,7 +22,7 @@ MenuDelegate::MenuDelegate(MenuBar* menu_bar)
 MenuDelegate::~MenuDelegate() {}
 
 void MenuDelegate::RunMenu(AtomMenuModel* model,
-                           views::MenuButton* button,
+                           views::Button* button,
                            ui::MenuSourceType source_type) {
   gfx::Point screen_loc;
   views::View::ConvertPointToScreen(button, &screen_loc);
@@ -43,8 +43,10 @@ void MenuDelegate::RunMenu(AtomMenuModel* model,
   menu_runner_.reset(new views::MenuRunner(
       item,
       views::MenuRunner::CONTEXT_MENU | views::MenuRunner::HAS_MNEMONICS));
-  menu_runner_->RunMenuAt(button->GetWidget()->GetTopLevelWidget(), button,
+  menu_runner_->RunMenuAt(
-                          bounds, views::MENU_ANCHOR_TOPRIGHT, source_type);
+      button->GetWidget()->GetTopLevelWidget(),
+      static_cast<views::MenuButton*>(button)->button_controller(), bounds,
+      views::MenuAnchorPosition::kTopRight, source_type);
 }
 
 void MenuDelegate::ExecuteCommand(int id) {

atom/browser/ui/views/menu_delegate.h

@@ -13,7 +13,8 @@
 
 namespace views {
 class MenuRunner;
-}
+class Button;
+}  // namespace views
 
 namespace atom {
 
@@ -25,7 +26,7 @@ class MenuDelegate : public views::MenuDelegate {
   ~MenuDelegate() override;
 
   void RunMenu(AtomMenuModel* model,
-               views::MenuButton* button,
+               views::Button* button,
                ui::MenuSourceType source_type);
 
   class Observer {

atom/browser/ui/views/root_view.cc

@@ -92,10 +92,10 @@ void RootView::SetMenuBarVisibility(bool visible) {
 
   menu_bar_visible_ = visible;
   if (visible) {
-    DCHECK_EQ(child_count(), 1);
+    DCHECK_EQ(children().size(), 1ul);
     AddChildView(menu_bar_.get());
   } else {
-    DCHECK_EQ(child_count(), 2);
+    DCHECK_EQ(children().size(), 2ul);
     RemoveChildView(menu_bar_.get());
   }
 

atom/browser/ui/win/jump_list.cc

@@ -23,6 +23,7 @@ bool AppendTask(const JumpListItem& item, IObjectCollection* collection) {
   if (FAILED(link.CoCreateInstance(CLSID_ShellLink)) ||
       FAILED(link->SetPath(item.path.value().c_str())) ||
       FAILED(link->SetArguments(item.arguments.c_str())) ||
+      FAILED(link->SetWorkingDirectory(item.working_dir.value().c_str())) ||
       FAILED(link->SetDescription(item.description.c_str())))
     return false;
 
@@ -86,6 +87,8 @@ bool ConvertShellLinkToJumpListItem(IShellLink* shell_link,
   if (FAILED(shell_link->GetPath(path, MAX_PATH, nullptr, 0)))
     return false;
 
+  item->path = base::FilePath(path);
+
   CComQIPtr<IPropertyStore> property_store = shell_link;
   base::win::ScopedPropVariant prop;
   if (SUCCEEDED(
@@ -99,6 +102,9 @@ bool ConvertShellLinkToJumpListItem(IShellLink* shell_link,
     item->title = prop.get().pwszVal;
   }
 
+  if (SUCCEEDED(shell_link->GetWorkingDirectory(path, base::size(path))))
+    item->working_dir = base::FilePath(path);
+
   int icon_index;
   if (SUCCEEDED(shell_link->GetIconLocation(path, MAX_PATH, &icon_index))) {
     item->icon_path = base::FilePath(path);

atom/browser/ui/win/jump_list.h

@@ -49,6 +49,7 @@ struct JumpListItem {
   base::string16 arguments;
   base::string16 title;
   base::string16 description;
+  base::FilePath working_dir;
   base::FilePath icon_path;
   int icon_index = 0;
 

atom/browser/ui/win/notify_icon.cc

@@ -169,7 +169,8 @@ void NotifyIcon::PopUpContextMenu(const gfx::Point& pos,
       views::MenuRunner::CONTEXT_MENU | views::MenuRunner::HAS_MNEMONICS,
       base::Bind(&NotifyIcon::OnContextMenuClosed,
                  weak_factory_.GetWeakPtr())));
-  menu_runner_->RunMenuAt(widget_.get(), NULL, rect, views::MENU_ANCHOR_TOPLEFT,
+  menu_runner_->RunMenuAt(widget_.get(), NULL, rect,
+                          views::MenuAnchorPosition::kTopLeft,
                           ui::MENU_SOURCE_MOUSE);
 }
 

