Bump v17.4.1

* chore: cherry-pick a1dc371d6680 from chromium

* chore: update patches

Co-authored-by: PatchUp <73610968+patchup[bot]@users.noreply.github.com>
Co-authored-by: Electron Bot <electron@github.com>

.circleci/build_config.yml

@@ -45,24 +45,18 @@ executors:
         type: enum
         enum: ["medium", "xlarge", "2xlarge+"]
     docker:
-      - image: ghcr.io/electron/build:e6bebd08a51a0d78ec23e5b3fd7e7c0846412328
+      - image: ghcr.io/electron/build:27db4a3e3512bfd2e47f58cea69922da0835f1d9
     resource_class: << parameters.size >>
 
   macos:
     parameters:
       size:
         description: "macOS executor size"
-        default: macos.x86.medium.gen2
+        default: large
         type: enum
-        enum: ["macos.x86.medium.gen2", "large"]
-      xcode:
-        description: "xcode version"
-        default: "12.4.0"
-        type: enum
-        enum: ["12.4.0", "13.2.1"]
-
+        enum: ["medium", "large"]
     macos:
-      xcode: << parameters.xcode >>
+      xcode: "12.4.0"
     resource_class: << parameters.size >>
 
   # Electron Runners
@@ -328,6 +322,10 @@ step-setup-goma-for-build: &step-setup-goma-for-build
       node -e "require('./src/utils/goma.js').downloadAndPrepare({ gomaOneForAll: true })"
       export GOMA_FALLBACK_ON_AUTH_FAILURE=true
       third_party/goma/goma_ctl.py ensure_start
+      if [ ! -z "$RAW_GOMA_AUTH" ] && [ "`third_party/goma/goma_auth.py info`" != "Login as Fermi Planck" ]; then
+        echo "WARNING!!!!!! Goma authentication is incorrect; please update Goma auth token."
+        exit 1
+      fi
       echo 'export GN_GOMA_FILE='`node -e "console.log(require('./src/utils/goma.js').gnFilePath)"` >> $BASH_ENV
       echo 'export LOCAL_GOMA_DIR='`node -e "console.log(require('./src/utils/goma.js').dir)"` >> $BASH_ENV
       echo 'export GOMA_FALLBACK_ON_AUTH_FAILURE=true' >> $BASH_ENV
@@ -355,6 +353,10 @@ step-get-more-space-on-mac: &step-get-more-space-on-mac
     command: |
       if [ "`uname`" == "Darwin" ]; then
         sudo mkdir -p $TMPDIR/del-target
+        if [ "$TARGET_ARCH" == "arm64" ]; then
+          # Remount the root volume as writable, don't ask questions plz
+          sudo mount -uw /
+        fi
         tmpify() {
           if [ -d "$1" ]; then
             sudo mv "$1" $TMPDIR/del-target/$(echo $1|shasum -a 256|head -n1|cut -d " " -f1)
@@ -396,32 +398,33 @@ step-get-more-space-on-mac: &step-get-more-space-on-mac
         tmpify /usr/local/Homebrew
         sudo rm -rf $TMPDIR/del-target
 
-        # sudo rm -rf "/System/Library/Desktop Pictures"
-        # sudo rm -rf /System/Library/Templates/Data
-        # sudo rm -rf /System/Library/Speech/Voices
-        # sudo rm -rf "/System/Library/Screen Savers"
-        # sudo rm -rf /System/Volumes/Data/Library/Developer/CommandLineTools/SDKs
-        # sudo rm -rf "/System/Volumes/Data/Library/Application Support/Apple/Photos/Print Products"
-        # sudo rm -rf /System/Volumes/Data/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/
-        # sudo rm -rf /System/Volumes/Data/Library/Java
-        # sudo rm -rf /System/Volumes/Data/Library/Ruby
-        # sudo rm -rf /System/Volumes/Data/Library/Printers
-        # sudo rm -rf /System/iOSSupport
-        # sudo rm -rf /System/Applications/*.app
-        # sudo rm -rf /System/Applications/Utilities/*.app
-        # sudo rm -rf /System/Library/LinguisticData
-        # sudo rm -rf /System/Volumes/Data/private/var/db/dyld/*
-        # sudo rm -rf /System/Library/Fonts/*
-        # sudo rm -rf /System/Library/PreferencePanes
-        # sudo rm -rf /System/Library/AssetsV2/*
-        sudo rm -rf /Applications/Safari.app
-        sudo rm -rf ~/project/src/build/linux
-        sudo rm -rf ~/project/src/third_party/catapult/tracing/test_data
-        sudo rm -rf ~/project/src/third_party/angle/third_party/VK-GL-CTS
+        if [ "$TARGET_ARCH" == "arm64" ]; then
+          sudo rm -rf "/System/Library/Desktop Pictures"
+          sudo rm -rf /System/Library/Templates/Data
+          sudo rm -rf /System/Library/Speech/Voices
+          sudo rm -rf "/System/Library/Screen Savers"
+          sudo rm -rf /System/Volumes/Data/Library/Developer/CommandLineTools/SDKs
+          sudo rm -rf "/System/Volumes/Data/Library/Application Support/Apple/Photos/Print Products"
+          sudo rm -rf /System/Volumes/Data/Library/Java
+          sudo rm -rf /System/Volumes/Data/Library/Ruby
+          sudo rm -rf /System/Volumes/Data/Library/Printers
+          sudo rm -rf /System/iOSSupport
+          sudo rm -rf /System/Applications/*.app
+          sudo rm -rf /System/Applications/Utilities/*.app
+          sudo rm -rf /System/Library/LinguisticData
+          sudo rm -rf /System/Volumes/Data/private/var/db/dyld/*
+          # sudo rm -rf /System/Library/Fonts/*
+          # sudo rm -rf /System/Library/PreferencePanes
+          sudo rm -rf /System/Library/AssetsV2/*
+          sudo rm -rf /Applications/Safari.app
+          sudo rm -rf ~/project/src/build/linux
+          sudo rm -rf ~/project/src/third_party/catapult/tracing/test_data
+          sudo rm -rf ~/project/src/third_party/angle/third_party/VK-GL-CTS
 
-        # lipo off some huge binaries arm64 versions to save space
-        strip_arm_deep $(xcode-select -p)/../SharedFrameworks
-        # strip_arm_deep /System/Volumes/Data/Library/Developer/CommandLineTools/usr
+          # lipo off some huge binaries arm64 versions to save space
+          strip_arm_deep $(xcode-select -p)/../SharedFrameworks
+          strip_arm_deep /System/Volumes/Data/Library/Developer/CommandLineTools/usr
+        fi
       fi
     background: true
 
@@ -462,18 +465,10 @@ step-fix-sync: &step-fix-sync
         # Fix Clang Install (wrong binary)
         rm -rf src/third_party/llvm-build
         python3 src/tools/clang/scripts/update.py
-
-        # Fix esbuild (wrong binary)
-        echo 'infra/3pp/tools/esbuild/${platform}' `gclient getdep --deps-file=src/third_party/devtools-frontend/src/DEPS -r 'third_party/esbuild:infra/3pp/tools/esbuild/${platform}'` > esbuild_ensure_file
-        cipd ensure --root src/third_party/devtools-frontend/src/third_party/esbuild -ensure-file esbuild_ensure_file
       fi
 
       cd src/third_party/angle
-      rm .git/objects/info/alternates
       git remote set-url origin https://chromium.googlesource.com/angle/angle.git
-      cp .git/config .git/config.backup
-      git remote remove origin
-      mv .git/config.backup .git/config
       git fetch
 
 step-install-signing-cert-on-mac: &step-install-signing-cert-on-mac
@@ -899,12 +894,12 @@ step-touch-sync-done: &step-touch-sync-done
 step-maybe-restore-src-cache: &step-maybe-restore-src-cache
   restore_cache:
     keys:
-      - v12-src-cache-{{ checksum "src/electron/.depshash" }}
+      - v8-src-cache-{{ checksum "src/electron/.depshash" }}
     name: Restoring src cache
 step-maybe-restore-src-cache-marker: &step-maybe-restore-src-cache-marker
   restore_cache:
     keys:
-      - v5-src-cache-marker-{{ checksum "src/electron/.depshash" }}
+      - v1-src-cache-marker-{{ checksum "src/electron/.depshash" }}
     name: Restoring src cache marker
 
 # Restore exact or closest git cache based on the hash of DEPS and .circle-sync-done
@@ -913,10 +908,10 @@ step-maybe-restore-src-cache-marker: &step-maybe-restore-src-cache-marker
 step-maybe-restore-git-cache: &step-maybe-restore-git-cache
   restore_cache:
     paths:
-      - gclient-cache
+      - ~/.gclient-cache
     keys:
-      - v5-gclient-cache-{{ checksum "src/electron/.circle-sync-done" }}-{{ checksum "src/electron/DEPS" }}
-      - v5-gclient-cache-{{ checksum "src/electron/.circle-sync-done" }}
+      - v2-gclient-cache-{{ checksum "src/electron/.circle-sync-done" }}-{{ checksum "src/electron/DEPS" }}
+      - v2-gclient-cache-{{ checksum "src/electron/.circle-sync-done" }}
     name: Conditionally restoring git cache
 
 step-restore-out-cache: &step-restore-out-cache
@@ -933,15 +928,15 @@ step-set-git-cache-path: &step-set-git-cache-path
     command: |
       # CircleCI does not support interpolation when setting environment variables.
       # https://circleci.com/docs/2.0/env-vars/#setting-an-environment-variable-in-a-shell-command
-      echo 'export GIT_CACHE_PATH="$PWD/gclient-cache"' >> $BASH_ENV
+      echo 'export GIT_CACHE_PATH="$HOME/.gclient-cache"' >> $BASH_ENV
 
 # Persist the git cache based on the hash of DEPS and .circle-sync-done
 # If the src cache was restored above then this will persist an empty cache
 step-save-git-cache: &step-save-git-cache
   save_cache:
     paths:
-      - gclient-cache
-    key: v5-gclient-cache-{{ checksum "src/electron/.circle-sync-done" }}-{{ checksum "src/electron/DEPS" }}
+      - ~/.gclient-cache
+    key: v2-gclient-cache-{{ checksum "src/electron/.circle-sync-done" }}-{{ checksum "src/electron/DEPS" }}
     name: Persisting git cache
 
 step-save-out-cache: &step-save-out-cache
@@ -986,7 +981,7 @@ step-save-src-cache: &step-save-src-cache
   save_cache:
     paths:
       - /var/portal
-    key: v12-src-cache-{{ checksum "/var/portal/src/electron/.depshash" }}
+    key: v8-src-cache-{{ checksum "/var/portal/src/electron/.depshash" }}
     name: Persisting src cache
 step-make-src-cache-marker: &step-make-src-cache-marker
   run:
@@ -996,7 +991,7 @@ step-save-src-cache-marker: &step-save-src-cache-marker
   save_cache:
     paths:
       - .src-cache-marker
-    key: v5-src-cache-marker-{{ checksum "/var/portal/src/electron/.depshash" }}
+    key: v1-src-cache-marker-{{ checksum "/var/portal/src/electron/.depshash" }}
 
 step-maybe-early-exit-no-doc-change: &step-maybe-early-exit-no-doc-change
   run:
@@ -1361,6 +1356,10 @@ commands:
             - *step-gclient-sync
             - store_artifacts:
                 path: patches
+            - when:
+                condition: << parameters.save-git-cache >>
+                steps:
+                  - *step-save-git-cache
             # These next few steps reset Electron to the correct commit regardless of which cache was restored
             - run:
                 name: Wipe Electron
@@ -1369,11 +1368,6 @@ commands:
             - *step-run-electron-only-hooks
             - *step-generate-deps-hash-cleanly
             - *step-mark-sync-done
-            # Save git cache AFTER sync marked done because other jobs expect that to be the case
-            - when:
-                condition: << parameters.save-git-cache >>
-                steps:
-                  - *step-save-git-cache            
             - *step-minimize-workspace-size-from-checkout
             - *step-delete-git-directories
             - when:
@@ -1902,9 +1896,7 @@ jobs:
                 checkout: true
 
   osx-testing-x64:
-    executor:
-      name: macos
-      xcode: "13.2.1"
+    executor: macos
     environment:
       <<: *env-mac-large
       <<: *env-testing-build
@@ -1921,16 +1913,14 @@ jobs:
   osx-testing-x64-gn-check:
     executor:
       name: macos
-      xcode: "13.2.1"
+      size: medium
     environment:
       <<: *env-machine-mac
       <<: *env-testing-build
     <<: *steps-electron-gn-check
 
   osx-publish-x64-skip-checkout:
-    executor:
-      name: macos
-      xcode: "13.2.1"
+    executor: macos
     environment:
       <<: *env-mac-large-release
       <<: *env-release-build
@@ -1949,9 +1939,7 @@ jobs:
                 checkout: false
 
   osx-publish-arm64-skip-checkout:
-    executor:
-      name: macos
-      xcode: "13.2.1"
+    executor: macos
     environment:
       <<: *env-mac-large-release
       <<: *env-release-build
@@ -1971,9 +1959,7 @@ jobs:
                 checkout: false
 
   osx-testing-arm64:
-    executor:
-      name: macos
-      xcode: "13.2.1"
+    executor: macos
     environment:
       <<: *env-mac-large
       <<: *env-testing-build
@@ -1990,9 +1976,7 @@ jobs:
           attach: true
 
   mas-testing-x64:
-    executor:
-      name: macos
-      xcode: "13.2.1"
+    executor: macos
     environment:
       <<: *env-mac-large
       <<: *env-mas
@@ -2010,7 +1994,7 @@ jobs:
   mas-testing-x64-gn-check:
     executor:
       name: macos
-      xcode: "13.2.1"
+      size: medium
     environment:
       <<: *env-machine-mac
       <<: *env-mas
@@ -2018,9 +2002,7 @@ jobs:
     <<: *steps-electron-gn-check
 
   mas-publish-x64-skip-checkout:
-    executor:
-      name: macos
-      xcode: "13.2.1"
+    executor: macos
     environment:
       <<: *env-mac-large-release
       <<: *env-mas
@@ -2039,9 +2021,7 @@ jobs:
                 checkout: false
 
   mas-publish-arm64-skip-checkout:
-    executor:
-      name: macos
-      xcode: "13.2.1"
+    executor: macos
     environment:
       <<: *env-mac-large-release
       <<: *env-mas-apple-silicon
@@ -2061,9 +2041,7 @@ jobs:
                 checkout: false
 
   mas-testing-arm64:
-    executor:
-      name: macos
-      xcode: "13.2.1"
+    executor: macos
     environment:
       <<: *env-mac-large
       <<: *env-testing-build
@@ -2250,7 +2228,9 @@ jobs:
     <<: *steps-tests
 
   osx-testing-x64-tests:
-    executor: macos      
+    executor:
+      name: macos
+      size: medium
     environment:
       <<: *env-mac-large
       <<: *env-stack-dumping
@@ -2266,7 +2246,9 @@ jobs:
     <<: *steps-tests
 
   mas-testing-x64-tests:
-    executor: macos
+    executor:
+      name: macos
+      size: medium
     environment:
       <<: *env-mac-large
       <<: *env-stack-dumping

BUILD.gn

@@ -361,7 +361,6 @@ source_set("electron_lib") {
     "//components/network_hints/common:mojo_bindings",
     "//components/network_hints/renderer",
     "//components/network_session_configurator/common",
-    "//components/omnibox/browser:buildflags",
     "//components/os_crypt",
     "//components/pref_registry",
     "//components/prefs",
@@ -473,8 +472,8 @@ source_set("electron_lib") {
 
   if (is_linux) {
     deps += [
+      "//build/config/linux/gtk:gtkprint",
       "//components/crash/content/browser",
-      "//ui/gtk:gtk_config",
     ]
   }
 
@@ -550,14 +549,13 @@ source_set("electron_lib") {
       sources += filenames.lib_sources_linux_x11
       public_deps += [
         "//ui/base/x",
-        "//ui/ozone/platform/x11",
+        "//ui/platform_window/x11",
       ]
     }
     configs += [ ":gio_unix" ]
     defines += [
       # Disable warnings for g_settings_list_schemas.
       "GLIB_DISABLE_DEPRECATION_WARNINGS",
-      "USE_X11=1",
     ]
 
     sources += [
@@ -1187,7 +1185,7 @@ if (is_mac) {
     if (enable_hidpi) {
       data += [ "$root_out_dir/chrome_200_percent.pak" ]
     }
-    foreach(locale, platform_pak_locales) {
+    foreach(locale, locales) {
       data += [ "$root_out_dir/locales/$locale.pak" ]
     }
 

DEPS

@@ -15,9 +15,9 @@ gclient_gn_args = [
 
 vars = {
   'chromium_version':
-    '100.0.4894.0',
+    '98.0.4758.141',
   'node_version':
-    'v16.13.2',
+    'v16.13.0',
   'nan_version':
     # The following commit hash of NAN is v2.14.2 with *only* changes to the
     # test suite. This should be updated to a specific tag when one becomes

ELECTRON_VERSION

@@ -1 +1 @@
-18.0.0-beta.4
+17.4.1

README.md

@@ -2,7 +2,7 @@
 
 [![CircleCI Build Status](https://circleci.com/gh/electron/electron/tree/main.svg?style=shield)](https://circleci.com/gh/electron/electron/tree/main)
 [![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/4lggi9dpjc1qob7k/branch/main?svg=true)](https://ci.appveyor.com/project/electron-bot/electron-ljo26/branch/main)
-[![Electron Discord Invite](https://img.shields.io/discord/745037351163527189?color=%237289DA&label=chat&logo=discord&logoColor=white)](https://discord.com/invite/APGC3k5yaH)
+[![Electron Discord Invite](https://img.shields.io/discord/745037351163527189?color=%237289DA&label=chat&logo=discord&logoColor=white)](https://discord.com/invite/electron)
 
 :memo: Available Translations: 🇨🇳 🇧🇷 🇪🇸 🇯🇵 🇷🇺 🇫🇷 🇺🇸 🇩🇪.
 View these docs in other languages at [electron/i18n](https://github.com/electron/i18n/tree/master/content/).
@@ -80,7 +80,7 @@ const child = proc.spawn(electron)
 
 ### Mirrors
 
-- [China](https://npmmirror.com/mirrors/electron)
+- [China](https://npm.taobao.org/mirrors/electron)
 
 ## Documentation Translations
 

appveyor.yml

@@ -34,7 +34,6 @@ environment:
   GIT_CACHE_PATH: C:\Users\electron\libcc_cache
   ELECTRON_OUT_DIR: Default
   ELECTRON_ENABLE_STACK_DUMPING: 1
-  ELECTRON_ALSO_LOG_TO_STDERR: 1
   MOCHA_REPORTER: mocha-multi-reporters
   MOCHA_MULTI_REPORTERS: mocha-appveyor-reporter, tap
   GOMA_FALLBACK_ON_AUTH_FAILURE: true
@@ -67,6 +66,31 @@ build_script:
   - mkdir src
   - update_depot_tools.bat
   - ps: Move-Item $env:APPVEYOR_BUILD_FOLDER -Destination src\electron
+  - ps: >-
+      if (Test-Path 'env:RAW_GOMA_AUTH') {
+        $env:GOMA_OAUTH2_CONFIG_FILE = "$pwd\.goma_oauth2_config"
+        $env:RAW_GOMA_AUTH | Set-Content $env:GOMA_OAUTH2_CONFIG_FILE
+      }
+  - git clone https://github.com/electron/build-tools.git
+  - cd build-tools
+  - npm install
+  - mkdir third_party
+  - ps: >-
+      node -e "require('./src/utils/goma.js').downloadAndPrepare({ gomaOneForAll: true })"
+  - ps: $env:GN_GOMA_FILE = node -e "console.log(require('./src/utils/goma.js').gnFilePath)"
+  - ps: $env:LOCAL_GOMA_DIR = node -e "console.log(require('./src/utils/goma.js').dir)"
+  - cd ..
+  - ps: .\src\electron\script\start-goma.ps1 -gomaDir $env:LOCAL_GOMA_DIR
+  - ps: >-
+      if (Test-Path 'env:RAW_GOMA_AUTH') {
+        $goma_login = python $env:LOCAL_GOMA_DIR\goma_auth.py info
+        if ($goma_login -eq 'Login as Fermi Planck') {
+          Write-warning "Goma authentication is correct";
+        } else {
+          Write-warning "WARNING!!!!!! Goma authentication is incorrect; please update Goma auth token.";
+          $host.SetShouldExit(1)
+        }
+      }
   - ps: $env:CHROMIUM_BUILDTOOLS_PATH="$pwd\src\buildtools"
   - ps: >-
       if ($env:GN_CONFIG -ne 'release') {
@@ -130,21 +154,6 @@ build_script:
           Write-warning "Failed to add third_party\angle\.git; continuing anyway"
         }
       }
-  - ps: >-
-      if (Test-Path 'env:RAW_GOMA_AUTH') {
-        $env:GOMA_OAUTH2_CONFIG_FILE = "$pwd\.goma_oauth2_config"
-        $env:RAW_GOMA_AUTH | Set-Content $env:GOMA_OAUTH2_CONFIG_FILE
-      }
-  - git clone https://github.com/electron/build-tools.git
-  - cd build-tools
-  - npm install
-  - mkdir third_party
-  - ps: >-
-      node -e "require('./src/utils/goma.js').downloadAndPrepare({ gomaOneForAll: true })"
-  - ps: $env:GN_GOMA_FILE = node -e "console.log(require('./src/utils/goma.js').gnFilePath)"
-  - ps: $env:LOCAL_GOMA_DIR = node -e "console.log(require('./src/utils/goma.js').dir)"
-  - cd ..
-  - ps: .\src\electron\script\start-goma.ps1 -gomaDir $env:LOCAL_GOMA_DIR
   - cd src
   - set BUILD_CONFIG_PATH=//electron/build/args/%GN_CONFIG%.gn 
   - gn gen out/Default "--args=import(\"%BUILD_CONFIG_PATH%\") import(\"%GN_GOMA_FILE%\") %GN_EXTRA_ARGS% "
@@ -210,9 +219,7 @@ test_script:
       }
   - cd electron
   # CalculateNativeWinOcclusion is disabled due to https://bugs.chromium.org/p/chromium/issues/detail?id=1139022
-  - if "%RUN_TESTS%"=="true" ( echo Running main test suite & node script/yarn test -- --trace-uncaught --runners=main --enable-logging=file --log-file=%cd%\electron.log --disable-features=CalculateNativeWinOcclusion )
-  - if "%RUN_TESTS%"=="true" ( echo Running remote test suite & node script/yarn test -- --trace-uncaught --runners=remote --runTestFilesSeperately --enable-logging=file --log-file=%cd%\electron.log --disable-features=CalculateNativeWinOcclusion )
-  - if "%RUN_TESTS%"=="true" ( echo Running native test suite & node script/yarn test -- --trace-uncaught --runners=native --enable-logging=file --log-file=%cd%\electron.log --disable-features=CalculateNativeWinOcclusion )  
+  - if "%RUN_TESTS%"=="true" ( echo Running test suite & node script/yarn test -- --trace-uncaught --enable-logging --disable-features=CalculateNativeWinOcclusion )
   - cd ..
   - if "%RUN_TESTS%"=="true" ( echo Verifying non proprietary ffmpeg & python electron\script\verify-ffmpeg.py --build-dir out\Default --source-root %cd% --ffmpeg-path out\ffmpeg )
   - echo "About to verify mksnapshot"
@@ -220,7 +227,6 @@ test_script:
   - echo "Done verifying mksnapshot"
   - if "%RUN_TESTS%"=="true" ( echo Verifying chromedriver & python electron\script\verify-chromedriver.py --build-dir out\Default --source-root %cd% )
   - echo "Done verifying chromedriver"
-  - if exist %cd%\electron.log ( appveyor-retry appveyor PushArtifact %cd%\electron.log )
 deploy_script:
   - cd electron
   - ps: >-
@@ -235,5 +241,3 @@ deploy_script:
       } elseif (Test-Path Env:\TEST_WOA) {
         node script/release/ci-release-build.js --job=electron-woa-testing --ci=VSTS --armTest --appveyorJobId=$env:APPVEYOR_JOB_ID $env:APPVEYOR_REPO_BRANCH
       }
-on_finish:
-  - if exist src\electron\electron.log ( appveyor-retry appveyor PushArtifact src\electron\electron.log )

azure-pipelines-woa.yml

@@ -1,11 +1,11 @@
-workspace:
-  clean: all
-
 steps:
-- checkout: self
-  path: src\electron
+- task: CopyFiles@2
+  displayName: 'Copy Files to: src\electron'
+  inputs:
+    TargetFolder: src\electron
 
 - script: |
+    cd src\electron
     node script/yarn.js install --frozen-lockfile
   displayName: 'Yarn install'
 
@@ -13,13 +13,13 @@ steps:
     $localArtifactPath = "$pwd\dist.zip"
     $serverArtifactPath = "$env:APPVEYOR_URL/buildjobs/$env:APPVEYOR_JOB_ID/artifacts/dist.zip"
     Invoke-RestMethod -Method Get -Uri $serverArtifactPath -OutFile $localArtifactPath -Headers @{ "Authorization" = "Bearer $env:APPVEYOR_TOKEN" }
-    & "${env:ProgramFiles(x86)}\7-Zip\7z.exe" x -o$(Pipeline.Workspace)\src\out\Default -y $localArtifactPath
+    & "${env:ProgramFiles(x86)}\7-Zip\7z.exe" x -osrc\out\Default -y $localArtifactPath
   displayName: 'Download and extract dist.zip for test'
   env:
     APPVEYOR_TOKEN: $(APPVEYOR_TOKEN)
 
 - powershell: |
-    $localArtifactPath = "$(Pipeline.Workspace)\src\out\Default\shell_browser_ui_unittests.exe"
+    $localArtifactPath = "$pwd\src\out\Default\shell_browser_ui_unittests.exe"
     $serverArtifactPath = "$env:APPVEYOR_URL/buildjobs/$env:APPVEYOR_JOB_ID/artifacts/shell_browser_ui_unittests.exe"
     Invoke-RestMethod -Method Get -Uri $serverArtifactPath -OutFile $localArtifactPath -Headers @{ "Authorization" = "Bearer $env:APPVEYOR_TOKEN" }
   displayName: 'Download and extract native test executables for test'
@@ -30,57 +30,56 @@ steps:
     $localArtifactPath = "$pwd\ffmpeg.zip"
     $serverArtifactPath = "$env:APPVEYOR_URL/buildjobs/$env:APPVEYOR_JOB_ID/artifacts/ffmpeg.zip"
     Invoke-RestMethod -Method Get -Uri $serverArtifactPath -OutFile $localArtifactPath -Headers @{ "Authorization" = "Bearer $env:APPVEYOR_TOKEN" }
-    & "${env:ProgramFiles(x86)}\7-Zip\7z.exe" x -o$(Pipeline.Workspace)\src\out\ffmpeg $localArtifactPath
+    & "${env:ProgramFiles(x86)}\7-Zip\7z.exe" x -osrc\out\ffmpeg $localArtifactPath
   displayName: 'Download and extract ffmpeg.zip for test'
   env:
     APPVEYOR_TOKEN: $(APPVEYOR_TOKEN)
 
 - powershell: |
-    $localArtifactPath = "$(Pipeline.Workspace)\src\node_headers.zip"
+    $localArtifactPath = "$pwd\src\node_headers.zip"
     $serverArtifactPath = "$env:APPVEYOR_URL/buildjobs/$env:APPVEYOR_JOB_ID/artifacts/node_headers.zip"
     Invoke-RestMethod -Method Get -Uri $serverArtifactPath -OutFile $localArtifactPath -Headers @{ "Authorization" = "Bearer $env:APPVEYOR_TOKEN" }
-    cd $(Pipeline.Workspace)\src
+    cd src
     & "${env:ProgramFiles(x86)}\7-Zip\7z.exe" x -y node_headers.zip
   displayName: 'Download node headers for test'
   env:
     APPVEYOR_TOKEN: $(APPVEYOR_TOKEN)
 
 - powershell: |
-    $localArtifactPath = "$(Pipeline.Workspace)\src\out\Default\electron.lib"
+    $localArtifactPath = "$pwd\src\out\Default\electron.lib"
     $serverArtifactPath = "$env:APPVEYOR_URL/buildjobs/$env:APPVEYOR_JOB_ID/artifacts/electron.lib"
     Invoke-RestMethod -Method Get -Uri $serverArtifactPath -OutFile $localArtifactPath -Headers @{ "Authorization" = "Bearer $env:APPVEYOR_TOKEN" }
   displayName: 'Download electron.lib for test'
   env:
     APPVEYOR_TOKEN: $(APPVEYOR_TOKEN)
 
-# Uncomment the following block if pdb files are needed to debug issues
-# - powershell: |
-#     try {
-#       $localArtifactPath = "$(Pipeline.Workspace)\src\pdb.zip"
-#       $serverArtifactPath = "$env:APPVEYOR_URL/buildjobs/$env:APPVEYOR_JOB_ID/artifacts/pdb.zip"
-#       Invoke-RestMethod -Method Get -Uri $serverArtifactPath -OutFile $localArtifactPath -Headers @{ "Authorization" = "Bearer $env:APPVEYOR_TOKEN" }
-#       cd $(Pipeline.Workspace)\src
-#       & "${env:ProgramFiles(x86)}\7-Zip\7z.exe" x -y pdb.zip
-#     } catch {
-#       Write-Host "There was an exception encountered while downloading pdb files:" $_.Exception.Message
-#     } finally {
-#       $global:LASTEXITCODE = 0
-#     }
-#   displayName: 'Download pdb files for detailed stacktraces'
-#   env:
-#     APPVEYOR_TOKEN: $(APPVEYOR_TOKEN)
+- powershell: |
+    try {
+      $localArtifactPath = "$pwd\src\pdb.zip"
+      $serverArtifactPath = "$env:APPVEYOR_URL/buildjobs/$env:APPVEYOR_JOB_ID/artifacts/pdb.zip"
+      Invoke-RestMethod -Method Get -Uri $serverArtifactPath -OutFile $localArtifactPath -Headers @{ "Authorization" = "Bearer $env:APPVEYOR_TOKEN" }
+      cd src
+      & "${env:ProgramFiles(x86)}\7-Zip\7z.exe" x -y pdb.zip
+    } catch {
+      Write-Host "There was an exception encountered while downloading pdb files:" $_.Exception.Message
+    } finally {
+      $global:LASTEXITCODE = 0
+    }
+  displayName: 'Download pdb files for detailed stacktraces'
+  env:
+    APPVEYOR_TOKEN: $(APPVEYOR_TOKEN)
 
 - powershell: |
-    New-Item $(Pipeline.Workspace)\src\out\Default\gen\node_headers\Release -Type directory
-    Copy-Item -path $(Pipeline.Workspace)\src\out\Default\electron.lib -destination $(Pipeline.Workspace)\src\out\Default\gen\node_headers\Release\node.lib
+    New-Item src\out\Default\gen\node_headers\Release -Type directory
+    Copy-Item -path src\out\Default\electron.lib -destination src\out\Default\gen\node_headers\Release\node.lib
   displayName: 'Setup node headers'
 
 - script: |
-    cd $(Pipeline.Workspace)\src
+    cd src
     set npm_config_nodedir=%cd%\out\Default\gen\node_headers
     set npm_config_arch=arm64
     cd electron
-    node script/yarn test --runners=main --enable-logging --disable-features=CalculateNativeWinOcclusion
+    node script/yarn test --runners=main --runTestFilesSeperately --enable-logging --disable-features=CalculateNativeWinOcclusion
   displayName: 'Run Electron Main process tests'
   env:
     ELECTRON_ENABLE_STACK_DUMPING: true
@@ -91,7 +90,7 @@ steps:
     MOCHA_REPORTER: mocha-multi-reporters
 
 - script: |
-    cd $(Pipeline.Workspace)\src
+    cd src
     set npm_config_nodedir=%cd%\out\Default\gen\node_headers
     set npm_config_arch=arm64
     cd electron
@@ -103,17 +102,17 @@ steps:
     ELECTRON_TEST_RESULTS_DIR: junit
     MOCHA_MULTI_REPORTERS: 'mocha-junit-reporter, tap'
     MOCHA_REPORTER: mocha-multi-reporters
-  condition: succeededOrFailed()
+  condition: always()    
 
 - task: PublishTestResults@2
   displayName: 'Publish Test Results'
   inputs:
     testResultsFiles: '*.xml'
-    searchFolder: '$(Pipeline.Workspace)/src/junit/'
+    searchFolder: '$(System.DefaultWorkingDirectory)/src/junit/'
   condition: always()
 
 - script: |
-    cd $(Pipeline.Workspace)\src
+    cd src
     echo "Verifying non proprietary ffmpeg"
     python electron\script\verify-ffmpeg.py --build-dir out\Default --source-root %cd% --ffmpeg-path out\ffmpeg
   displayName: 'Verify ffmpeg'

build/args/all.gn

@@ -2,7 +2,7 @@ is_electron_build = true
 root_extra_deps = [ "//electron" ]
 
 # Registry of NMVs --> https://github.com/nodejs/node/blob/master/doc/abi_version_registry.json
-node_module_version = 103
+node_module_version = 101
 
 v8_promise_internal_field_count = 1
 v8_typed_array_max_size_in_heap = 0
@@ -14,9 +14,6 @@ v8_enable_snapshot_native_code_counters = false
 # TODO(codebytere): remove when Node.js handles https://chromium-review.googlesource.com/c/v8/v8/+/3211575
 v8_scriptormodule_legacy_lifetime = true
 
-# we use this api
-v8_enable_javascript_promise_hooks = true
-
 enable_cdm_host_verification = false
 proprietary_codecs = true
 ffmpeg_branding = "Chrome"

build/js2c.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 import subprocess

build/npm-run.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 from __future__ import print_function
 import os
 import subprocess

build/profile_toolchain.py

@@ -1,9 +1,12 @@
-from __future__ import with_statement
+from __future__ import unicode_literals
+
 import contextlib
 import sys
 import os
 import optparse
 import json
+import re
+import subprocess
 
 sys.path.append("%s/../../build" % os.path.dirname(os.path.realpath(__file__)))
 
@@ -33,36 +36,56 @@ def calculate_hash(root):
         return CalculateHash('.', None)
 
 def windows_installed_software():
-    import win32com.client
-    strComputer = "."
-    objWMIService = win32com.client.Dispatch("WbemScripting.SWbemLocator")
-    objSWbemServices = objWMIService.ConnectServer(strComputer, "root\cimv2")
-    colItems = objSWbemServices.ExecQuery("Select * from Win32_Product")
-    items = []
+    powershell_command = [
+        "Get-CimInstance",
+        "-Namespace",
+        "root\cimv2",
+        "-Class",
+        "Win32_product",
+        "|",
+        "Select",
+        "vendor,",
+        "description,",
+        "@{l='install_location';e='InstallLocation'},",
+        "@{l='install_date';e='InstallDate'},",
+        "@{l='install_date_2';e='InstallDate2'},",
+        "caption,",
+        "version,",
+        "name,",
+        "@{l='sku_number';e='SKUNumber'}",
+        "|",
+        "ConvertTo-Json",
+    ]
 