atom/browser/web_contents_preferences.cc

@@ -128,10 +128,10 @@ WebContentsPreferences::WebContentsPreferences(
   SetDefaultBoolIfUndefined(options::kNativeWindowOpen, false);
   SetDefaultBoolIfUndefined(options::kEnableRemoteModule, true);
   SetDefaultBoolIfUndefined(options::kContextIsolation, false);
-  SetDefaultBoolIfUndefined("javascript", true);
+  SetDefaultBoolIfUndefined(options::kJavaScript, true);
-  SetDefaultBoolIfUndefined("images", true);
+  SetDefaultBoolIfUndefined(options::kImages, true);
-  SetDefaultBoolIfUndefined("textAreasAreResizable", true);
+  SetDefaultBoolIfUndefined(options::kTextAreasAreResizable, true);
-  SetDefaultBoolIfUndefined("webgl", true);
+  SetDefaultBoolIfUndefined(options::kWebGL, true);
   bool webSecurity = true;
   SetDefaultBoolIfUndefined(options::kWebSecurity, webSecurity);
   // If webSecurity was explicity set to false, let's inherit that into
@@ -335,13 +335,13 @@ void WebContentsPreferences::AppendCommandLineSwitches(
   int guest_instance_id = 0;
   if (GetAsInteger(&preference_, options::kGuestInstanceID, &guest_instance_id))
     command_line->AppendSwitchASCII(switches::kGuestInstanceID,
-                                    base::IntToString(guest_instance_id));
+                                    base::NumberToString(guest_instance_id));
 
   // Pass the opener's window id.
   int opener_id;
   if (GetAsInteger(&preference_, options::kOpenerID, &opener_id))
     command_line->AppendSwitchASCII(switches::kOpenerID,
-                                    base::IntToString(opener_id));
+                                    base::NumberToString(opener_id));
 
 #if defined(OS_MACOSX)
   // Enable scroll bounce.
@@ -405,19 +405,20 @@ void WebContentsPreferences::AppendCommandLineSwitches(
 
 void WebContentsPreferences::OverrideWebkitPrefs(
     content::WebPreferences* prefs) {
-  prefs->javascript_enabled = IsEnabled("javascript", true /* default_value */);
+  prefs->javascript_enabled =
-  prefs->images_enabled = IsEnabled("images", true /* default_value */);
+      IsEnabled(options::kJavaScript, true /* default_value */);
+  prefs->images_enabled = IsEnabled(options::kImages, true /* default_value */);
   prefs->text_areas_are_resizable =
-      IsEnabled("textAreasAreResizable", true /* default_value */);
+      IsEnabled(options::kTextAreasAreResizable, true /* default_value */);
   prefs->navigate_on_drag_drop =
-      IsEnabled("navigateOnDragDrop", false /* default_value */);
+      IsEnabled(options::kNavigateOnDragDrop, false /* default_value */);
   if (!GetAsAutoplayPolicy(&preference_, "autoplayPolicy",
                            &prefs->autoplay_policy)) {
     prefs->autoplay_policy = content::AutoplayPolicy::kNoUserGestureRequired;
   }
 
   // Check if webgl should be enabled.
-  bool is_webgl_enabled = IsEnabled("webgl", true /* default_value */);
+  bool is_webgl_enabled = IsEnabled(options::kWebGL, true /* default_value */);
   prefs->webgl1_enabled = is_webgl_enabled;
   prefs->webgl2_enabled = is_webgl_enabled;
 

atom/browser/web_dialog_helper.cc

@@ -24,6 +24,7 @@
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
+#include "native_mate/dictionary.h"
 #include "net/base/mime_util.h"
 #include "ui/shell_dialogs/selected_file_info.h"
 
@@ -51,9 +52,10 @@ class FileSelectHelper : public base::RefCounted<FileSelectHelper>,
     v8::Isolate* isolate = v8::Isolate::GetCurrent();
     atom::util::Promise promise(isolate);
 
-    file_dialog::ShowOpenDialog(settings, std::move(promise));
     auto callback = base::Bind(&FileSelectHelper::OnOpenDialogDone, this);
     ignore_result(promise.Then(callback));
+
+    file_dialog::ShowOpenDialog(settings, std::move(promise));
   }
 
   void ShowSaveDialog(const file_dialog::DialogSettings& settings) {
@@ -74,45 +76,43 @@ class FileSelectHelper : public base::RefCounted<FileSelectHelper>,
 