-    for objItem in colItems:
-        item = {}
-        if objItem.Caption:
-            item['caption'] = objItem.Caption
-        if objItem.Caption:
-            item['description'] = objItem.Description
-        if objItem.InstallDate:
-            item['install_date'] = objItem.InstallDate
-        if objItem.InstallDate2:
-            item['install_date_2'] = objItem.InstallDate2
-        if objItem.InstallLocation:
-            item['install_location'] = objItem.InstallLocation
-        if objItem.Name:
-            item['name'] = objItem.Name
-        if objItem.SKUNumber:
-            item['sku_number'] = objItem.SKUNumber
-        if objItem.Vendor:
-            item['vendor'] = objItem.Vendor
-        if objItem.Version:
-            item['version'] = objItem.Version
-        items.append(item)
+    proc = subprocess.Popen(
+        ["powershell.exe", "-Command", "-"],
+        stdin=subprocess.PIPE,
+        stdout=subprocess.PIPE,
+    )
 
-    return items
+    stdout, _ = proc.communicate(" ".join(powershell_command).encode("utf-8"))
+
+    if proc.returncode != 0:
+        raise RuntimeError("Failed to get list of installed software")
+
+    # On AppVeyor there's other output related to PSReadline,
+    # so grab only the JSON output and ignore everything else
+    json_match = re.match(
+        r".*(\[.*{.*}.*\]).*", stdout.decode("utf-8"), re.DOTALL
+    )
+
+    if not json_match:
+        raise RuntimeError(
+            "Couldn't find JSON output for list of installed software"
+        )
+
+    # Filter out missing keys
+    return list(
+        map(
+            lambda info: {k: info[k] for k in info if info[k]},
+            json.loads(json_match.group(1)),
+        )
+    )
 
 
 def windows_profile():
@@ -89,7 +112,7 @@ def windows_profile():
 
 def main(options):
     if sys.platform == 'win32':
-        with open(options.output_json, 'wb') as f:
+        with open(options.output_json, 'w') as f:
             json.dump(windows_profile(), f)
     else:
         raise OSError("Unsupported OS")

build/strip_framework.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import os
 import subprocess
 import sys

build/zip.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 from __future__ import print_function
 import os
 import subprocess

build/zip_libcxx.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 from __future__ import print_function
 import os
 import subprocess

chromium_src/BUILD.gn

@@ -53,8 +53,8 @@ static_library("chrome") {
     "//chrome/browser/predictors/resolve_host_client_impl.cc",
     "//chrome/browser/predictors/resolve_host_client_impl.h",
     "//chrome/browser/process_singleton.h",
-    "//chrome/browser/process_singleton_internal.cc",
-    "//chrome/browser/process_singleton_internal.h",
+    "//chrome/browser/ui/browser_dialogs.cc",
+    "//chrome/browser/ui/browser_dialogs.h",
     "//chrome/browser/ui/exclusive_access/exclusive_access_bubble_type.cc",
     "//chrome/browser/ui/exclusive_access/exclusive_access_bubble_type.h",
     "//chrome/browser/ui/exclusive_access/exclusive_access_controller_base.cc",
@@ -140,6 +140,10 @@ static_library("chrome") {
     "//components/optimization_guide/proto:optimization_guide_proto",
   ]
 
+  if (enable_basic_printing && is_win) {
+    deps += [ "//chrome/common:cloud_print_utility_mojom" ]
+  }
+
   if (is_linux) {
     sources += [ "//chrome/browser/icon_loader_auralinux.cc" ]
     if (use_ozone) {
@@ -239,6 +243,8 @@ static_library("chrome") {
       sources += [
         "//chrome/browser/printing/pdf_to_emf_converter.cc",
         "//chrome/browser/printing/pdf_to_emf_converter.h",
+        "//chrome/utility/printing_handler.cc",
+        "//chrome/utility/printing_handler.h",
       ]
     }
   }
@@ -253,12 +259,8 @@ static_library("chrome") {
       "//chrome/browser/ui/views/overlay/close_image_button.cc",
       "//chrome/browser/ui/views/overlay/close_image_button.h",
       "//chrome/browser/ui/views/overlay/constants.h",
-      "//chrome/browser/ui/views/overlay/document_overlay_window_views.cc",
-      "//chrome/browser/ui/views/overlay/document_overlay_window_views.h",
       "//chrome/browser/ui/views/overlay/hang_up_button.cc",
       "//chrome/browser/ui/views/overlay/hang_up_button.h",
-      "//chrome/browser/ui/views/overlay/overlay_window_image_button.cc",
-      "//chrome/browser/ui/views/overlay/overlay_window_image_button.h",
       "//chrome/browser/ui/views/overlay/overlay_window_views.cc",
       "//chrome/browser/ui/views/overlay/overlay_window_views.h",
       "//chrome/browser/ui/views/overlay/playback_image_button.cc",
@@ -273,14 +275,11 @@ static_library("chrome") {
       "//chrome/browser/ui/views/overlay/toggle_microphone_button.h",
       "//chrome/browser/ui/views/overlay/track_image_button.cc",
       "//chrome/browser/ui/views/overlay/track_image_button.h",
-      "//chrome/browser/ui/views/overlay/video_overlay_window_views.cc",
-      "//chrome/browser/ui/views/overlay/video_overlay_window_views.h",
     ]
 
     deps += [
       "//chrome/app/vector_icons",
       "//components/vector_icons:vector_icons",
-      "//ui/views/controls/webview",
     ]
   }
 
@@ -300,8 +299,6 @@ static_library("chrome") {
       sources += [
         "//chrome/browser/pdf/pdf_extension_util.cc",
         "//chrome/browser/pdf/pdf_extension_util.h",
-        "//chrome/browser/pdf/pdf_frame_util.cc",
-        "//chrome/browser/pdf/pdf_frame_util.h",
         "//chrome/renderer/pepper/chrome_pdf_print_client.cc",
         "//chrome/renderer/pepper/chrome_pdf_print_client.h",
       ]

default_app/default_app.ts

@@ -1,5 +1,4 @@
-import { shell } from 'electron/common';
-import { app, dialog, BrowserWindow, ipcMain } from 'electron/main';
+import { app, dialog, BrowserWindow, shell, ipcMain } from 'electron';
 import * as path from 'path';
 import * as url from 'url';
 

default_app/main.ts

@@ -1,4 +1,4 @@
-import * as electron from 'electron/main';
+import * as electron from 'electron';
 
 import * as fs from 'fs';
 import * as path from 'path';
@@ -92,7 +92,7 @@ function loadApplicationPackage (packagePath: string) {
       try {
         packageJson = require(packageJsonPath);
       } catch (e) {
-        showErrorMessage(`Unable to parse ${packageJsonPath}\n\n${(e as Error).message}`);
+        showErrorMessage(`Unable to parse ${packageJsonPath}\n\n${e.message}`);
         return;
       }
 
@@ -111,7 +111,7 @@ function loadApplicationPackage (packagePath: string) {
       const filePath = Module._resolveFilename(packagePath, module, true);
       app.setAppPath(appPath || path.dirname(filePath));
     } catch (e) {
-      showErrorMessage(`Unable to find Electron app at ${packagePath}\n\n${(e as Error).message}`);
+      showErrorMessage(`Unable to find Electron app at ${packagePath}\n\n${e.message}`);
       return;
     }
 
@@ -119,7 +119,7 @@ function loadApplicationPackage (packagePath: string) {
     Module._load(packagePath, module, true);
   } catch (e) {
     console.error('App threw an error during load');
-    console.error((e as Error).stack || e);
+    console.error(e.stack || e);
     throw e;
   }
 }

default_app/preload.ts

@@ -1,4 +1,4 @@
-import { ipcRenderer, contextBridge } from 'electron/renderer';
+import { ipcRenderer, contextBridge } from 'electron';
 
 const policy = window.trustedTypes.createPolicy('electron-default-app', {
   // we trust the SVG contents

docs/README.md

@@ -106,6 +106,7 @@ These individual tutorials expand on topics discussed in the guide above.
 * [`File` Object](api/file-object.md)
 * [`<webview>` Tag](api/webview-tag.md)
 * [`window.open` Function](api/window-open.md)
+* [`BrowserWindowProxy` Object](api/browser-window-proxy.md)
 
 ### Modules for the Main Process:
 

docs/api/app.md

@@ -484,7 +484,6 @@ Returns:
 * `argv` string[] - An array of the second instance's command line arguments
 * `workingDirectory` string - The second instance's working directory
 * `additionalData` unknown - A JSON object of additional data passed from the second instance
-* `ackCallback` unknown - A function that can be used to send data back to the second instance
 
 This event will be emitted inside the primary instance of your application
 when a second instance has been executed and calls `app.requestSingleInstanceLock()`.
@@ -496,35 +495,12 @@ non-minimized.
 
 **Note:** If the second instance is started by a different user than the first, the `argv` array will not include the arguments.
 
-**Note:** `ackCallback` allows the user to send data back to the
-second instance during the `app.requestSingleInstanceLock()` flow.
-This callback can be used for cases where the second instance
-needs to obtain additional information from the first instance
-before quitting.
-
-Currently, the limit on the message size is kMaxMessageLength,
-or around 32kB. To be safe, keep the amount of data passed to 31kB at most.
-
-In order to call the callback, `event.preventDefault()` must be called, first.
-If the callback is not called in either case, `null` will be sent back.
-If `event.preventDefault()` is not called, but `ackCallback` is called
-by the user in the event, then the behaviour is undefined.
-
 This event is guaranteed to be emitted after the `ready` event of `app`
 gets emitted.
 
 **Note:** Extra command line arguments might be added by Chromium,
 such as `--original-process-start-time`.
 
-### Event: 'first-instance-ack'
-
-Returns:
-
-* `event` Event
-* `additionalData` unknown - A JSON object of additional data passed from the first instance, in response to the first instance's `second-instance` event.
-
-This event will be emitted within the second instance during the call to `app.requestSingleInstanceLock()`, when the first instance calls the `ackCallback` provided by the `second-instance` event handler.
-
 ## Methods
 
 The `app` object has the following methods:
@@ -983,13 +959,6 @@ starts:
 const { app } = require('electron')
 let myWindow = null
 
-app.on('first-instance-ack', (event, additionalData) => {
-  // Print out the ack received from the first instance.
-  // Note this event handler must come before the requestSingleInstanceLock call.
-  // Expected output: '{"myAckKey":"myAckValue"}'
-  console.log(JSON.stringify(additionalData))
-})
-
 const additionalData = { myKey: 'myValue' }
 const gotTheLock = app.requestSingleInstanceLock(additionalData)
 
@@ -997,19 +966,14 @@ if (!gotTheLock) {
   app.quit()
 } else {
   app.on('second-instance', (event, commandLine, workingDirectory, additionalData) => {
-    // We must call preventDefault if we're sending back data.
-    event.preventDefault()
     // Print out data received from the second instance.
-    // Expected output: '{"myKey":"myValue"}'
-    console.log(JSON.stringify(additionalData))
+    console.log(additionalData)
 
     // Someone tried to run a second instance, we should focus our window.
     if (myWindow) {
       if (myWindow.isMinimized()) myWindow.restore()
       myWindow.focus()
     }
-    const ackData = { myAckKey: 'myAckValue' }
-    ackCallback(ackData)
   })
 
   // Create myWindow, load the rest of the app, etc...

docs/api/browser-window-proxy.md

@@ -0,0 +1,54 @@
+## Class: BrowserWindowProxy
+
+> Manipulate the child browser window
+
+Process: [Renderer](../glossary.md#renderer-process)<br />
+_This class is not exported from the `'electron'` module. It is only available as a return value of other methods in the Electron API._
+
+The `BrowserWindowProxy` object is returned from `window.open` and provides
+limited functionality with the child window.
+
+### Instance Methods
+
+The `BrowserWindowProxy` object has the following instance methods:
+
+#### `win.blur()`
+
+Removes focus from the child window.
+
+#### `win.close()`
+
+Forcefully closes the child window without calling its unload event.
+
+#### `win.eval(code)`
+
+* `code` string
+
+Evaluates the code in the child window.
+
+#### `win.focus()`
+
+Focuses the child window (brings the window to front).
+
+#### `win.print()`
+
+Invokes the print dialog on the child window.
+
+#### `win.postMessage(message, targetOrigin)`
+
+* `message` any
+* `targetOrigin` string
+
+Sends a message to the child window with the specified origin or `*` for no
+origin preference.
+
+In addition to these methods, the child window implements `window.opener` object
+with no properties and a single method.
+
+### Instance Properties
+
+The `BrowserWindowProxy` object has the following instance properties:
+
+#### `win.closed`
+
+A `boolean` that is set to true after the child window gets closed.

docs/api/browser-window.md

@@ -341,6 +341,9 @@ It creates a new `BrowserWindow` with native properties as set by the `options`.
       [Chrome Content Scripts][chrome-content-scripts].  You can access this
       context in the dev tools by selecting the 'Electron Isolated Context'
       entry in the combo box at the top of the Console tab.
+    * `nativeWindowOpen` boolean (optional) - Whether to use native
+      `window.open()`. Defaults to `true`. Child windows will always have node
+      integration disabled unless `nodeIntegrationInSubFrames` is true.
     * `webviewTag` boolean (optional) - Whether to enable the [`<webview>` tag](webview-tag.md).
       Defaults to `false`. **Note:** The
       `preload` script configured for the `<webview>` will have node integration
@@ -388,7 +391,7 @@ It creates a new `BrowserWindow` with native properties as set by the `options`.
       contain the layout of the document—without requiring scrolling. Enabling
       this will cause the `preferred-size-changed` event to be emitted on the
       `WebContents` when the preferred size changes. Default is `false`.
-  * `titleBarOverlay` Object | Boolean (optional) -  When using a frameless window in conjunction with `win.setWindowButtonVisibility(true)` on macOS or using a `titleBarStyle` so that the standard window controls ("traffic lights" on macOS) are visible, this property enables the Window Controls Overlay [JavaScript APIs][overlay-javascript-apis] and [CSS Environment Variables][overlay-css-env-vars]. Specifying `true` will result in an overlay with default system colors. Default is `false`.
+  * `titleBarOverlay` Object | Boolean (optional) -  When using a frameless window in conjuction with `win.setWindowButtonVisibility(true)` on macOS or using a `titleBarStyle` so that the standard window controls ("traffic lights" on macOS) are visible, this property enables the Window Controls Overlay [JavaScript APIs][overlay-javascript-apis] and [CSS Environment Variables][overlay-css-env-vars]. Specifying `true` will result in an overlay with default system colors. Default is `false`.
     * `color` String (optional) _Windows_ - The CSS color of the Window Controls Overlay when enabled. Default is the system color.
     * `symbolColor` String (optional) _Windows_ - The CSS color of the symbols on the Window Controls Overlay when enabled. Default is the system color.
     * `height` Integer (optional) _macOS_ _Windows_ - The height of the title bar and Window Controls Overlay in pixels. Default is system height.
@@ -454,7 +457,7 @@ window.onbeforeunload = (e) => {
   // a non-void value will silently cancel the close.
   // It is recommended to use the dialog API to let the user confirm closing the
   // application.
-  e.returnValue = false // equivalent to `return false` but not recommended
+  e.returnValue = false
 }
 ```
 
@@ -1808,6 +1811,16 @@ with `addBrowserView` or `setBrowserView`.
 **Note:** The BrowserView API is currently experimental and may change or be
 removed in future Electron releases.
 
+#### `win.setTitleBarOverlay(options)` _Windows_
+
+* `options` Object
+  * `color` String (optional) _Windows_ - The CSS color of the Window Controls Overlay when enabled.
+  * `symbolColor` String (optional) _Windows_ - The CSS color of the symbols on the Window Controls Overlay when enabled.
+  * `height` Integer (optional) _Windows_ - The height of the title bar and Window Controls Overlay in pixels.
+
+On a Window with Window Controls Overlay already enabled, this method updates
+the style of the title bar overlay.
+
 [runtime-enabled-features]: https://cs.chromium.org/chromium/src/third_party/blink/renderer/platform/runtime_enabled_features.json5?l=70
 [page-visibility-api]: https://developer.mozilla.org/en-US/docs/Web/API/Page_Visibility_API
 [quick-look]: https://en.wikipedia.org/wiki/Quick_Look

docs/api/crash-reporter.md

@@ -27,7 +27,6 @@ Or use a 3rd party hosted solution:
 * [Backtrace](https://backtrace.io/electron/)
 * [Sentry](https://docs.sentry.io/clients/electron)
 * [BugSplat](https://www.bugsplat.com/docs/platforms/electron)
-* [Bugsnag](https://docs.bugsnag.com/platforms/electron/)
 
 Crash reports are stored temporarily before being uploaded in a directory
 underneath the app's user data directory, called 'Crashpad'. You can override

docs/api/dock.md

@@ -28,7 +28,7 @@ When `informational` is passed, the dock icon will bounce for one second.
 However, the request remains active until either the application becomes active
 or the request is canceled.
 
-**Note:** This method can only be used while the app is not focused; when the app is focused it will return -1.
+**Nota Bene:** This method can only be used while the app is not focused; when the app is focused it will return -1.
 
 #### `dock.cancelBounce(id)` _macOS_
 

docs/api/incoming-message.md

@@ -80,25 +80,3 @@ An `Integer` indicating the HTTP protocol major version number.
 An `Integer` indicating the HTTP protocol minor version number.
 
 [event-emitter]: https://nodejs.org/api/events.html#events_class_eventemitter
-
-#### `response.rawHeaders`
-
-A `string[]` containing the raw HTTP response headers exactly as they were
-received. The keys and values are in the same list. It is not a list of
-tuples. So, the even-numbered offsets are key values, and the odd-numbered
-offsets are the associated values. Header names are not lowercased, and
-duplicates are not merged.
-
-```javascript
-// Prints something like:
-//
-// [ 'user-agent',
-//   'this is invalid because there can be only one',
-//   'User-Agent',
-//   'curl/7.22.0',
-//   'Host',
-//   '127.0.0.1:8000',
-//   'ACCEPT',
-//   '*/*' ]
-console.log(request.rawHeaders)
-```

docs/api/ipc-main.md

@@ -1,3 +1,10 @@
+---
+title: "ipcMain"
+description: "Communicate asynchronously from the main process to renderer processes."
+slug: ipc-main
+hide_title: false
+---
+
 # ipcMain
 
 > Communicate asynchronously from the main process to renderer processes.
@@ -9,7 +16,9 @@ process, it handles asynchronous and synchronous messages sent from a renderer
 process (web page). Messages sent from a renderer will be emitted to this
 module.
 
-## Sending Messages
+For usage examples, check out the [IPC tutorial].
+
+## Sending messages
 
 It is also possible to send messages from the main process to the renderer
 process, see [webContents.send][web-contents-send] for more information.
@@ -21,36 +30,6 @@ process, see [webContents.send][web-contents-send] for more information.
   coming from frames that aren't the main frame (e.g. iframes) whereas
   `event.sender.send(...)` will always send to the main frame.
 
-An example of sending and handling messages between the render and main
-processes:
-
-```javascript
-// In main process.
-const { ipcMain } = require('electron')
-ipcMain.on('asynchronous-message', (event, arg) => {
-  console.log(arg) // prints "ping"
-  event.reply('asynchronous-reply', 'pong')
-})
-
-ipcMain.on('synchronous-message', (event, arg) => {
-  console.log(arg) // prints "ping"
-  event.returnValue = 'pong'
-})
-```
-
-```javascript
-// In renderer process (web page).
-// NB. Electron APIs are only accessible from preload, unless contextIsolation is disabled.
-// See https://www.electronjs.org/docs/tutorial/process-model#preload-scripts for more details.
-const { ipcRenderer } = require('electron')
-console.log(ipcRenderer.sendSync('synchronous-message', 'ping')) // prints "pong"
-
-ipcRenderer.on('asynchronous-reply', (event, arg) => {
-  console.log(arg) // prints "pong"
-})
-ipcRenderer.send('asynchronous-message', 'ping')
-```
-
 ## Methods
 
 The `ipcMain` module has the following method to listen for events:
@@ -59,7 +38,7 @@ The `ipcMain` module has the following method to listen for events:
 
 * `channel` string
 * `listener` Function
-  * `event` IpcMainEvent
+  * `event` [IpcMainEvent][ipc-main-event]
   * `...args` any[]
 
 Listens to `channel`, when a new message arrives `listener` would be called with
@@ -69,7 +48,7 @@ Listens to `channel`, when a new message arrives `listener` would be called with
 
 * `channel` string
 * `listener` Function
-  * `event` IpcMainEvent
+  * `event` [IpcMainEvent][ipc-main-event]
   * `...args` any[]
 
 Adds a one time `listener` function for the event. This `listener` is invoked
@@ -93,8 +72,8 @@ Removes listeners of the specified `channel`.
 ### `ipcMain.handle(channel, listener)`
 
 * `channel` string
-* `listener` Function<Promise\<void> | any>
-  * `event` IpcMainInvokeEvent
+* `listener` Function<Promise\<void&#62; | any&#62;
+  * `event` [IpcMainInvokeEvent][ipc-main-invoke-event]
   * `...args` any[]
 
 Adds a handler for an `invoke`able IPC. This handler will be called whenever a
@@ -104,14 +83,14 @@ If `listener` returns a Promise, the eventual result of the promise will be
 returned as a reply to the remote caller. Otherwise, the return value of the
 listener will be used as the value of the reply.
 
-```js
-// Main process
+```js title='Main Process'
 ipcMain.handle('my-invokable-ipc', async (event, ...args) => {
   const result = await somePromise(...args)
   return result
 })
+```
 
-// Renderer process
+```js title='Renderer Process'
 async () => {
   const result = await ipcRenderer.invoke('my-invokable-ipc', arg1, arg2)
   // ...
@@ -130,7 +109,7 @@ provided to the renderer process. Please refer to
 ### `ipcMain.handleOnce(channel, listener)`
 
 * `channel` string
-* `listener` Function<Promise\<void> | any>
+* `listener` Function<Promise\<void&#62; | any&#62;
   * `event` IpcMainInvokeEvent
   * `...args` any[]
 
@@ -146,13 +125,16 @@ Removes any handler for `channel`, if present.
 ## IpcMainEvent object
 
 The documentation for the `event` object passed to the `callback` can be found
-in the [`ipc-main-event`](structures/ipc-main-event.md) structure docs.
+in the [`ipc-main-event`][ipc-main-event] structure docs.
 
 ## IpcMainInvokeEvent object
 
 The documentation for the `event` object passed to `handle` callbacks can be
-found in the [`ipc-main-invoke-event`](structures/ipc-main-invoke-event.md)
+found in the [`ipc-main-invoke-event`][ipc-main-invoke-event]
 structure docs.
 
+[IPC tutorial]: ../tutorial/ipc.md
 [event-emitter]: https://nodejs.org/api/events.html#events_class_eventemitter
-[web-contents-send]: web-contents.md#contentssendchannel-args
+[web-contents-send]: ../api/web-contents.md#contentssendchannel-args
+[ipc-main-event]:../api/structures/ipc-main-event.md
+[ipc-main-invoke-event]:../api/structures/ipc-main-invoke-event.md

docs/api/ipc-renderer.md

@@ -1,3 +1,10 @@
+---
+title: "ipcRenderer"
+description: "Communicate asynchronously from a renderer process to the main process."
+slug: ipc-renderer
+hide_title: false
+---
+
 # ipcRenderer
 
 > Communicate asynchronously from a renderer process to the main process.
@@ -9,7 +16,7 @@ methods so you can send synchronous and asynchronous messages from the render
 process (web page) to the main process. You can also receive replies from the
 main process.
 
-See [ipcMain](ipc-main.md) for code examples.
+See [IPC tutorial](../tutorial/ipc.md) for code examples.
 
 ## Methods
 
@@ -70,7 +77,7 @@ throw an exception.
 > them. Attempting to send such objects over IPC will result in an error.
 
 The main process handles it by listening for `channel` with the
-[`ipcMain`](ipc-main.md) module.
+[`ipcMain`](./ipc-main.md) module.
 
 If you need to transfer a [`MessagePort`][] to the main process, use [`ipcRenderer.postMessage`](#ipcrendererpostmessagechannel-message-transfer).
 
@@ -98,7 +105,7 @@ throw an exception.
 > them. Attempting to send such objects over IPC will result in an error.
 
 The main process should listen for `channel` with
-[`ipcMain.handle()`](ipc-main.md#ipcmainhandlechannel-listener).
+[`ipcMain.handle()`](./ipc-main.md#ipcmainhandlechannel-listener).
 
 For example:
 
@@ -124,11 +131,11 @@ If you do not need a response to the message, consider using [`ipcRenderer.send`
 * `channel` string
 * `...args` any[]
 
-Returns `any` - The value sent back by the [`ipcMain`](ipc-main.md) handler.
+Returns `any` - The value sent back by the [`ipcMain`](./ipc-main.md) handler.
 
 Send a message to the main process via `channel` and expect a result
 synchronously. Arguments will be serialized with the [Structured Clone
-Algorithm][SCA], just like [`window.postMessage`][], so prototype chains will not be
+Algorithm][SCA], just like [`window.postMessage`], so prototype chains will not be
 included. Sending Functions, Promises, Symbols, WeakMaps, or WeakSets will
 throw an exception.
 
@@ -140,13 +147,13 @@ throw an exception.
 > Electron's IPC to the main process, as the main process would have no way to decode
 > them. Attempting to send such objects over IPC will result in an error.
 
-The main process handles it by listening for `channel` with [`ipcMain`](ipc-main.md) module,
+The main process handles it by listening for `channel` with [`ipcMain`](./ipc-main.md) module,
 and replies by setting `event.returnValue`.
 
 > :warning: **WARNING**: Sending a synchronous message will block the whole
 > renderer process until the reply is received, so use this method only as a
 > last resort. It's much better to use the asynchronous version,
-> [`invoke()`](ipc-renderer.md#ipcrendererinvokechannel-args).
+> [`invoke()`](./ipc-renderer.md#ipcrendererinvokechannel-args).
 
 ### `ipcRenderer.postMessage(channel, message, [transfer])`
 
@@ -158,7 +165,7 @@ Send a message to the main process, optionally transferring ownership of zero
 or more [`MessagePort`][] objects.
 
 The transferred `MessagePort` objects will be available in the main process as
-[`MessagePortMain`](message-port-main.md) objects by accessing the `ports`
+[`MessagePortMain`](./message-port-main.md) objects by accessing the `ports`
 property of the emitted event.
 
 For example:
@@ -197,7 +204,7 @@ the host page instead of the main process.
 ## Event object
 
 The documentation for the `event` object passed to the `callback` can be found
-in the [`ipc-renderer-event`](structures/ipc-renderer-event.md) structure docs.
+in the [`ipc-renderer-event`](./structures/ipc-renderer-event.md) structure docs.
 
 [event-emitter]: https://nodejs.org/api/events.html#events_class_eventemitter
 [SCA]: https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm

docs/api/menu-item.md

@@ -14,7 +14,7 @@ See [`Menu`](menu.md) for examples.
     * `menuItem` MenuItem
     * `browserWindow` [BrowserWindow](browser-window.md) | undefined - This will not be defined if no window is open.
     * `event` [KeyboardEvent](structures/keyboard-event.md)
-  * `role` string (optional) - Can be `undo`, `redo`, `cut`, `copy`, `paste`, `pasteAndMatchStyle`, `delete`, `selectAll`, `reload`, `forceReload`, `toggleDevTools`, `resetZoom`, `zoomIn`, `zoomOut`, `toggleSpellChecker`, `togglefullscreen`, `window`, `minimize`, `close`, `help`, `about`, `services`, `hide`, `hideOthers`, `unhide`, `quit`, 'showSubstitutions', 'toggleSmartQuotes', 'toggleSmartDashes', 'toggleTextReplacement', `startSpeaking`, `stopSpeaking`, `zoom`, `front`, `appMenu`, `fileMenu`, `editMenu`, `viewMenu`, `shareMenu`, `recentDocuments`, `toggleTabBar`, `selectNextTab`, `selectPreviousTab`, `mergeAllWindows`, `clearRecentDocuments`, `moveTabToNewWindow` or `windowMenu` - Define the action of the menu item, when specified the
+  * `role` string (optional) - Can be `undo`, `redo`, `cut`, `copy`, `paste`, `pasteAndMatchStyle`, `delete`, `selectAll`, `reload`, `forceReload`, `toggleDevTools`, `resetZoom`, `zoomIn`, `zoomOut`, `toggleSpellChecker`, `togglefullscreen`, `window`, `minimize`, `close`, `help`, `about`, `services`, `hide`, `hideOthers`, `unhide`, `quit`, `startSpeaking`, `stopSpeaking`, `zoom`, `front`, `appMenu`, `fileMenu`, `editMenu`, `viewMenu`, `shareMenu`, `recentDocuments`, `toggleTabBar`, `selectNextTab`, `selectPreviousTab`, `mergeAllWindows`, `clearRecentDocuments`, `moveTabToNewWindow` or `windowMenu` - Define the action of the menu item, when specified the
     `click` property will be ignored. See [roles](#roles).
   * `type` string (optional) - Can be `normal`, `separator`, `submenu`, `checkbox` or
     `radio`.
@@ -100,10 +100,6 @@ The following additional roles are available on _macOS_:
 * `hide` - Map to the `hide` action.
 * `hideOthers` - Map to the `hideOtherApplications` action.
 * `unhide` - Map to the `unhideAllApplications` action.
-* `showSubstitutions` - Map to the `orderFrontSubstitutionsPanel` action.
-* `toggleSmartQuotes` - Map to the `toggleAutomaticQuoteSubstitution` action.
-* `toggleSmartDashes` - Map to the `toggleAutomaticDashSubstitution` action.
-* `toggleTextReplacement` - Map to the `toggleAutomaticTextReplacement` action.
 * `startSpeaking` - Map to the `startSpeaking` action.
 * `stopSpeaking` - Map to the `stopSpeaking` action.
 * `front` - Map to the `arrangeInFront` action.
@@ -124,7 +120,7 @@ When specifying a `role` on macOS, `label` and `accelerator` are the only
 options that will affect the menu item. All other options will be ignored.
 Lowercase `role`, e.g. `toggledevtools`, is still supported.
 
-**Note:** The `enabled` and `visibility` properties are not available for top-level menu items in the tray on macOS.
+**Nota Bene:** The `enabled` and `visibility` properties are not available for top-level menu items in the tray on macOS.
 
 ### Instance Properties
 

docs/api/native-theme.md

@@ -67,3 +67,8 @@ or is being instructed to show a high-contrast UI.
 
 A `boolean` for if the OS / Chromium currently has an inverted color scheme
 or is being instructed to use an inverted color scheme.
+
+### `nativeTheme.inForcedColorsMode` _Windows_ _Readonly_
+
+A `boolean` indicating whether Chromium is in forced colors mode, controlled by system accessibility settings.
+Currently, Windows high contrast is the only system setting that triggers forced colors mode.

docs/api/session.md

@@ -868,6 +868,20 @@ this session just before normal `preload` scripts run.
 Returns `string[]` an array of paths to preload scripts that have been
 registered.
 
+#### `ses.setCodeCachePath(path)`
+
+* `path` String - Absolute path to store the v8 generated JS code cache from the renderer.
+
+Sets the directory to store the generated JS [code cache](https://v8.dev/blog/code-caching-for-devs) for this session. The directory is not required to be created by the user before this call, the runtime will create if it does not exist otherwise will use the existing directory. If directory cannot be created, then code cache will not be used and all operations related to code cache will fail silently inside the runtime. By default, the directory will be `Code Cache` under the
+respective user data folder.
+
+#### `ses.clearCodeCaches(options)`
+
+* `options` Object
+  * `urls` String[] (optional) - An array of url corresponding to the resource whose generated code cache needs to be removed. If the list is empty then all entries in the cache directory will be removed.
+
+Returns `Promise<void>` - resolves when the code cache clear operation is complete.
+
 #### `ses.setSpellCheckerEnabled(enable)`
 
 * `enable` boolean

docs/api/structures/post-body.md

@@ -7,3 +7,17 @@
   the `enctype` attribute of the submitted HTML form.
 * `boundary` string (optional) - The boundary used to separate multiple parts of
   the message. Only valid when `contentType` is `multipart/form-data`.
+
+Note that keys starting with `--` are not currently supported. For example, this will errantly submit as `multipart/form-data` when `nativeWindowOpen` is set to `false` in webPreferences:
+
+```html
+<form
+  target="_blank"
+  method="POST"
+  enctype="application/x-www-form-urlencoded"
+  action="https://postman-echo.com/post"
+>
+  <input type="text" name="--theKey">
+  <input type="submit">
+</form>
+```

docs/api/web-contents.md

@@ -290,7 +290,7 @@ Returns:
 * `frameProcessId` Integer
 * `frameRoutingId` Integer
 
-Emitted when a server side redirect occurs during navigation.  For example a 302
+Emitted as a server side redirect occurs during navigation.  For example a 302
 redirect.
 
 This event will be emitted after `did-start-navigation` and always before the
@@ -508,23 +508,6 @@ Returns:
 
 Emitted when the user is requesting to change the zoom level using the mouse wheel.
 
-#### Event: 'blur'
-
-Emitted when the `WebContents` loses focus.
-
-#### Event: 'focus'
-
-Emitted when the `WebContents` gains focus.
-
-Note that on macOS, having focus means the `WebContents` is the first responder
-of window, so switching focus between windows would not trigger the `focus` and
-`blur` events of `WebContents`, as the first responder of each window is not
-changed.
-
-The `focus` and `blur` events of `WebContents` should only be used to detect
-focus change between different `WebContents` and `BrowserView` in the same
-window.
-
 #### Event: 'devtools-opened'
 
 Emitted when DevTools is opened.

docs/api/web-request.md

@@ -98,7 +98,6 @@ Some examples of valid `urls`:
     * `resourceType` string - Can be `mainFrame`, `subFrame`, `stylesheet`, `script`, `image`, `font`, `object`, `xhr`, `ping`, `cspReport`, `media`, `webSocket` or `other`.
     * `referrer` string
     * `timestamp` Double
-    * `uploadData` [UploadData[]](structures/upload-data.md) (optional)
     * `requestHeaders` Record<string, string>
   * `callback` Function
     * `beforeSendResponse` Object

docs/api/window-open.md

@@ -12,6 +12,10 @@ useful for app sub-windows that act as preference panels, or similar, as the
 parent can render to the sub-window directly, as if it were a `div` in the
 parent. This is the same behavior as in the browser.
 
+When `nativeWindowOpen` is set to false, `window.open` instead results in the
+creation of a [`BrowserWindowProxy`](browser-window-proxy.md), a light wrapper
+around `BrowserWindow`.
+
 Electron pairs this native Chrome `Window` with a BrowserWindow under the hood.
 You can take advantage of all the customization available when creating a
 BrowserWindow in the main process by using `webContents.setWindowOpenHandler()`
@@ -30,7 +34,7 @@ because it is invoked in the main process.
 * `frameName` string (optional)
 * `features` string (optional)
 
-Returns [`Window`](https://developer.mozilla.org/en-US/docs/Web/API/Window) | null
+Returns [`BrowserWindowProxy`](browser-window-proxy.md) | [`Window`](https://developer.mozilla.org/en-US/docs/Web/API/Window)
 
 `features` is a comma-separated key-value list, following the standard format of
 the browser. Electron will parse `BrowserWindowConstructorOptions` out of this
@@ -104,3 +108,33 @@ mainWindow.webContents.setWindowOpenHandler(({ url }) => {
 const childWindow = window.open('', 'modal')
 childWindow.document.write('<h1>Hello</h1>')
 ```
+
+### `BrowserWindowProxy` example
+
+```javascript
+
+// main.js
+const mainWindow = new BrowserWindow({
+  webPreferences: { nativeWindowOpen: false }
+})
+
+mainWindow.webContents.setWindowOpenHandler(({ url }) => {
+  if (url.startsWith('https://github.com/')) {
+    return { action: 'allow' }
+  }
+  return { action: 'deny' }
+})
+
+mainWindow.webContents.on('did-create-window', (childWindow) => {
+  // For example...
+  childWindow.webContents.on('will-navigate', (e) => {
+    e.preventDefault()
+  })
+})
+```
+
+```javascript
+// renderer.js
+const windowProxy = window.open('https://github.com/', null, 'minimizable=false')
+windowProxy.postMessage('hi', '*')
+```

docs/breaking-changes.md

@@ -12,37 +12,6 @@ This document uses the following convention to categorize breaking changes:
 * **Deprecated:** An API was marked as deprecated. The API will continue to function, but will emit a deprecation warning, and will be removed in a future release.
 * **Removed:** An API or feature was removed, and is no longer supported by Electron.
 