   ~FileSelectHelper() override {}
 
-#if defined(MAS_BUILD)
+  void OnOpenDialogDone(mate::Dictionary result) {
-  void OnOpenDialogDone(bool result,
-                        const std::vector<base::FilePath>& paths,
-                        const std::vector<std::string>& bookmarks)
-#else
-  void OnOpenDialogDone(bool result, const std::vector<base::FilePath>& paths)
-#endif
-  {
     std::vector<FileChooserFileInfoPtr> file_info;
-    if (result) {
+    bool canceled = true;
-      for (auto& path : paths) {
+    result.Get("canceled", &canceled);
-        file_info.push_back(FileChooserFileInfo::NewNativeFile(
-            blink::mojom::NativeFileInfo::New(
-                path, path.BaseName().AsUTF16Unsafe())));
-      }
 
-      if (render_frame_host_ && !paths.empty()) {
+    if (!canceled) {
-        auto* browser_context = static_cast<atom::AtomBrowserContext*>(
+      std::vector<base::FilePath> paths;
-            render_frame_host_->GetProcess()->GetBrowserContext());
+      if (result.Get("filePaths", &paths)) {
-        browser_context->prefs()->SetFilePath(prefs::kSelectFileLastDirectory,
+        for (auto& path : paths) {
-                                              paths[0].DirName());
+          file_info.push_back(FileChooserFileInfo::NewNativeFile(
+              blink::mojom::NativeFileInfo::New(
+                  path, path.BaseName().AsUTF16Unsafe())));
+        }
+
+        if (render_frame_host_ && !paths.empty()) {
+          auto* browser_context = static_cast<atom::AtomBrowserContext*>(
+              render_frame_host_->GetProcess()->GetBrowserContext());
+          browser_context->prefs()->SetFilePath(prefs::kSelectFileLastDirectory,
+                                                paths[0].DirName());
+        }
       }
     }
     OnFilesSelected(std::move(file_info));
   }
 
-#if defined(MAS_BUILD)
+  void OnSaveDialogDone(mate::Dictionary result) {
-  void OnSaveDialogDone(bool result,
-                        const base::FilePath& path,
-                        const std::string& bookmark)
-#else
-  void OnSaveDialogDone(bool result, const base::FilePath& path)
-#endif
-  {
     std::vector<FileChooserFileInfoPtr> file_info;
-    if (result) {
+    bool canceled = true;
-      file_info.push_back(
+    result.Get("canceled", &canceled);
-          FileChooserFileInfo::NewNativeFile(blink::mojom::NativeFileInfo::New(
+
-              path, path.BaseName().AsUTF16Unsafe())));
+    if (!canceled) {
+      base::FilePath path;
+      if (result.Get("filePath", &path)) {
+        file_info.push_back(FileChooserFileInfo::NewNativeFile(
+            blink::mojom::NativeFileInfo::New(
+                path, path.BaseName().AsUTF16Unsafe())));
+      }
     }
     OnFilesSelected(std::move(file_info));
   }
@@ -123,7 +123,6 @@ class FileSelectHelper : public base::RefCounted<FileSelectHelper>,
       listener_.reset();
     }
     render_frame_host_ = nullptr;
-    Release();
   }
 
   // content::WebContentsObserver:

atom/common/api/api_messages.h

@@ -18,7 +18,7 @@
 // The message starter should be declared in ipc/ipc_message_start.h. Since
 // we don't want to patch Chromium, we just pretend to be Content Shell.
 
-#define IPC_MESSAGE_START ShellMsgStart
+#define IPC_MESSAGE_START ElectronMsgStart
 
 IPC_STRUCT_TRAITS_BEGIN(atom::DraggableRegion)
   IPC_STRUCT_TRAITS_MEMBER(draggable)

atom/common/api/atom_api_asar.cc

@@ -117,16 +117,11 @@ class Archive : public mate::Wrappable<Archive> {
   DISALLOW_COPY_AND_ASSIGN(Archive);
 };
 
-void InitAsarSupport(v8::Isolate* isolate,
+void InitAsarSupport(v8::Isolate* isolate, v8::Local<v8::Value> require) {
-                     v8::Local<v8::Value> source,
-                     v8::Local<v8::Value> require) {
   // Evaluate asar_init.js.
   std::vector<v8::Local<v8::String>> asar_init_params = {
-      node::FIXED_ONE_BYTE_STRING(isolate, "source"),
       node::FIXED_ONE_BYTE_STRING(isolate, "require")};
-
+  std::vector<v8::Local<v8::Value>> asar_init_args = {require};
-  std::vector<v8::Local<v8::Value>> asar_init_args = {source, require};
-
   node::per_process::native_module_loader.CompileAndCall(
       isolate->GetCurrentContext(), "electron/js2c/asar_init",
       &asar_init_params, &asar_init_args, nullptr);

atom/common/api/atom_api_v8_util.cc

@@ -11,7 +11,7 @@
 #include "atom/common/native_mate_converters/content_converter.h"
 #include "atom/common/native_mate_converters/gurl_converter.h"
 #include "atom/common/node_includes.h"
-#include "base/hash.h"
+#include "base/hash/hash.h"
 #include "native_mate/dictionary.h"
 #include "url/origin.h"
 #include "v8/include/v8-profiler.h"
@@ -41,8 +41,12 @@ struct Converter<std::pair<Type1, Type2>> {
     v8::Local<v8::Array> array(v8::Local<v8::Array>::Cast(val));
     if (array->Length() != 2)
       return false;
-    return Converter<Type1>::FromV8(isolate, array->Get(0), &out->first) &&
+
-           Converter<Type2>::FromV8(isolate, array->Get(1), &out->second);
+    auto context = isolate->GetCurrentContext();
+    return Converter<Type1>::FromV8(
+               isolate, array->Get(context, 0).ToLocalChecked(), &out->first) &&
+           Converter<Type2>::FromV8(
+               isolate, array->Get(context, 1).ToLocalChecked(), &out->second);
   }
 };
 

atom/common/atom_version.h

@@ -9,7 +9,7 @@
 #define ATOM_MINOR_VERSION 0
 #define ATOM_PATCH_VERSION 0
 // clang-format off
-#define ATOM_PRE_RELEASE_VERSION -nightly.20190404
+#define ATOM_PRE_RELEASE_VERSION -beta.4
 // clang-format on
 
 #ifndef ATOM_STRINGIFY

atom/common/crash_reporter/crash_reporter_win.cc

@@ -139,6 +139,7 @@ void UnregisterNonABICompliantCodeRange(void* start) {
 
   RtlDeleteFunctionTable(&record->runtime_function);
 }
+
 #endif  // _WIN64
 
 }  // namespace
@@ -193,6 +194,7 @@ void CrashReporterWin::InitBreakpad(const std::string& product_name,
     v8::Isolate::GetCurrent()->GetCodeRange(&code_range, &size);
     if (code_range && size &&
         RegisterNonABICompliantCodeRange(code_range, size)) {
+      // FIXME(nornagon): This broke with https://crrev.com/c/1474703
       gin::Debug::SetCodeRangeDeletedCallback(
           UnregisterNonABICompliantCodeRange);
     }

atom/common/crash_reporter/win/crash_service.cc

@@ -92,7 +92,7 @@ bool WriteReportIDToFile(const std::wstring& dump_path,
 
   int64_t seconds_since_epoch =
       (base::Time::Now() - base::Time::UnixEpoch()).InSeconds();
-  std::wstring line = base::Int64ToString16(seconds_since_epoch);
+  std::wstring line = base::NumberToString16(seconds_since_epoch);
   line += L',';
   line += report_id;
   line += L'\n';

atom/common/native_mate_converters/callback.cc

@@ -147,7 +147,8 @@ v8::Local<v8::Value> BindFunctionWith(v8::Isolate* isolate,
                                       v8::Local<v8::Function> func,
                                       v8::Local<v8::Value> arg1,
                                       v8::Local<v8::Value> arg2) {
-  v8::MaybeLocal<v8::Value> bind = func->Get(mate::StringToV8(isolate, "bind"));
+  v8::MaybeLocal<v8::Value> bind =
+      func->Get(context, mate::StringToV8(isolate, "bind"));
   CHECK(!bind.IsEmpty());
   v8::Local<v8::Function> bind_func =
       v8::Local<v8::Function>::Cast(bind.ToLocalChecked());

atom/common/native_mate_converters/net_converter.cc

@@ -50,15 +50,15 @@ bool CertFromData(const std::string& data,
 }  // namespace
 
 // static
-v8::Local<v8::Value> Converter<const net::AuthChallengeInfo*>::ToV8(
+v8::Local<v8::Value> Converter<net::AuthChallengeInfo>::ToV8(
     v8::Isolate* isolate,
-    const net::AuthChallengeInfo* val) {
+    const net::AuthChallengeInfo& val) {
   mate::Dictionary dict = mate::Dictionary::CreateEmpty(isolate);
-  dict.Set("isProxy", val->is_proxy);
+  dict.Set("isProxy", val.is_proxy);
-  dict.Set("scheme", val->scheme);
+  dict.Set("scheme", val.scheme);
-  dict.Set("host", val->challenger.host());
+  dict.Set("host", val.challenger.host());
-  dict.Set("port", static_cast<uint32_t>(val->challenger.port()));
+  dict.Set("port", static_cast<uint32_t>(val.challenger.port()));
-  dict.Set("realm", val->realm);
+  dict.Set("realm", val.realm);
   return mate::ConvertToV8(isolate, dict);
 }
 