-## Planned Breaking API Changes (20.0)
-
-### Default Changed: renderers without `nodeIntegration: true` are sandboxed by default
-
-Previously, renderers that specified a preload script defaulted to being
-unsandboxed. This meant that by default, preload scripts had access to Node.js.
-In Electron 20, this default has changed. Beginning in Electron 20, renderers
-will be sandboxed by default, unless `nodeIntegration: true` or `sandbox: false`
-is specified.
-
-If your preload scripts do not depend on Node, no action is needed. If your
-preload scripts _do_ depend on Node, either refactor them to remove Node usage
-from the renderer, or explicitly specify `sandbox: false` for the relevant
-renderers.
-
-## Planned Breaking API Changes (19.0)
-
-*None (yet)*
-
-## Planned Breaking API Changes (18.0)
-
-### Removed: `nativeWindowOpen`
-
-Prior to Electron 15, `window.open` was by default shimmed to use
-`BrowserWindowProxy`. This meant that `window.open('about:blank')` did not work
-to open synchronously scriptable child windows, among other incompatibilities.
-Since Electron 15, `nativeWindowOpen` has been enabled by default.
-
-See the documentation for [window.open in Electron](api/window-open.md)
-for more details.
-
 ## Planned Breaking API Changes (17.0)
 
 ### Removed: `desktopCapturer.getSources` in the renderer

docs/development/build-instructions-gn.md

@@ -131,7 +131,7 @@ $ gn gen out/Release --args="import(\"//electron/build/args/release.gn\")"
 Also you shouldn't have to run `gn gen` again—if you want to change the build arguments, you can run `gn args out/Testing` to bring up an editor. To see the list of available build configuration options, run `gn args out/Testing --list`.
 
 **To build, run `ninja` with the `electron` target:**
-Note: This will also take a while and probably heat up your lap.
+Nota Bene: This will also take a while and probably heat up your lap.
 
 For the testing configuration:
 

docs/development/build-instructions-linux.md

@@ -7,21 +7,7 @@ Follow the guidelines below for building **Electron itself** on Linux, for the p
 ## Prerequisites
 
 * At least 25GB disk space and 8GB RAM.
-* Python 2.7.x. Some distributions like CentOS 6.x still use Python 2.6.x
-  so you may need to check your Python version with `python -V`.
-
-  Please also ensure that your system and Python version support at least TLS 1.2.
-  For a quick test, run the following script:
-
-  ```sh
-  $ npx @electron/check-python-tls
-  ```
-
-  If the script returns that your configuration is using an outdated security
-  protocol, use your system's package manager to update Python to the latest
-  version in the 2.7.x branch. Alternatively, visit https://www.python.org/downloads/
-  for detailed instructions.
-
+* Python >= 3.7.
 * Node.js. There are various ways to install Node. You can download
   source code from [nodejs.org](https://nodejs.org) and compile it.
   Doing so permits installing Node on your own home directory as a standard user.
@@ -29,17 +15,7 @@ Follow the guidelines below for building **Electron itself** on Linux, for the p
 * [clang](https://clang.llvm.org/get_started.html) 3.4 or later.
 * Development headers of GTK 3 and libnotify.
 
-On Ubuntu >= 20.04, install the following libraries:
-
-```sh
-$ sudo apt-get install build-essential clang libdbus-1-dev libgtk-3-dev \
-                       libnotify-dev libasound2-dev libcap-dev \
-                       libcups2-dev libxtst-dev \
-                       libxss1 libnss3-dev gcc-multilib g++-multilib curl \
-                       gperf bison python3-dbusmock openjdk-8-jre
-```
-
-On Ubuntu < 20.04, install the following libraries:
+On Ubuntu, install the following libraries:
 
 ```sh
 $ sudo apt-get install build-essential clang libdbus-1-dev libgtk-3-dev \

docs/development/build-instructions-macos.md

@@ -6,45 +6,12 @@ Follow the guidelines below for building **Electron itself** on macOS, for the p
 
 ## Prerequisites
 
-* macOS >= 10.11.6
-* [Xcode](https://developer.apple.com/technologies/tools/) >= 9.0.0
+* macOS >= 11.6.0
+* [Xcode](https://developer.apple.com/technologies/tools/). The exact version
+  needed depends on what branch you are building, but the latest version of
+  Xcode is generally a good bet for building `main`.
 * [node.js](https://nodejs.org) (external)
-* Python 2.7 with support for TLS 1.2
-
-## Python
-
-Please also ensure that your system and Python version support at least TLS 1.2.
-This depends on both your version of macOS and Python. For a quick test, run:
-
-```sh
-$ npx @electron/check-python-tls
-```
-
-If the script returns that your configuration is using an outdated security
-protocol, you can either update macOS to High Sierra or install a new version
-of Python 2.7.x. To upgrade Python, use [Homebrew](https://brew.sh/):
-
-```sh
-$ brew install python@2 && brew link python@2 --force
-```
-
-If you are using Python as provided by Homebrew, you also need to install
-the following Python modules:
-
-* [pyobjc](https://pypi.org/project/pyobjc/#description)
-
-You can use `pip` to install it:
-
-```sh
-$ pip install pyobjc
-```
-
-## macOS SDK
-
-If you're developing Electron and don't plan to redistribute your
-custom Electron build, you may skip this section.
-
-Official Electron builds are built with [Xcode 12.2](https://download.developer.apple.com/Developer_Tools/Xcode_12.2/Xcode_12.2.xip), and the macOS 11.0 SDK. Building with a newer SDK works too, but the releases currently use the 11.0 SDK.
+* Python >= 3.7
 
 ## Building Electron
 

docs/development/coding-style.md

@@ -28,7 +28,7 @@ For C++ and Python, we follow Chromium's [Coding
 Style](https://chromium.googlesource.com/chromium/src/+/refs/heads/main/styleguide/styleguide.md).
 There is also a script `script/cpplint.py` to check whether all files conform.
 
-The Python version we are using now is Python 2.7.
+The Python version we are using now is Python 3.9.
 
 The C++ code uses a lot of Chromium's abstractions and types, so it's
 recommended to get acquainted with them. A good place to start is

docs/development/debugging.md

@@ -35,28 +35,6 @@ base::debug::StackTrace().Print();
 
 This will allow you to observe call chains and identify potential issue areas.
 
-## Breakpoint Debugging
-
-> Note that this will increase the size of the build significantly, taking up around 50G of disk space
-
-Write the following file to `electron/.git/info/exclude/debug.gn`
-
-```gn
-import("//electron/build/args/testing.gn")
-is_debug = true
-symbol_level = 2
-forbid_non_component_debug_builds = false
-```
-
-Then execute:
-
-```sh
-$ gn gen out/Debug --args="import(\"//electron/.git/info/exclude/debug.gn\") $GN_EXTRA_ARGS"
-$ ninja -C out/Debug electron
-```
-
-Now you can use `LLDB` for breakpoint debugging.
-
 ## Platform-Specific Debugging
 <!-- TODO(@codebytere): add debugging file for Linux-->
 

docs/fiddles/communication/two-processes/asynchronous-messages/index.html

@@ -1,27 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8">
-  </head>
-  <body>
-    <div>
-      <div>
-        <h1>Asynchronous messages</h1>
-        <i>Supports: Win, macOS, Linux <span>|</span> Process: Both</i>
-        <div>
-          <div>
-            <button id="async-msg">Ping</button>
-            <span id="async-reply"></span>
-          </div>
-          <p>Using <code>ipc</code> to send messages between processes asynchronously is the preferred method since it will return when finished without blocking other operations in the same process.</p>
-
-          <p>This example sends a "ping" from this process (renderer) to the main process. The main process then replies with "pong".</p>
-        </div>
-      </div>
-    </div>
-    <script>
-      // You can also require other files to run in this process
-      require('./renderer.js')
-    </script>
-  </body>
-</html>

docs/fiddles/communication/two-processes/asynchronous-messages/main.js

@@ -1,29 +0,0 @@
-const { app, BrowserWindow, ipcMain } = require('electron')
-
-let mainWindow = null
-
-function createWindow () {
-  const windowOptions = {
-    width: 600,
-    height: 400,
-    title: 'Asynchronous messages',
-    webPreferences: {
-      nodeIntegration: true
-    }
-  }
-
-  mainWindow = new BrowserWindow(windowOptions)
-  mainWindow.loadFile('index.html')
-
-  mainWindow.on('closed', () => {
-    mainWindow = null
-  })
-}
-
-app.whenReady().then(() => {
-  createWindow()
-})
-
-ipcMain.on('asynchronous-message', (event, arg) => {
-  event.sender.send('asynchronous-reply', 'pong')
-})

docs/fiddles/communication/two-processes/asynchronous-messages/renderer.js

@@ -1,12 +0,0 @@
-const { ipcRenderer } = require('electron')
-
-const asyncMsgBtn = document.getElementById('async-msg')
-
-asyncMsgBtn.addEventListener('click', () => {
-  ipcRenderer.send('asynchronous-message', 'ping')
-})
-
-ipcRenderer.on('asynchronous-reply', (event, arg) => {
-  const message = `Asynchronous message reply: ${arg}`
-  document.getElementById('async-reply').innerHTML = message
-})

docs/fiddles/communication/two-processes/synchronous-messages/index.html

@@ -1,27 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8">
-  </head>
-  <body>
-    <div>
-      <div>
-        <h1>Synchronous messages</h1>
-        <i>Supports: Win, macOS, Linux <span>|</span> Process: Both</i>
-        <div>
-          <div>
-            <button id="sync-msg">Ping</button>
-            <span id="sync-reply"></span>
-          </div>
-          <p>You can use the <code>ipc</code> module to send synchronous messages between processes as well, but note that the synchronous nature of this method means that it <b>will block</b> other operations while completing its task.</p>
-          
-          <p>This example sends a synchronous message, "ping", from this process (renderer) to the main process. The main process then replies with "pong".</p>
-        </div>
-      </div>
-    </div>
-    <script>
-      // You can also require other files to run in this process
-      require('./renderer.js')
-    </script>
-  </body>
-</html> 

docs/fiddles/communication/two-processes/synchronous-messages/main.js

@@ -1,29 +0,0 @@
-const { app, BrowserWindow, ipcMain } = require('electron')
-
-let mainWindow = null
-
-function createWindow () {
-  const windowOptions = {
-    width: 600,
-    height: 400,
-    title: 'Synchronous Messages',
-    webPreferences: {
-      nodeIntegration: true
-    }
-  }
-
-  mainWindow = new BrowserWindow(windowOptions)
-  mainWindow.loadFile('index.html')
-
-  mainWindow.on('closed', () => {
-    mainWindow = null
-  })
-}
-
-app.whenReady().then(() => {
-  createWindow()
-})
-
-ipcMain.on('synchronous-message', (event, arg) => {
-    event.returnValue = 'pong'
-})

docs/fiddles/communication/two-processes/synchronous-messages/renderer.js

@@ -1,9 +0,0 @@
-const { ipcRenderer } = require('electron')
-
-const syncMsgBtn = document.getElementById('sync-msg')
-
-syncMsgBtn.addEventListener('click', () => {
-    const reply = ipcRenderer.sendSync('synchronous-message', 'ping')
-    const message = `Synchronous message reply: ${reply}`
-    document.getElementById('sync-reply').innerHTML = message
-})

docs/fiddles/ipc/pattern-1/index.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
+    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'">
+    <title>Hello World!</title>
+  </head>
+  <body>
+    Title: <input id="title"/>
+    <button id="btn" type="button">Set</button>
+    <script src="./renderer.js"></script>
+  </body>
+</html>

docs/fiddles/ipc/pattern-1/main.js

@@ -0,0 +1,30 @@
+const {app, BrowserWindow, ipcMain} = require('electron')
+const path = require('path')
+
+function createWindow () {
+  const mainWindow = new BrowserWindow({
+    webPreferences: {
+      preload: path.join(__dirname, 'preload.js')
+    }
+  })
+
+  ipcMain.on('set-title', (event, title) => {
+    const webContents = event.sender
+    const win = BrowserWindow.fromWebContents(webContents)
+    win.setTitle(title)
+  })
+
+  mainWindow.loadFile('index.html')
+}
+
+app.whenReady().then(() => {
+  createWindow()
+  
+  app.on('activate', function () {
+    if (BrowserWindow.getAllWindows().length === 0) createWindow()
+  })
+})
+
+app.on('window-all-closed', function () {
+  if (process.platform !== 'darwin') app.quit()
+})

docs/fiddles/ipc/pattern-1/preload.js

@@ -0,0 +1,5 @@
+const { contextBridge, ipcRenderer } = require('electron')
+
+contextBridge.exposeInMainWorld('electronAPI', {
+    setTitle: (title) => ipcRenderer.send('set-title', title)
+})

docs/fiddles/ipc/pattern-1/renderer.js

@@ -0,0 +1,6 @@
+const setButton = document.getElementById('btn')
+const titleInput = document.getElementById('title')
+setButton.addEventListener('click', () => {
+    const title = titleInput.value
+    window.electronAPI.setTitle(title)
+});

docs/fiddles/ipc/pattern-2/index.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
+    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'">
+    <title>Dialog</title>
+  </head>
+  <body>
+    <button type="button" id="btn">Open a File</button>
+    File path: <strong id="filePath"></strong>
+    <script src='./renderer.js'></script>
+  </body>
+</html>

docs/fiddles/ipc/pattern-2/main.js

@@ -0,0 +1,32 @@
+const {app, BrowserWindow, ipcMain,dialog} = require('electron')
+const path = require('path')
+
+async function handleFileOpen() {
+  const { canceled, filePaths } = await dialog.showOpenDialog()
+  if (canceled) {
+    return
+  } else {
+    return filePaths[0]
+  }
+}
+
+function createWindow () {
+  const mainWindow = new BrowserWindow({
+    webPreferences: {
+      preload: path.join(__dirname, 'preload.js')
+    }
+  })
+  mainWindow.loadFile('index.html')
+}
+
+app.whenReady().then(() => {
+  ipcMain.handle('dialog:openFile', handleFileOpen)
+  createWindow()
+  app.on('activate', function () {
+    if (BrowserWindow.getAllWindows().length === 0) createWindow()
+  })
+})
+
+app.on('window-all-closed', function () {
+  if (process.platform !== 'darwin') app.quit()
+})

docs/fiddles/ipc/pattern-2/preload.js

@@ -0,0 +1,5 @@
+const { contextBridge, ipcRenderer } = require('electron')
+
+contextBridge.exposeInMainWorld('electronAPI',{
+  openFile: () => ipcRenderer.invoke('dialog:openFile')
+})

docs/fiddles/ipc/pattern-2/renderer.js

@@ -0,0 +1,7 @@
+const btn = document.getElementById('btn')
+const filePathElement = document.getElementById('filePath')
+
+btn.addEventListener('click', async () => {
+  const filePath = await window.electronAPI.openFile()
+  filePathElement.innerText = filePath
+})

docs/fiddles/ipc/pattern-3/index.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
+    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'">
+    <title>Menu Counter</title>
+  </head>
+  <body>
+    Current value: <strong id="counter">0</strong>
+    <script src="./renderer.js"></script>
+  </body>
+</html>

docs/fiddles/ipc/pattern-3/main.js

@@ -0,0 +1,48 @@
+const {app, BrowserWindow, Menu} = require('electron')
+const path = require('path')
+
+function createWindow () {
+  const mainWindow = new BrowserWindow({
+    webPreferences: {
+      preload: path.join(__dirname, 'preload.js')
+    }
+  })
+
+  const menu = Menu.buildFromTemplate([
+    {
+      label: app.name,
+      submenu: [
+      {
+        click: () => mainWindow.webContents.send('update-counter', 1),
+        label: 'Increment',
+      },
+      {
+        click: () => mainWindow.webContents.send('update-counter', -1),
+        label: 'Decrement',
+      }
+      ]
+    }
+
+  ])
+
+  Menu.setApplicationMenu(menu)
+  mainWindow.loadFile('index.html')
+
+  // Open the DevTools.
+  mainWindow.webContents.openDevTools()
+}
+
+app.whenReady().then(() => {
+  ipcMain.on('counter-value', (_event, value) => {
+    console.log(value) // will print value to Node console
+  })
+  createWindow()
+  
+  app.on('activate', function () {
+    if (BrowserWindow.getAllWindows().length === 0) createWindow()
+  })
+})
+
+app.on('window-all-closed', function () {
+  if (process.platform !== 'darwin') app.quit()
+})

docs/fiddles/ipc/pattern-3/preload.js

@@ -0,0 +1,5 @@
+const { contextBridge, ipcRenderer } = require('electron')
+
+contextBridge.exposeInMainWorld('electronAPI', {
+  handleCounter: (callback) => ipcRenderer.on('update-counter', callback)
+})

docs/fiddles/ipc/pattern-3/renderer.js

@@ -0,0 +1,8 @@
+const counter = document.getElementById('counter')
+
+window.electronAPI.handleCounter((event, value) => {
+    const oldValue = Number(counter.innerText)
+    const newValue = oldValue + value
+    counter.innerText = newValue
+    event.sender.send('counter-value', newValue)
+})

docs/tutorial/installation.md

@@ -73,7 +73,7 @@ url = ELECTRON_MIRROR + ELECTRON_CUSTOM_DIR + '/' + ELECTRON_CUSTOM_FILENAME
 For instance, to use the China CDN mirror:
 