@@ -210,7 +210,8 @@ bool Converter<net::HttpResponseHeaders*>::FromV8(
     if (localVal->IsArray()) {
       auto values = v8::Local<v8::Array>::Cast(localVal);
       for (uint32_t j = 0; j < values->Length(); j++) {
-        if (!addHeaderFromValue(key, values->Get(j))) {
+        if (!addHeaderFromValue(key,
+                                values->Get(context, j).ToLocalChecked())) {
           return false;
         }
       }

atom/common/native_mate_converters/net_converter.h

@@ -24,9 +24,9 @@ struct CertPrincipal;
 namespace mate {
 
 template <>
-struct Converter<const net::AuthChallengeInfo*> {
+struct Converter<net::AuthChallengeInfo> {
   static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
-                                   const net::AuthChallengeInfo* val);
+                                   const net::AuthChallengeInfo& val);
 };
 
 template <>

atom/common/native_mate_converters/string16_converter.h

@@ -15,8 +15,9 @@ struct Converter<base::string16> {
   static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
                                    const base::string16& val) {
     return v8::String::NewFromTwoByte(
-        isolate, reinterpret_cast<const uint16_t*>(val.data()),
+               isolate, reinterpret_cast<const uint16_t*>(val.data()),
-        v8::String::kNormalString, val.size());
+               v8::NewStringType::kNormal, val.size())
+        .ToLocalChecked();
   }
   static bool FromV8(v8::Isolate* isolate,
                      v8::Local<v8::Value> val,

atom/common/native_mate_converters/v8_value_converter.cc

@@ -204,6 +204,7 @@ v8::Local<v8::Value> V8ValueConverter::ToV8Array(
     v8::Isolate* isolate,
     const base::ListValue* val) const {
   v8::Local<v8::Array> result(v8::Array::New(isolate, val->GetSize()));
+  auto context = isolate->GetCurrentContext();
 
   for (size_t i = 0; i < val->GetSize(); ++i) {
     const base::Value* child = nullptr;
@@ -212,7 +213,7 @@ v8::Local<v8::Value> V8ValueConverter::ToV8Array(
     v8::Local<v8::Value> child_v8 = ToV8ValueImpl(isolate, child);
 
     v8::TryCatch try_catch(isolate);
-    result->Set(static_cast<uint32_t>(i), child_v8);
+    result->Set(context, static_cast<uint32_t>(i), child_v8).Check();
     if (try_catch.HasCaught())
       LOG(ERROR) << "Setter for index " << i << " threw an exception.";
   }
@@ -330,9 +331,10 @@ std::unique_ptr<base::Value> V8ValueConverter::FromV8ValueImpl(
   if (val->IsDate()) {
     v8::Date* date = v8::Date::Cast(*val);
     v8::Local<v8::Value> toISOString =
-        date->Get(v8::String::NewFromUtf8(isolate, "toISOString",
+        date->Get(context, v8::String::NewFromUtf8(isolate, "toISOString",
-                                          v8::NewStringType::kNormal)
+                                                   v8::NewStringType::kNormal)
-                      .ToLocalChecked());
+                               .ToLocalChecked())
+            .ToLocalChecked();
     if (toISOString->IsFunction()) {
       v8::MaybeLocal<v8::Value> result =
           toISOString.As<v8::Function>()->Call(context, val, 0, nullptr);

atom/common/node_bindings.cc

@@ -130,7 +130,7 @@ namespace {
 // is not modified.
 std::unique_ptr<const char* []> StringVectorToArgArray(
     const std::vector<std::string>& vector) {
-  std::unique_ptr<const char* []> array(new const char*[vector.size()]);
+  std::unique_ptr<const char*[]> array(new const char*[vector.size()]);
   for (size_t i = 0; i < vector.size(); ++i) {
     array[i] = vector[i].c_str();
   }
@@ -324,7 +324,7 @@ node::Environment* NodeBindings::CreateEnvironment(
           .Append(FILE_PATH_LITERAL("init.js"));
   args.insert(args.begin() + 1, script_path.AsUTF8Unsafe());
 
-  std::unique_ptr<const char* []> c_argv = StringVectorToArgArray(args);
+  std::unique_ptr<const char*[]> c_argv = StringVectorToArgArray(args);
   node::Environment* env = node::CreateEnvironment(
       node::CreateIsolateData(context->GetIsolate(), uv_loop_, platform),
       context, args.size(), c_argv.get(), 0, nullptr);

atom/common/node_includes.h

@@ -25,6 +25,13 @@
 #pragma push_macro("CHECK_LE")
 #pragma push_macro("CHECK_LT")
 #pragma push_macro("CHECK_NE")
+#pragma push_macro("DCHECK")
+#pragma push_macro("DCHECK_EQ")
+#pragma push_macro("DCHECK_GE")
+#pragma push_macro("DCHECK_GT")
+#pragma push_macro("DCHECK_LE")
+#pragma push_macro("DCHECK_LT")
+#pragma push_macro("DCHECK_NE")
 #pragma push_macro("DISALLOW_COPY_AND_ASSIGN")
 #pragma push_macro("LIKELY")
 #pragma push_macro("NO_RETURN")
@@ -38,6 +45,13 @@
 #undef CHECK_LE
 #undef CHECK_LT
 #undef CHECK_NE
+#undef DCHECK
+#undef DCHECK_EQ
+#undef DCHECK_GE
+#undef DCHECK_GT
+#undef DCHECK_LE
+#undef DCHECK_LT
+#undef DCHECK_NE
 #undef DISALLOW_COPY_AND_ASSIGN
 #undef LIKELY
 #undef NO_RETURN
@@ -67,6 +81,13 @@
 #pragma pop_macro("CHECK_LE")
 #pragma pop_macro("CHECK_LT")
 #pragma pop_macro("CHECK_NE")
+#pragma pop_macro("DCHECK")
+#pragma pop_macro("DCHECK_EQ")
+#pragma pop_macro("DCHECK_GE")
+#pragma pop_macro("DCHECK_GT")
+#pragma pop_macro("DCHECK_LE")
+#pragma pop_macro("DCHECK_LT")
+#pragma pop_macro("DCHECK_NE")
 #pragma pop_macro("DISALLOW_COPY_AND_ASSIGN")
 #pragma pop_macro("LIKELY")
 #pragma pop_macro("NO_RETURN")

atom/common/options_switches.cc

@@ -160,6 +160,22 @@ const char kNodeIntegrationInSubFrames[] = "nodeIntegrationInSubFrames";
 const char kDisableHtmlFullscreenWindowResize[] =
     "disableHtmlFullscreenWindowResize";
 
+// Enables JavaScript support.
+const char kJavaScript[] = "javascript";
+
+// Enables image support.
+const char kImages[] = "images";
+
+// Make TextArea elements resizable.
+const char kTextAreasAreResizable[] = "textAreasAreResizable";
+
+// Enables WebGL support.
+const char kWebGL[] = "webgl";
+
+// Whether dragging and dropping a file or link onto the page causes a
+// navigation.
+const char kNavigateOnDragDrop[] = "navigateOnDragDrop";
+
 }  // namespace options
 
 namespace switches {
@@ -247,6 +263,9 @@ const char kAuthServerWhitelist[] = "auth-server-whitelist";
 const char kAuthNegotiateDelegateWhitelist[] =
     "auth-negotiate-delegate-whitelist";
 
+// If set, include the port in generated Kerberos SPNs.
+const char kEnableAuthNegotiatePort[] = "enable-auth-negotiate-port";
+
 }  // namespace switches
 
 }  // namespace atom

atom/common/options_switches.h

@@ -77,6 +77,11 @@ extern const char kAllowRunningInsecureContent[];
 extern const char kOffscreen[];
 extern const char kNodeIntegrationInSubFrames[];
 extern const char kDisableHtmlFullscreenWindowResize[];
+extern const char kJavaScript[];
+extern const char kImages[];
+extern const char kTextAreasAreResizable[];
+extern const char kWebGL[];
+extern const char kNavigateOnDragDrop[];
 
 }  // namespace options
 
@@ -121,6 +126,7 @@ extern const char kDiskCacheSize[];
 extern const char kIgnoreConnectionsLimit[];
 extern const char kAuthServerWhitelist[];
 extern const char kAuthNegotiateDelegateWhitelist[];
+extern const char kEnableAuthNegotiatePort[];
 
 }  // namespace switches
 

atom/common/platform_util_win.cc

@@ -341,7 +341,7 @@ bool MoveItemToTrash(const base::FilePath& path) {
   // Elevation prompt enabled for UAC protected files.  This overrides the
   // SILENT, NO_UI and NOERRORUI flags.
 