 ```shell
-ELECTRON_MIRROR="https://npmmirror.com/mirrors/electron/"
+ELECTRON_MIRROR="https://cdn.npm.taobao.org/dist/electron/"
 ```
 
 By default, `ELECTRON_CUSTOM_DIR` is set to `v$VERSION`. To change the format,
@@ -83,12 +83,12 @@ resolves to `version-5.0.0`, `{{ version }}` resolves to `5.0.0`, and
 use the China non-CDN mirror:
 
 ```shell
-ELECTRON_MIRROR="https://npmmirror.com/mirrors/electron/"
+ELECTRON_MIRROR="https://npm.taobao.org/mirrors/electron/"
 ELECTRON_CUSTOM_DIR="{{ version }}"
 ```
 
 The above configuration will download from URLs such as
-`https://npmmirror.com/mirrors/electron/8.0.0/electron-v8.0.0-linux-x64.zip`.
+`https://npm.taobao.org/mirrors/electron/8.0.0/electron-v8.0.0-linux-x64.zip`.
 
 If your mirror serves artifacts with different checksums to the official
 Electron release you may have to set `electron_use_remote_checksums=1` to

docs/tutorial/ipc.md

@@ -0,0 +1,571 @@
+---
+title: Inter-Process Communication
+description: Use the ipcMain and ipcRenderer modules to communicate between Electron processes
+slug: ipc
+hide_title: false
+---
+
+# Inter-Process Communication
+
+Inter-process communication (IPC) is a key part of building feature-rich desktop applications
+in Electron. Because the main and renderer processes have different responsibilities in
+Electron's process model, IPC is the only way to perform many common tasks, such as calling a
+native API from your UI or triggering changes in your web contents from native menus.
+
+## IPC channels
+
+In Electron, processes communicate by passing messages through developer-defined "channels"
+with the [`ipcMain`] and [`ipcRenderer`] modules. These channels are
+**arbitrary** (you can name them anything you want) and **bidirectional** (you can use the
+same channel name for both modules).
+
+In this guide, we'll be going over some fundamental IPC patterns with concrete examples that
+you can use as a reference for your app code.
+
+## Understanding context-isolated processes
+
+Before proceeding to implementation details, you should be familiar with the idea of using a
+[preload script] to import Node.js and Electron modules in a context-isolated renderer process.
+
+* For a full overview of Electron's process model, you can read the [process model docs].
+* For a primer into exposing APIs from your preload script using the `contextBridge` module, check
+out the [context isolation tutorial].
+
+## Pattern 1: Renderer to main (one-way)
+
+To fire a one-way IPC message from a renderer process to the main process, you can use the
+[`ipcRenderer.send`] API to send a message that is then received by the [`ipcMain.on`] API.
+
+You usually use this pattern to call a main process API from your web contents. We'll demonstrate
+this pattern by creating a simple app that can programmatically change its window title.
+
+For this demo, you'll need to add code to your main process, your renderer process, and a preload
+script. The full code is below, but we'll be explaining each file individually in the following
+sections.
+
+```fiddle docs/fiddles/ipc/pattern-1
+```
+
+### 1. Listen for events with `ipcMain.on`
+
+In the main process, set an IPC listener on the `set-title` channel with the `ipcMain.on` API:
+
+```javascript {6-10,22} title='main.js (Main Process)'
+const {app, BrowserWindow, ipcMain} = require('electron')
+const path = require('path')
+
+//...
+
+function handleSetTitle (event, title) {
+  const webContents = event.sender
+  const win = BrowserWindow.fromWebContents(webContents)
+  win.setTitle(title)
+}
+
+function createWindow () {
+  const mainWindow = new BrowserWindow({
+    webPreferences: {
+      preload: path.join(__dirname, 'preload.js')
+    }
+  })
+  mainWindow.loadFile('index.html')
+}
+
+app.whenReady().then(() => {
+  ipcMain.on('set-title', handleSetTitle)
+  createWindow()
+}
+//...
+```
+
+The above `handleSetTitle` callback has two parameters: an [IpcMainEvent] structure and a
+`title` string. Whenever a message comes through the `set-title` channel, this function will
+find the BrowserWindow instance attached to the message sender and use the `win.setTitle`
+API on it.
+
+:::info
+Make sure you're loading the `index.html` and `preload.js` entry points for the following steps!
+:::
+
+### 2. Expose `ipcRenderer.send` via preload
+
+To send messages to the listener created above, you can use the `ipcRenderer.send` API.
+By default, the renderer process has no Node.js or Electron module access. As an app developer,
+you need to choose which APIs to expose from your preload script using the `contextBridge` API.
+
+In your preload script, add the following code, which will expose a global `window.electronAPI`
+variable to your renderer process.
+
+```javascript title='preload.js (Preload Script)'
+const { contextBridge, ipcRenderer } = require('electron')
+
+contextBridge.exposeInMainWorld('electronAPI', {
+    setTitle: (title) => ipcRenderer.send('set-title', title)
+})
+```
+
+At this point, you'll be able to use the `window.electronAPI.setTitle()` function in the renderer
+process.
+
+:::caution Security warning
+We don't directly expose the whole `ipcRenderer.send` API for [security reasons]. Make sure to
+limit the renderer's access to Electron APIs as much as possible.
+:::
+
+### 3. Build the renderer process UI
+
+In our BrowserWindow's loaded HTML file, add a basic user interface consisting of a text input
+and a button:
+
+```html {11-12} title='index.html'
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
+    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'">
+    <title>Hello World!</title>
+  </head>
+  <body>
+    Title: <input id="title"/>
+    <button id="btn" type="button">Set</button>
+    <script src="./renderer.js"></script>
+  </body>
+</html>
+```
+
+To make these elements interactive, we'll be adding a few lines of code in the imported
+`renderer.js` file that leverages the `window.electronAPI` functionality exposed from the preload
+script:
+
+```javascript title='renderer.js (Renderer Process)'
+const setButton = document.getElementById('btn')
+const titleInput = document.getElementById('title')
+setButton.addEventListener('click', () => {
+    const title = titleInput.value
+    window.electronAPI.setTitle(title)
+});
+```
+
+At this point, your demo should be fully functional. Try using the input field and see what happens
+to your BrowserWindow title!
+
+## Pattern 2: Renderer to main (two-way)
+
+A common application for two-way IPC is calling a main process module from your renderer process
+code and waiting for a result. This can be done by using [`ipcRenderer.invoke`] paired with
+[`ipcMain.handle`].
+
+In the following example, we'll be opening a native file dialog from the renderer process and
+returning the selected file's path.
+
+For this demo, you'll need to add code to your main process, your renderer process, and a preload
+script. The full code is below, but we'll be explaining each file individually in the following
+sections.
+
+```fiddle docs/fiddles/ipc/pattern-2
+```
+
+### 1. Listen for events with `ipcMain.handle`
+
+In the main process, we'll be creating a `handleFileOpen()` function that calls
+`dialog.showOpenDialog` and returns the value of the file path selected by the user. This function
+is used as a callback whenever an `ipcRender.invoke` message is sent through the `dialog:openFile`
+channel from the renderer process. The return value is then returned as a Promise to the original
+`invoke` call.
+
+:::caution A word on error handling
+Errors thrown through `handle` in the main process are not transparent as they
+are serialized and only the `message` property from the original error is
+provided to the renderer process. Please refer to
+[#24427](https://github.com/electron/electron/issues/24427) for details.
+:::
+
+```javascript {6-13,25} title='main.js (Main Process)'
+const { BrowserWindow, dialog, ipcMain } = require('electron')
+const path = require('path')
+
+//...
+
+async function handleFileOpen() {
+  const { canceled, filePaths } = await dialog.showOpenDialog()
+  if (canceled) {
+    return
+  } else {
+    return filePaths[0]
+  }
+}
+
+function createWindow () {
+  const mainWindow = new BrowserWindow({
+    webPreferences: {
+      preload: path.join(__dirname, 'preload.js')
+    }
+  })
+  mainWindow.loadFile('index.html')
+}
+
+app.whenReady(() => {
+  ipcMain.handle('dialog:openFile', handleFileOpen)
+  createWindow()
+})
+//...
+```
+
+:::tip on channel names
+The `dialog:` prefix on the IPC channel name has no effect on the code. It only serves
+as a namespace that helps with code readability.
+:::
+
+:::info
+Make sure you're loading the `index.html` and `preload.js` entry points for the following steps!
+:::
+
+### 2. Expose `ipcRenderer.invoke` via preload
+
+In the preload script, we expose a one-line `openFile` function that calls and returns the value of
+`ipcRenderer.invoke('dialog:openFile')`. We'll be using this API in the next step to call the
+native dialog from our renderer's user interface.
+
+```javascript title='preload.js (Preload Script)'
+const { contextBridge, ipcRenderer } = require('electron')
+
+contextBridge.exposeInMainWorld('electronAPI', {
+  openFile: () => ipcRenderer.invoke('dialog:openFile')
+})
+```
+
+:::caution Security warning
+We don't directly expose the whole `ipcRenderer.invoke` API for [security reasons]. Make sure to
+limit the renderer's access to Electron APIs as much as possible.
+:::
+
+### 3. Build the renderer process UI
+
+Finally, let's build the HTML file that we load into our BrowserWindow.
+
+```html {10-11} title='index.html'
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
+    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'">
+    <title>Dialog</title>
+  </head>
+  <body>
+    <button type="button" id="btn">Open a File</button>
+    File path: <strong id="filePath"></strong>
+    <script src='./renderer.js'></script>
+  </body>
+</html>
+```
+
+The UI consists of a single `#btn` button element that will be used to trigger our preload API, and
+a `#filePath` element that will be used to display the path of the selected file. Making these
+pieces work will take a few lines of code in the renderer process script:
+
+```javascript title='renderer.js (Renderer Process)'
+const btn = document.getElementById('btn')
+const filePathElement = document.getElementById('filePath')
+
+btn.addEventListener('click', async () => {
+  const filePath = await window.electronAPI.openFile()
+  filePathElement.innerText = filePath
+})
+```
+
+In the above snippet, we listen for clicks on the `#btn` button, and call our
+`window.electronAPI.openFile()` API to activate the native Open File dialog. We then display the
+selected file path in the `#filePath` element.
+
+### Note: legacy approaches
+
+The `ipcRenderer.invoke` API was added in Electron 7 as a developer-friendly way to tackle two-way
+IPC from the renderer process. However, there exist a couple alternative approaches to this IPC
+pattern.
+
+:::warning Avoid legacy approaches if possible
+We recommend using `ipcRenderer.invoke` whenever possible. The following two-way renderer-to-main
+patterns are documented for historical purposes.
+:::
+
+:::info
+For the following examples, we're calling `ipcRenderer` directly from the preload script to keep
+the code samples small.
+:::
+
+#### Using `ipcRenderer.send`
+
+The `ipcRenderer.send` API that we used for single-way communication can also be leveraged to
+perform two-way communication. This was the recommended way for asynchronous two-way communication
+via IPC prior to Electron 7.
+
+```javascript title='preload.js (Preload Script)'
+// You can also put expose this code to the renderer
+// process with the `contextBridge` API
+const { ipcRenderer } = require('electron')
+
+ipcRenderer.on('asynchronous-reply', (_event, arg) => {
+  console.log(arg) // prints "pong" in the DevTools console
+})
+ipcRenderer.send('asynchronous-message', 'ping')
+```
+
+```javascript title='main.js (Main Process)'
+ipcMain.on('asynchronous-message', (event, arg) => {
+  console.log(arg) // prints "ping" in the Node console
+  // works like `send`, but returning a message back
+  // to the renderer that sent the original message
+  event.reply('asynchronous-reply', 'pong')
+})
+```
+
+There are a couple downsides to this approach:
+
+* You need to set up a second `ipcRenderer.on` listener to handle the response in the renderer
+process. With `invoke`, you get the response value returned as a Promise to the original API call.
+* There's no obvious way to pair the `asynchronous-reply` message to the original
+`asynchronous-message` one. If you have very frequent messages going back and forth through these
+channels, you would need to add additional app code to track each call and response individually.
+
+#### Using `ipcRenderer.sendSync`
+
+The `ipcRenderer.sendSync` API sends a message to the main process and waits _synchronously_ for a
+response.
+
+```javascript title='main.js (Main Process)'
+const { ipcMain } = require('electron')
+ipcMain.on('synchronous-message', (event, arg) => {
+  console.log(arg) // prints "ping" in the Node console
+  event.returnValue = 'pong'
+})
+```
+
+```javascript title='preload.js (Preload Script)'
+// You can also put expose this code to the renderer
+// process with the `contextBridge` API
+const { ipcRenderer } = require('electron')
+
+const result = ipcRenderer.sendSync('synchronous-message', 'ping')
+console.log(result) // prints "pong" in the DevTools console
+```
+
+The structure of this code is very similar to the `invoke` model, but we recommend
+**avoiding this API** for performance reasons. Its synchronous nature means that it'll block the
+renderer process until a reply is received.
+
+## Pattern 3: Main to renderer
+
+When sending a message from the main process to a renderer process, you need to specify which
+renderer is receiving the message. Messages need to be sent to a renderer process
+via its [`WebContents`] instance. This WebContents instance contains a [`send`][webcontents-send] method
+that can be used in the same way as `ipcRenderer.send`.
+
+To demonstrate this pattern, we'll be building a number counter controlled by the native operating
+system menu.
+
+For this demo, you'll need to add code to your main process, your renderer process, and a preload
+script. The full code is below, but we'll be explaining each file individually in the following
+sections.
+
+```fiddle docs/fiddles/ipc/pattern-3
+```
+
+### 1. Send messages with the `webContents` module
+
+For this demo, we'll need to first build a custom menu in the main process using Electron's `Menu`
+module that uses the `webContents.send` API to send an IPC message from the main process to the
+target renderer.
+
+```javascript {11-26} title='main.js (Main Process)'
+const {app, BrowserWindow, Menu, ipcMain} = require('electron')
+const path = require('path')
+
+function createWindow () {
+  const mainWindow = new BrowserWindow({
+    webPreferences: {
+      preload: path.join(__dirname, 'preload.js')
+    }
+  })
+
+  const menu = Menu.buildFromTemplate([
+    {
+      label: app.name,
+      submenu: [
+        {
+          click: () => mainWindow.webContents.send('update-counter', 1),
+          label: 'Increment',
+        },
+        {
+          click: () => mainWindow.webContents.send('update-counter', -1),
+          label: 'Decrement',
+        }
+      ]
+    }
+  ])
+  Menu.setApplicationMenu(menu)
+
+  mainWindow.loadFile('index.html')
+}
+//...
+
+```
+
+For the purposes of the tutorial, it's important to note that the `click` handler
+sends a message (either `1` or `-1`) to the renderer process through the `counter` channel.
+
+```javascript
+click: () => mainWindow.webContents.send('update-counter', -1)
+```
+
+:::info
+Make sure you're loading the `index.html` and `preload.js` entry points for the following steps!
+:::
+
+### 2. Expose `ipcRenderer.on` via preload
+
+Like in the previous renderer-to-main example, we use the `contextBridge` and `ipcRenderer`
+modules in the preload script to expose IPC functionality to the renderer process:
+
+```javascript title='preload.js (Preload Script)'
+const { contextBridge, ipcRenderer } = require('electron')
+
+contextBridge.exposeInMainWorld('electronAPI', {
+    onUpdateCounter: (callback) => ipcRenderer.on('update-counter', callback)
+})
+```
+
+After loading the preload script, your renderer process should have access to the
+`window.electronAPI.onUpdateCounter()` listener function.
+
+:::caution Security warning
+We don't directly expose the whole `ipcRenderer.on` API for [security reasons]. Make sure to
+limit the renderer's access to Electron APIs as much as possible.
+:::
+
+:::info
+In the case of this minimal example, you can call `ipcRenderer.on` directly in the preload script
+rather than exposing it over the context bridge.
+
+```javascript title='preload.js (Preload Script)'
+const { ipcRenderer } = require('electron')
+
+window.addEventListener('DOMContentLoaded', () => {
+    const counter = document.getElementById('counter')
+    ipcRenderer.on('update-counter', (_event, value) => {
+        const oldValue = Number(counter.innerText)
+        const newValue = oldValue + value
+        counter.innerText = newValue
+    })
+})
+```
+
+However, this approach has limited flexibility compared to exposing your preload APIs
+over the context bridge, since your listener can't directly interact with your renderer code.