-  if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
+  if (base::win::GetVersion() >= base::win::Version::WIN8) {
     // Windows 8 introduces the flag RECYCLEONDELETE and deprecates the
     // ALLOWUNDO in favor of ADDUNDORECORD.
     if (FAILED(pfo->SetOperationFlags(

atom/common/promise_util.h

@@ -103,8 +103,24 @@ class Promise {
     return GetInner()->Reject(GetContext(), v8::Undefined(isolate()));
   }
 
-  template <typename ReturnType, typename... ArgTypes>
+  // Please note that using Then is effectively the same as calling .then
-  v8::MaybeLocal<v8::Promise> Then(base::Callback<ReturnType(ArgTypes...)> cb) {
+  // in javascript.  This means (a) it is not type safe and (b) please note
+  // it is NOT type safe.
+  // If the base::Callback you provide here is of type void(boolean) and you
+  // resolve the promise with a string, Electron will compile successfully and
+  // then that promise will be rejected as soon as you try to use it as the
+  // mate converters doing work behind the scenes will throw an error for you.
+  // This can be really hard to trace so until either
+  //   * This helper becomes typesafe (by templating the class instead of each
+  //   method)
+  //   * or the world goes mad
+  // Please try your hardest not to use this method
+  // The world thanks you
+  template <typename... ResolveType>
+  v8::MaybeLocal<v8::Promise> Then(base::Callback<void(ResolveType...)> cb) {
+    static_assert(sizeof...(ResolveType) <= 1,
+                  "A promise's 'Then' callback should only receive at most one "
+                  "parameter");
     v8::HandleScope handle_scope(isolate());
     v8::Context::Scope context_scope(
         v8::Local<v8::Context>::New(isolate(), GetContext()));

atom/renderer/api/atom_api_web_frame.cc

@@ -372,6 +372,9 @@ v8::Local<v8::Promise> ExecuteJavaScriptInIsolatedWorld(
       blink::WebLocalFrame::kSynchronous;
   args->GetNext(&scriptExecutionType);
 
+  // Debugging tip: if you see a crash stack trace beginning from this call,
+  // then it is very likely that some exception happened when executing the
+  // "content_script/init.js" script.
   GetRenderFrame(window)->GetWebFrame()->RequestExecuteScriptInIsolatedWorld(
       world_id, &sources.front(), sources.size(), has_user_gesture,
       scriptExecutionType, new ScriptExecutionCallback(std::move(promise)));

atom/renderer/atom_sandboxed_renderer_client.cc

@@ -44,7 +44,8 @@ bool IsDevToolsExtension(content::RenderFrame* render_frame) {
 }
 
 v8::Local<v8::Object> GetModuleCache(v8::Isolate* isolate) {
-  mate::Dictionary global(isolate, isolate->GetCurrentContext()->Global());
+  auto context = isolate->GetCurrentContext();
+  mate::Dictionary global(isolate, context->Global());
   v8::Local<v8::Value> cache;
 
   if (!global.GetHidden(kModuleCacheKey, &cache)) {
@@ -52,7 +53,7 @@ v8::Local<v8::Object> GetModuleCache(v8::Isolate* isolate) {
     global.SetHidden(kModuleCacheKey, cache);
   }
 
-  return cache->ToObject(isolate);
+  return cache->ToObject(context).ToLocalChecked();
 }
 
 // adapted from node.cc
@@ -95,7 +96,9 @@ void InvokeHiddenCallback(v8::Handle<v8::Context> context,
                           const std::string& hidden_key,
                           const std::string& callback_name) {
   auto* isolate = context->GetIsolate();
-  auto binding_key = mate::ConvertToV8(isolate, hidden_key)->ToString(isolate);
+  auto binding_key = mate::ConvertToV8(isolate, hidden_key)
+                         ->ToString(context)
+                         .ToLocalChecked();
   auto private_binding_key = v8::Private::ForApi(isolate, binding_key);
   auto global_object = context->Global();
   v8::Local<v8::Value> value;
@@ -103,10 +106,11 @@ void InvokeHiddenCallback(v8::Handle<v8::Context> context,
     return;
   if (value.IsEmpty() || !value->IsObject())
     return;
-  auto binding = value->ToObject(isolate);
+  auto binding = value->ToObject(context).ToLocalChecked();
-  auto callback_key =
+  auto callback_key = mate::ConvertToV8(isolate, callback_name)
-      mate::ConvertToV8(isolate, callback_name)->ToString(isolate);
+                          ->ToString(context)
-  auto callback_value = binding->Get(callback_key);
+                          .ToLocalChecked();
+  auto callback_value = binding->Get(context, callback_key).ToLocalChecked();
   DCHECK(callback_value->IsFunction());  // set by sandboxed_renderer/init.js
   auto callback = v8::Handle<v8::Function>::Cast(callback_value);
   ignore_result(callback->Call(context, binding, 0, nullptr));
@@ -241,7 +245,7 @@ void AtomSandboxedRendererClient::SetupMainWorldOverrides(
   auto* isolate = context->GetIsolate();
 