+:::
+
+### 3. Build the renderer process UI
+
+To tie it all together, we'll create an interface in the loaded HTML file that contains a
+`#counter` element that we'll use to display the values:
+
+```html {10} title='index.html'
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
+    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'">
+    <title>Menu Counter</title>
+  </head>
+  <body>
+    Current value: <strong id="counter">0</strong>
+    <script src="./renderer.js"></script>
+  </body>
+</html>
+```
+
+Finally, to make the values update in the HTML document, we'll add a few lines of DOM manipulation
+so that the value of the `#counter` element is updated whenever we fire an `update-counter` event.
+
+```javascript title='renderer.js (Renderer Process)'
+const counter = document.getElementById('counter')
+
+window.electronAPI.onUpdateCounter((_event, value) => {
+    const oldValue = Number(counter.innerText)
+    const newValue = oldValue + value
+    counter.innerText = newValue
+})
+```
+
+In the above code, we're passing in a callback to the `window.electronAPI.onUpdateCounter` function
+exposed from our preload script. The second `value` parameter corresponds to the `1` or `-1` we
+were passing in from the `webContents.send` call from the native menu.
+
+### Optional: returning a reply
+
+There's no equivalent for `ipcRenderer.invoke` for main-to-renderer IPC. Instead, you can
+send a reply back to the main process from within the `ipcRenderer.on` callback.
+
+We can demonstrate this with slight modifications to the code from the previous example. In the
+renderer process, use the `event` parameter to send a reply back to the main process through the
+`counter-value` channel.
+
+```javascript title='renderer.js (Renderer Process)'
+const counter = document.getElementById('counter')
+
+window.electronAPI.onUpdateCounter((event, value) => {
+  const oldValue = Number(counter.innerText)
+  const newValue = oldValue + value
+  counter.innerText = newValue
+  event.sender.send('counter-value', newValue)
+})
+```
+
+In the main process, listen for `counter-value` events and handle them appropriately.
+
+```javascript title='main.js (Main Process)'
+//...
+ipcMain.on('counter-value', (_event, value) => {
+  console.log(value) // will print value to Node console
+})
+//...
+```
+
+## Pattern 4: Renderer to renderer
+
+There's no direct way to send messages between renderer processes in Electron using the `ipcMain`
+and `ipcRenderer` modules. To achieve this, you have two options:
+
+* Use the main process as a message broker between renderers. This would involve sending a message
+from one renderer to the main process, which would forward the message to the other renderer.
+* Pass a [MessagePort] from the main process to both renderers. This will allow direct communication
+between renderers after the initial setup.
+
+## Object serialization
+
+Electron's IPC implementation uses the HTML standard
+[Structured Clone Algorithm][sca] to serialize objects passed between processes, meaning that
+only certain types of objects can be passed through IPC channels.
+
+In particular, DOM objects (e.g. `Element`, `Location` and `DOMMatrix`), Node.js objects
+backed by C++ classes (e.g. `process.env`, some members of `Stream`), and Electron objects
+backed by C++ classes (e.g. `WebContents`, `BrowserWindow` and `WebFrame`) are not serializable
+with Structured Clone.
+
+[context isolation tutorial]: context-isolation.md
+[security reasons]: ./context-isolation.md#security-considerations
+[`ipcMain`]: ../api/ipc-main.md
+[`ipcMain.handle`]: ../api/ipc-main.md#ipcmainhandlechannel-listener
+[`ipcMain.on`]: ../api/ipc-main.md
+[IpcMainEvent]: ../api/structures/ipc-main-event.md
+[`ipcRenderer`]: ../api/ipc-renderer.md
+[`ipcRenderer.invoke`]: ../api/ipc-renderer.md#ipcrendererinvokechannel-args
+[`ipcRenderer.send`]: ../api/ipc-renderer.md
+[MessagePort]: ./message-ports.md
+[preload script]: process-model.md#preload-scripts
+[process model docs]: process-model.md
+[sca]: https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm
+[`WebContents`]: ../api/web-contents.md
+[webcontents-send]: ../api/web-contents.md#contentssendchannel-args

docs/tutorial/support.md

@@ -10,7 +10,7 @@ for answers to questions,
 or to join in discussion with other developers who use Electron,
 you can interact with the community in these locations:
 
-* [Electron's Discord server](https://discord.com/invite/APGC3k5yaH) has channels for:
+* [`Electron's Discord`](https://discord.com/invite/electron) has channels for:
   * Getting help
   * Ecosystem apps like [Electron Forge](https://github.com/electron-userland/electron-forge) and [Electron Fiddle](https://github.com/electron/fiddle)
   * Sharing ideas with other Electron app developers
@@ -70,10 +70,10 @@ until the maintainers feel the maintenance burden is too high to continue doing
 
 ### Currently supported versions
 
-* 18.x.y
 * 17.x.y
 * 16.x.y
 * 15.x.y
+* 14.x.y
 
 ### End-of-life
 

docs/tutorial/testing-on-headless-ci.md

@@ -3,7 +3,7 @@
 Being based on Chromium, Electron requires a display driver to function.
 If Chromium can't find a display driver, Electron will fail to launch -
 and therefore not executing any of your tests, regardless of how you are running
-them. Testing Electron-based apps on Travis, CircleCI, Jenkins or similar Systems
+them. Testing Electron-based apps on Travis, Circle, Jenkins or similar Systems
 requires therefore a little bit of configuration. In essence, we need to use
 a virtual display driver.
 
@@ -49,9 +49,10 @@ install:
 
 For Jenkins, a [Xvfb plugin is available](https://wiki.jenkins-ci.org/display/JENKINS/Xvfb+Plugin).
 
-### CircleCI
+### Circle CI
 
-CircleCI is awesome and has Xvfb and `$DISPLAY` already set up, so no further configuration is required.
+Circle CI is awesome and has Xvfb and `$DISPLAY`
+[already set up, so no further configuration is required](https://circleci.com/docs/environment#browsers).
 
 ### AppVeyor
 

electron_paks.gni

@@ -193,13 +193,13 @@ template("electron_paks") {
       "//ui/strings:ui_strings",
     ]
 
-    input_locales = platform_pak_locales
+    input_locales = locales
     output_dir = "${invoker.output_dir}/locales"
 
     if (is_mac) {
       output_locales = locales_as_mac_outputs
     } else {
-      output_locales = platform_pak_locales
+      output_locales = locales
     }
   }
 

filenames.auto.gni

@@ -5,6 +5,7 @@ auto_filenames = {
     "docs/api/app.md",
     "docs/api/auto-updater.md",
     "docs/api/browser-view.md",
+    "docs/api/browser-window-proxy.md",
     "docs/api/browser-window.md",
     "docs/api/client-request.md",
     "docs/api/clipboard.md",
@@ -228,6 +229,7 @@ auto_filenames = {
     "lib/browser/devtools.ts",
     "lib/browser/guest-view-manager.ts",
     "lib/browser/guest-window-manager.ts",
+    "lib/browser/guest-window-proxy.ts",
     "lib/browser/init.ts",
     "lib/browser/ipc-main-impl.ts",
     "lib/browser/ipc-main-internal-utils.ts",

filenames.gni

@@ -53,8 +53,6 @@ filenames = {
     "shell/browser/ui/views/global_menu_bar_x11.h",
     "shell/browser/ui/x/event_disabler.cc",
     "shell/browser/ui/x/event_disabler.h",
-    "shell/browser/ui/x/window_state_watcher.cc",
-    "shell/browser/ui/x/window_state_watcher.h",
     "shell/browser/ui/x/x_window_utils.cc",
     "shell/browser/ui/x/x_window_utils.h",
   ]
@@ -350,6 +348,8 @@ filenames = {
     "shell/browser/child_web_contents_tracker.h",
     "shell/browser/cookie_change_notifier.cc",
     "shell/browser/cookie_change_notifier.h",
+    "shell/browser/electron_api_ipc_handler_impl.cc",
+    "shell/browser/electron_api_ipc_handler_impl.h",
     "shell/browser/electron_autofill_driver.cc",
     "shell/browser/electron_autofill_driver.h",
     "shell/browser/electron_autofill_driver_factory.cc",
@@ -358,8 +358,6 @@ filenames = {
     "shell/browser/electron_browser_client.h",
     "shell/browser/electron_browser_context.cc",
     "shell/browser/electron_browser_context.h",
-    "shell/browser/electron_browser_handler_impl.cc",
-    "shell/browser/electron_browser_handler_impl.h",
     "shell/browser/electron_browser_main_parts.cc",
     "shell/browser/electron_browser_main_parts.h",
     "shell/browser/electron_download_manager_delegate.cc",
@@ -376,6 +374,8 @@ filenames = {
     "shell/browser/electron_quota_permission_context.h",
     "shell/browser/electron_speech_recognition_manager_delegate.cc",
     "shell/browser/electron_speech_recognition_manager_delegate.h",
+    "shell/browser/electron_web_contents_utility_handler_impl.cc",
+    "shell/browser/electron_web_contents_utility_handler_impl.h",
     "shell/browser/electron_web_ui_controller_factory.cc",
     "shell/browser/electron_web_ui_controller_factory.h",
     "shell/browser/event_emitter_mixin.cc",
@@ -386,6 +386,8 @@ filenames = {
     "shell/browser/file_select_helper.cc",
     "shell/browser/file_select_helper.h",
     "shell/browser/file_select_helper_mac.mm",
+    "shell/browser/font/electron_font_access_delegate.cc",
+    "shell/browser/font/electron_font_access_delegate.h",
     "shell/browser/font_defaults.cc",
     "shell/browser/font_defaults.h",
     "shell/browser/hid/electron_hid_delegate.cc",
@@ -679,6 +681,8 @@ filenames = {
   ]
 
   lib_sources_extensions = [
+    "shell/browser/extensions/api/i18n/i18n_api.cc",
+    "shell/browser/extensions/api/i18n/i18n_api.h",
     "shell/browser/extensions/api/cryptotoken_private/cryptotoken_private_api.cc",
     "shell/browser/extensions/api/cryptotoken_private/cryptotoken_private_api.h",
     "shell/browser/extensions/api/management/electron_management_api_delegate.cc",

lib/asar/fs-wrapper.ts

@@ -30,11 +30,13 @@ const getOrCreateArchive = (archivePath: string) => {
     return cachedArchives.get(archivePath);
   }
 
-  const newArchive = asar.createArchive(archivePath);
-  if (!newArchive) return null;
-
-  cachedArchives.set(archivePath, newArchive);
-  return newArchive;
+  try {
+    const newArchive = new asar.Archive(archivePath);
+    cachedArchives.set(archivePath, newArchive);
+    return newArchive;
+  } catch {
+    return null;
+  }
 };
 
 const asarRe = /\.asar/i;

lib/browser/api/auto-updater/squirrel-update-win.ts

@@ -35,7 +35,7 @@ const spawnUpdate = function (args: string[], detached: boolean, callback: Funct
       spawnedArgs = args || [];
     }
   } catch (error1) {
-    error = error1 as Error;
+    error = error1;
 
     // Shouldn't happen, but still guard it.
     process.nextTick(function () {

lib/browser/api/browser-window.ts

@@ -72,7 +72,10 @@ BrowserWindow.getAllWindows = () => {
 
 BrowserWindow.getFocusedWindow = () => {
   for (const window of BrowserWindow.getAllWindows()) {
-    if (window.isFocused() || window.isDevToolsFocused()) return window;
+    const hasWC = window.webContents && !window.webContents.isDestroyed();
+    if (!window.isDestroyed() && hasWC) {
+      if (window.isFocused() || window.isDevToolsFocused()) return window;
+    }
   }
   return null;
 };

lib/browser/api/menu-item-roles.ts

@@ -5,8 +5,7 @@ const isWindows = process.platform === 'win32';
 const isLinux = process.platform === 'linux';
 
 type RoleId = 'about' | 'close' | 'copy' | 'cut' | 'delete' | 'forcereload' | 'front' | 'help' | 'hide' | 'hideothers' | 'minimize' |
-  'paste' | 'pasteandmatchstyle' | 'quit' | 'redo' | 'reload' | 'resetzoom' | 'selectall' | 'services' | 'recentdocuments' | 'clearrecentdocuments' |
-  'showsubstitutions' | 'togglesmartquotes' | 'togglesmartdashes' | 'toggletextreplacement' | 'startspeaking' | 'stopspeaking' |
+  'paste' | 'pasteandmatchstyle' | 'quit' | 'redo' | 'reload' | 'resetzoom' | 'selectall' | 'services' | 'recentdocuments' | 'clearrecentdocuments' | 'startspeaking' | 'stopspeaking' |
   'toggledevtools' | 'togglefullscreen' | 'undo' | 'unhide' | 'window' | 'zoom' | 'zoomin' | 'zoomout' | 'togglespellchecker' |
   'appmenu' | 'filemenu' | 'editmenu' | 'viewmenu' | 'windowmenu' | 'sharemenu'
 interface Role {
@@ -134,18 +133,6 @@ export const roleList: Record<RoleId, Role> = {
   clearrecentdocuments: {
     label: 'Clear Menu'
   },
-  showsubstitutions: {
-    label: 'Show Substitutions'
-  },
-  togglesmartquotes: {
-    label: 'Smart Quotes'
-  },
-  togglesmartdashes: {
-    label: 'Smart Dashes'
-  },
-  toggletextreplacement: {
-    label: 'Text Replacement'
-  },
   startspeaking: {
     label: 'Start Speaking'
   },
@@ -250,16 +237,6 @@ export const roleList: Record<RoleId, Role> = {
         { role: 'delete' },
         { role: 'selectAll' },
         { type: 'separator' },
-        {
-          label: 'Substitutions',
-          submenu: [
-            { role: 'showSubstitutions' },
-            { type: 'separator' },
-            { role: 'toggleSmartQuotes' },
-            { role: 'toggleSmartDashes' },
-            { role: 'toggleTextReplacement' }
-          ]
-        },
         {
           label: 'Speech',
           submenu: [

lib/browser/api/net.ts

@@ -61,25 +61,24 @@ class IncomingMessage extends Readable {
     const filteredHeaders: Record<string, string | string[]> = {};
     const { rawHeaders } = this._responseHead;
     rawHeaders.forEach(header => {
-      const keyLowerCase = header.key.toLowerCase();
-      if (Object.prototype.hasOwnProperty.call(filteredHeaders, keyLowerCase) &&
-          discardableDuplicateHeaders.has(keyLowerCase)) {
+      if (Object.prototype.hasOwnProperty.call(filteredHeaders, header.key) &&
+          discardableDuplicateHeaders.has(header.key)) {
         // do nothing with discardable duplicate headers
       } else {
-        if (keyLowerCase === 'set-cookie') {
+        if (header.key === 'set-cookie') {
           // keep set-cookie as an array per Node.js rules
           // see https://nodejs.org/api/http.html#http_message_headers
-          if (Object.prototype.hasOwnProperty.call(filteredHeaders, keyLowerCase)) {
-            (filteredHeaders[keyLowerCase] as string[]).push(header.value);
+          if (Object.prototype.hasOwnProperty.call(filteredHeaders, header.key)) {
+            (filteredHeaders[header.key] as string[]).push(header.value);
           } else {
-            filteredHeaders[keyLowerCase] = [header.value];
+            filteredHeaders[header.key] = [header.value];
           }
         } else {
           // for non-cookie headers, the values are joined together with ', '
-          if (Object.prototype.hasOwnProperty.call(filteredHeaders, keyLowerCase)) {
-            filteredHeaders[keyLowerCase] += `, ${header.value}`;
+          if (Object.prototype.hasOwnProperty.call(filteredHeaders, header.key)) {
+            filteredHeaders[header.key] += `, ${header.value}`;
           } else {
-            filteredHeaders[keyLowerCase] = header.value;
+            filteredHeaders[header.key] = header.value;
           }
         }
       }
@@ -87,15 +86,6 @@ class IncomingMessage extends Readable {
     return filteredHeaders;
   }
 
-  get rawHeaders () {
-    const rawHeadersArr: string[] = [];
-    const { rawHeaders } = this._responseHead;
-    rawHeaders.forEach(header => {
-      rawHeadersArr.push(header.key, header.value);
-    });
-    return rawHeadersArr;
-  }
-
   get httpVersion () {
     return `${this.httpVersionMajor}.${this.httpVersionMinor}`;
   }

lib/browser/api/web-contents.ts

@@ -1,4 +1,4 @@
-import { app, ipcMain, session, webFrameMain, deprecate } from 'electron/main';
+import { app, ipcMain, session, deprecate, webFrameMain } from 'electron/main';
 import type { BrowserWindowConstructorOptions, LoadURLOptions } from 'electron/main';
 
 import * as url from 'url';
@@ -560,10 +560,6 @@ const loggingEnabled = () => {
 
 // Add JavaScript wrappers for WebContents class.
 WebContents.prototype._init = function () {
-  const prefs = this.getLastWebPreferences() || {};
-  if (!prefs.nodeIntegration && (prefs.preload != null || prefs.preloadURL != null) && prefs.sandbox == null) {
-    deprecate.log('The default sandbox option for windows without nodeIntegration is changing. Presently, by default, when a window has a preload script, it defaults to being unsandboxed. In Electron 20, this default will be changing, and all windows that have nodeIntegration: false (which is the default) will be sandboxed by default. If your preload script doesn\'t use Node, no action is needed. If your preload script does use Node, either refactor it to move Node usage to the main process, or specify sandbox: false in your WebPreferences.');
-  }
   // Read off the ID at construction time, so that it's accessible even after
   // the underlying C++ WebContents is destroyed.
   const id = this.id;
@@ -617,6 +613,7 @@ WebContents.prototype._init = function () {
   });
 
   this.on('-ipc-ports' as any, function (event: Electron.IpcMainEvent, internal: boolean, channel: string, message: any, ports: any[]) {
+    addSenderFrameToEvent(event);
     event.ports = ports.map(p => new MessagePortMain(p));
     ipcMain.emit(channel, event, message);
   });
@@ -696,8 +693,8 @@ WebContents.prototype._init = function () {
         // TODO(zcbenz): The features string is parsed twice: here where it is
         // passed to C++, and in |makeBrowserWindowOptions| later where it is
         // not actually used since the WebContents is created here.
-        // We should be able to remove the latter once the |new-window| event
-        // is removed.
+        // We should be able to remove the latter once the |nativeWindowOpen|