   mate::Dictionary process = mate::Dictionary::CreateEmpty(isolate);
-  process.SetMethod("binding", GetBinding);
+  process.SetMethod("_linkedBinding", GetBinding);
 
   std::vector<v8::Local<v8::String>> isolated_bundle_params = {
       node::FIXED_ONE_BYTE_STRING(isolate, "nodeProcess"),
@@ -263,7 +267,7 @@ void AtomSandboxedRendererClient::SetupExtensionWorldOverrides(
   auto* isolate = context->GetIsolate();
 
   mate::Dictionary process = mate::Dictionary::CreateEmpty(isolate);
-  process.SetMethod("binding", GetBinding);
+  process.SetMethod("_linkedBinding", GetBinding);
 
   std::vector<v8::Local<v8::String>> isolated_bundle_params = {
       node::FIXED_ONE_BYTE_STRING(isolate, "nodeProcess"),

atom/renderer/electron_api_service_impl.cc

@@ -31,13 +31,14 @@ const char kIpcKey[] = "ipcNative";
 // Gets the private object under kIpcKey
 v8::Local<v8::Object> GetIpcObject(v8::Local<v8::Context> context) {
   auto* isolate = context->GetIsolate();
-  auto binding_key = mate::ConvertToV8(isolate, kIpcKey)->ToString(isolate);
+  auto binding_key =
+      mate::ConvertToV8(isolate, kIpcKey)->ToString(context).ToLocalChecked();
   auto private_binding_key = v8::Private::ForApi(isolate, binding_key);
   auto global_object = context->Global();
   auto value =
       global_object->GetPrivate(context, private_binding_key).ToLocalChecked();
   DCHECK(!value.IsEmpty() && value->IsObject());
-  return value->ToObject(isolate);
+  return value->ToObject(context).ToLocalChecked();
 }
 
 void InvokeIpcCallback(v8::Local<v8::Context> context,
@@ -56,9 +57,10 @@ void InvokeIpcCallback(v8::Local<v8::Context> context,
     callback_scope.reset(new node::CallbackScope(isolate, ipcNative, {0, 0}));
   }
 
-  auto callback_key =
+  auto callback_key = mate::ConvertToV8(isolate, callback_name)
-      mate::ConvertToV8(isolate, callback_name)->ToString(isolate);
+                          ->ToString(context)
-  auto callback_value = ipcNative->Get(callback_key);
+                          .ToLocalChecked();
+  auto callback_value = ipcNative->Get(context, callback_key).ToLocalChecked();
   DCHECK(callback_value->IsFunction());  // set by init.ts
   auto callback = v8::Local<v8::Function>::Cast(callback_value);
   ignore_result(callback->Call(context, ipcNative, args.size(), args.data()));

build/args/all.gn

@@ -2,14 +2,21 @@ is_electron_build = true
 use_jumbo_build = true
 root_extra_deps = [ "//electron" ]
 
+# Registry of NMVs --> https://github.com/nodejs/node/blob/master/doc/abi_version_registry.json
+node_module_version = 73
+
 v8_promise_internal_field_count = 1
 v8_typed_array_max_size_in_heap = 0
 v8_embedder_string = "-electron.0"
 
+# TODO: this breaks mksnapshot
+v8_enable_snapshot_native_code_counters = false
+
 enable_cdm_host_verification = false
 proprietary_codecs = true
 ffmpeg_branding = "Chrome"
 
 enable_basic_printing = true
+angle_enable_vulkan_validation_layers = false
 
 is_cfi = false

build/npm.gni

@@ -6,7 +6,7 @@ template("npm_action") {
   action("npm_pre_flight_" + target_name) {
     inputs = [
       "package.json",
-      "package-lock.json",
+      "yarn.lock",
     ]
     script = "//electron/build/npm-run.py"