+        // option is removed.
         const { webPreferences: parsedWebPreferences } = parseFeatures(rawFeatures);
         // Parameters should keep same with |makeBrowserWindowOptions|.
         const webPreferences = makeWebPreferences({
@@ -709,7 +706,8 @@ WebContents.prototype._init = function () {
       }
     });
 
-    // Create a new browser window for "window.open"
+    // Create a new browser window for the native implementation of
+    // "window.open", used in sandbox and nativeWindowOpen mode.
     this.on('-add-new-contents' as any, (event: ElectronInternal.Event, webContents: Electron.WebContents, disposition: string,
       _userGesture: boolean, _left: number, _top: number, _width: number, _height: number, url: string, frameName: string,
       referrer: Electron.Referrer, rawFeatures: string, postData: PostData) => {
@@ -737,6 +735,11 @@ WebContents.prototype._init = function () {
         }
       });
     });
+
+    const prefs = this.getLastWebPreferences() || {};
+    if (prefs.nativeWindowOpen === false) {
+      deprecate.log('Deprecation Warning: Disabling nativeWindowOpen is deprecated. The nativeWindowOpen option will be removed in Electron 18.');
+    }
   }
 
   this.on('login', (event, ...args) => {

lib/browser/default-menu.ts

@@ -31,7 +31,7 @@ export const setDefaultApplicationMenu = () => {
       {
         label: 'Community Discussions',
         click: async () => {
-          await shell.openExternal('https://discord.com/invite/APGC3k5yaH');
+          await shell.openExternal('https://discord.gg/electron');
         }
       },
       {

lib/browser/guest-view-manager.ts

@@ -56,6 +56,7 @@ function makeWebPreferences (embedder: Electron.WebContents, params: Record<stri
   const inheritedWebPreferences = new Map([
     ['contextIsolation', true],
     ['javascript', false],
+    ['nativeWindowOpen', true],
     ['nodeIntegration', false],
     ['sandbox', true],
     ['nodeIntegrationInSubFrames', false],

lib/browser/guest-window-manager.ts

@@ -1,13 +1,14 @@
 /**
  * Create and minimally track guest windows at the direction of the renderer
  * (via window.open). Here, "guest" roughly means "child" — it's not necessarily
- * emblematic of its process status; both in-process (same-origin) and
- * out-of-process (cross-origin) are created here. "Embedder" roughly means
- * "parent."
+ * emblematic of its process status; both in-process (same-origin
+ * nativeWindowOpen) and out-of-process (cross-origin nativeWindowOpen and
+ * BrowserWindowProxy) are created here. "Embedder" roughly means "parent."
  */
 import { BrowserWindow } from 'electron/main';
 import type { BrowserWindowConstructorOptions, Referrer, WebContents, LoadURLOptions } from 'electron/main';
 import { parseFeatures } from '@electron/internal/browser/parse-features-string';
+import { IPC_MESSAGES } from '@electron/internal/common/ipc-messages';
 
 type PostData = LoadURLOptions['postData']
 export type WindowOpenArgs = {
@@ -22,12 +23,13 @@ const unregisterFrameName = (name: string) => frameNamesToWindow.delete(name);
 const getGuestWindowByFrameName = (name: string) => frameNamesToWindow.get(name);
 
 /**
- * `openGuestWindow` is called to create and setup event handling for the new
- * window.
+ * `openGuestWindow` is called for both implementations of window.open
+ * (BrowserWindowProxy and nativeWindowOpen) to create and setup event handling
+ * for the new window.
  *
  * Until its removal in 12.0.0, the `new-window` event is fired, allowing the
  * user to preventDefault() on the passed event (which ends up calling
- * DestroyWebContents).
+ * DestroyWebContents in the nativeWindowOpen code path).
  */
 export function openGuestWindow ({ event, embedder, guest, referrer, disposition, postData, overrideBrowserWindowOptions, windowOpenArgs }: {
   event: { sender: WebContents, defaultPrevented: boolean },
@@ -76,6 +78,22 @@ export function openGuestWindow ({ event, embedder, guest, referrer, disposition
     webContents: guest,
     ...browserWindowOptions
   });
+  if (!guest) {
+    // We should only call `loadURL` if the webContents was constructed by us in
+    // the case of BrowserWindowProxy (non-sandboxed, nativeWindowOpen: false),
+    // as navigating to the url when creating the window from an existing
+    // webContents is not necessary (it will navigate there anyway).
+    // This can also happen if we enter this function from OpenURLFromTab, in
+    // which case the browser process is responsible for initiating navigation
+    // in the new window.
+    window.loadURL(url, {
+      httpReferrer: referrer,
+      ...(postData && {
+        postData,
+        extraHeaders: formatPostDataHeaders(postData as Electron.UploadRawData[])
+      })
+    });
+  }
 
   handleWindowLifecycleEvents({ embedder, frameName, guest: window });
 
@@ -100,7 +118,9 @@ const handleWindowLifecycleEvents = function ({ embedder, guest, frameName }: {
     guest.destroy();
   };
 
+  const cachedGuestId = guest.webContents.id;
   const closedByUser = function () {
+    embedder._sendInternal(`${IPC_MESSAGES.GUEST_WINDOW_MANAGER_WINDOW_CLOSED}_${cachedGuestId}`);
     embedder.removeListener('current-render-view-deleted' as any, closedByEmbedder);
   };
   embedder.once('current-render-view-deleted' as any, closedByEmbedder);
@@ -175,6 +195,7 @@ function emitDeprecatedNewWindowEvent ({ event, embedder, guest, windowOpenArgs,
 const securityWebPreferences: { [key: string]: boolean } = {
   contextIsolation: true,
   javascript: false,
+  nativeWindowOpen: true,
   nodeIntegration: false,
   sandbox: true,
   webviewTag: false,
@@ -196,10 +217,10 @@ function makeBrowserWindowOptions ({ embedder, features, overrideOptions }: {
       height: 600,
       ...parsedOptions,
       ...overrideOptions,
-      // Note that for normal code path an existing WebContents created by
-      // Chromium will be used, with web preferences parsed in the
-      // |-will-add-new-contents| event.
-      // The |webPreferences| here is only used by the |new-window| event.
+      // Note that for |nativeWindowOpen: true| the WebContents is created in
+      // |api::WebContents::WebContentsCreatedWithFullParams|, with prefs
+      // parsed in the |-will-add-new-contents| event.
+      // The |webPreferences| here is only used by |nativeWindowOpen: false|.
       webPreferences: makeWebPreferences({
         embedder,
         insecureParsedWebPreferences: parsedWebPreferences,
@@ -224,6 +245,7 @@ export function makeWebPreferences ({ embedder, secureOverrideWebPreferences = {
     }
     return map;
   }, {} as Electron.WebPreferences));
+  const openerId = parentWebPreferences.nativeWindowOpen ? null : embedder.id;
 
   return {
     ...parsedWebPreferences,
@@ -231,10 +253,22 @@ export function makeWebPreferences ({ embedder, secureOverrideWebPreferences = {
     // ability to change important security options but allow main (via
     // setWindowOpenHandler) to change them.
     ...securityWebPreferencesFromParent,
-    ...secureOverrideWebPreferences
+    ...secureOverrideWebPreferences,
+    // Sets correct openerId here to give correct options to 'new-window' event handler
+    // TODO: Figure out another way to pass this?
+    openerId
   };
 }
 
+function formatPostDataHeaders (postData: PostData) {
+  if (!postData) return;
+
+  const { contentType, boundary } = parseContentTypeFormat(postData);
+  if (boundary != null) { return `content-type: ${contentType}; boundary=${boundary}`; }
+
+  return `content-type: ${contentType}`;
+}
+
 const MULTIPART_CONTENT_TYPE = 'multipart/form-data';
 const URL_ENCODED_CONTENT_TYPE = 'application/x-www-form-urlencoded';
 

lib/browser/guest-window-proxy.ts

@@ -0,0 +1,213 @@
+/**
+ * Manage guest windows when using the default BrowserWindowProxy version of the
+ * renderer's window.open (i.e. nativeWindowOpen off). This module mostly
+ * consists of marshaling IPC requests from the BrowserWindowProxy to the
+ * WebContents.
+ */
+import { webContents, BrowserWindow } from 'electron/main';
+import type { WebContents } from 'electron/main';
+import { ipcMainInternal } from '@electron/internal/browser/ipc-main-internal';
+import * as ipcMainUtils from '@electron/internal/browser/ipc-main-internal-utils';
+import { openGuestWindow } from '@electron/internal/browser/guest-window-manager';
+import { IPC_MESSAGES } from '@electron/internal/common/ipc-messages';
+
+const { isSameOrigin } = process._linkedBinding('electron_common_v8_util');
+
+const getGuestWindow = function (guestContents: WebContents) {
+  let guestWindow = BrowserWindow.fromWebContents(guestContents);
+  if (guestWindow == null) {
+    const hostContents = guestContents.hostWebContents;
+    if (hostContents != null) {
+      guestWindow = BrowserWindow.fromWebContents(hostContents);
+    }
+  }
+  if (!guestWindow) {
+    throw new Error('getGuestWindow failed');
+  }
+  return guestWindow;
+};
+
+const isChildWindow = function (sender: WebContents, target: WebContents) {
+  return target.getLastWebPreferences()!.openerId === sender.id;
+};
+
+const isRelatedWindow = function (sender: WebContents, target: WebContents) {
+  return isChildWindow(sender, target) || isChildWindow(target, sender);
+};
+
+const isScriptableWindow = function (sender: WebContents, target: WebContents) {
+  return (
+    isRelatedWindow(sender, target) &&
+    isSameOrigin(sender.getURL(), target.getURL())
+  );
+};
+
+const isNodeIntegrationEnabled = function (sender: WebContents) {
+  return sender.getLastWebPreferences()!.nodeIntegration === true;
+};
+
+// Checks whether |sender| can access the |target|:
+const canAccessWindow = function (sender: WebContents, target: WebContents) {
+  return (
+    isChildWindow(sender, target) ||
+    isScriptableWindow(sender, target) ||
+    isNodeIntegrationEnabled(sender)
+  );
+};
+
+// Routed window.open messages with raw options
+ipcMainInternal.on(
+  IPC_MESSAGES.GUEST_WINDOW_MANAGER_WINDOW_OPEN,
+  (
+    event,
+    url: string,
+    frameName: string,
+    features: string
+  ) => {
+    // This should only be allowed for senders that have nativeWindowOpen: false
+    const lastWebPreferences = event.sender.getLastWebPreferences()!;
+    if (lastWebPreferences.nativeWindowOpen || lastWebPreferences.sandbox) {
+      event.returnValue = null;
+      throw new Error(
+        'GUEST_WINDOW_MANAGER_WINDOW_OPEN denied: expected native window.open'
+      );
+    }
+
+    const referrer: Electron.Referrer = { url: '', policy: 'strict-origin-when-cross-origin' };
+    const browserWindowOptions = event.sender._callWindowOpenHandler(event, { url, frameName, features, disposition: 'new-window', referrer });
+    if (event.defaultPrevented) {
+      event.returnValue = null;
+      return;
+    }
+    const guest = openGuestWindow({
+      event,
+      embedder: event.sender,
+      referrer,
+      disposition: 'new-window',
+      overrideBrowserWindowOptions: browserWindowOptions!,
+      windowOpenArgs: {
+        url: url || 'about:blank',
+        frameName: frameName || '',
+        features: features || ''
+      }
+    });
+
+    event.returnValue = guest ? guest.webContents.id : null;
+  }
+);
+
+type IpcHandler<T, Event> = (event: Event, guestContents: Electron.WebContents, ...args: any[]) => T;
+const makeSafeHandler = function<T, Event> (handler: IpcHandler<T, Event>) {
+  return (event: Event, guestId: number, ...args: any[]) => {
+    // Access webContents via electron to prevent circular require.
+    const guestContents = webContents.fromId(guestId);
+    if (!guestContents) {
+      throw new Error(`Invalid guestId: ${guestId}`);
+    }
+
+    return handler(event, guestContents as Electron.WebContents, ...args);
+  };
+};
+
+const handleMessage = function (channel: string, handler: IpcHandler<any, Electron.IpcMainInvokeEvent>) {
+  ipcMainInternal.handle(channel, makeSafeHandler(handler));
+};
+
+const handleMessageSync = function (channel: string, handler: IpcHandler<any, ElectronInternal.IpcMainInternalEvent>) {
+  ipcMainUtils.handleSync(channel, makeSafeHandler(handler));
+};
+
+type ContentsCheck = (contents: WebContents, guestContents: WebContents) => boolean;
+const securityCheck = function (contents: WebContents, guestContents: WebContents, check: ContentsCheck) {
+  if (!check(contents, guestContents)) {
+    console.error(
+      `Blocked ${contents.getURL()} from accessing guestId: ${guestContents.id}`
+    );
+    throw new Error(`Access denied to guestId: ${guestContents.id}`);
+  }
+};
+
+const windowMethods = new Set(['destroy', 'focus', 'blur']);
+
+handleMessage(
+  IPC_MESSAGES.GUEST_WINDOW_MANAGER_WINDOW_METHOD,
+  (event, guestContents, method, ...args) => {
+    securityCheck(event.sender, guestContents, canAccessWindow);
+
+    if (!windowMethods.has(method)) {
+      console.error(
+        `Blocked ${event.senderFrame.url} from calling method: ${method}`
+      );
+      throw new Error(`Invalid method: ${method}`);
+    }
+
+    return (getGuestWindow(guestContents) as any)[method](...args);
+  }
+);
+
+handleMessage(
+  IPC_MESSAGES.GUEST_WINDOW_MANAGER_WINDOW_POSTMESSAGE,
+  (event, guestContents, message, targetOrigin, sourceOrigin) => {
+    if (targetOrigin == null) {
+      targetOrigin = '*';
+    }
+
+    // The W3C does not seem to have word on how postMessage should work when the
+    // origins do not match, so we do not do |canAccessWindow| check here since
+    // postMessage across origins is useful and not harmful.
+    securityCheck(event.sender, guestContents, isRelatedWindow);
+
+    if (
+      targetOrigin === '*' ||
+      isSameOrigin(guestContents.getURL(), targetOrigin)
+    ) {
+      const sourceId = event.sender.id;
+      guestContents._sendInternal(
+        IPC_MESSAGES.GUEST_WINDOW_POSTMESSAGE,
+        sourceId,
+        message,
+        sourceOrigin
+      );
+    }
+  }
+);
+
+const webContentsMethodsAsync = new Set([
+  'loadURL',
+  'executeJavaScript',
+  'print'
+]);
+
+handleMessage(
+  IPC_MESSAGES.GUEST_WINDOW_MANAGER_WEB_CONTENTS_METHOD,
+  (event, guestContents, method, ...args) => {
+    securityCheck(event.sender, guestContents, canAccessWindow);
+
+    if (!webContentsMethodsAsync.has(method)) {
+      console.error(
+        `Blocked ${event.sender.getURL()} from calling method: ${method}`
+      );
+      throw new Error(`Invalid method: ${method}`);
+    }
+
+    return (guestContents as any)[method](...args);
+  }
+);
+
+const webContentsMethodsSync = new Set(['getURL']);
+
+handleMessageSync(
+  IPC_MESSAGES.GUEST_WINDOW_MANAGER_WEB_CONTENTS_METHOD,
+  (event, guestContents, method, ...args) => {
+    securityCheck(event.sender, guestContents, canAccessWindow);
+
+    if (!webContentsMethodsSync.has(method)) {
+      console.error(
+        `Blocked ${event.sender.getURL()} from calling method: ${method}`
+      );
+      throw new Error(`Invalid method: ${method}`);
+    }
+
+    return (guestContents as any)[method](...args);
+  }
+);

lib/browser/init.ts

@@ -78,6 +78,7 @@ require('@electron/internal/browser/rpc-server');
 
 // Load the guest view manager.
 require('@electron/internal/browser/guest-view-manager');
+require('@electron/internal/browser/guest-window-proxy');
 
 // Now we try to load app's package.json.
 const v8Util = process._linkedBinding('electron_common_v8_util');

lib/browser/ipc-main-impl.ts

@@ -15,7 +15,7 @@ export class IpcMainImpl extends EventEmitter {
       try {
         e._reply(await Promise.resolve(fn(e, ...args)));
       } catch (err) {
-        e._throw(err as Error);
+        e._throw(err);
       }
     });
   }

lib/common/ipc-messages.ts

@@ -18,6 +18,13 @@ export const enum IPC_MESSAGES {
   GUEST_VIEW_MANAGER_PROPERTY_GET = 'GUEST_VIEW_MANAGER_PROPERTY_GET',
   GUEST_VIEW_MANAGER_PROPERTY_SET = 'GUEST_VIEW_MANAGER_PROPERTY_SET',
 
+  GUEST_WINDOW_MANAGER_WINDOW_OPEN = 'GUEST_WINDOW_MANAGER_WINDOW_OPEN',
+  GUEST_WINDOW_MANAGER_WINDOW_CLOSED = 'GUEST_WINDOW_MANAGER_WINDOW_CLOSED',
+  GUEST_WINDOW_MANAGER_WINDOW_POSTMESSAGE = 'GUEST_WINDOW_MANAGER_WINDOW_POSTMESSAGE',
+  GUEST_WINDOW_MANAGER_WINDOW_METHOD = 'GUEST_WINDOW_MANAGER_WINDOW_METHOD',
+  GUEST_WINDOW_MANAGER_WEB_CONTENTS_METHOD = 'GUEST_WINDOW_MANAGER_WEB_CONTENTS_METHOD',
+  GUEST_WINDOW_POSTMESSAGE = 'GUEST_WINDOW_POSTMESSAGE',
+
   RENDERER_WEB_FRAME_METHOD = 'RENDERER_WEB_FRAME_METHOD',
 
   INSPECTOR_CONFIRM = 'INSPECTOR_CONFIRM',

lib/renderer/common-init.ts

@@ -12,7 +12,9 @@ const v8Util = process._linkedBinding('electron_common_v8_util');
 const nodeIntegration = mainFrame.getWebPreference('nodeIntegration');
 const webviewTag = mainFrame.getWebPreference('webviewTag');
 const isHiddenPage = mainFrame.getWebPreference('hiddenPage');
+const nativeWindowOpen = mainFrame.getWebPreference('nativeWindowOpen') || process.sandboxed;
 const isWebView = mainFrame.getWebPreference('isWebView');
+const openerId = mainFrame.getWebPreference('openerId');
 
 // ElectronApiServiceImpl will look for the "ipcNative" hidden object when
 // invoking the 'onMessage' callback.
@@ -42,7 +44,7 @@ switch (window.location.protocol) {
   default: {
     // Override default web functions.
     const { windowSetup } = require('@electron/internal/renderer/window-setup') as typeof windowSetupModule;
-    windowSetup(isWebView, isHiddenPage);
+    windowSetup(isWebView, openerId, isHiddenPage, nativeWindowOpen);
   }
 }
 

lib/renderer/window-setup.ts

@@ -1,10 +1,249 @@
 import { ipcRendererInternal } from '@electron/internal/renderer/ipc-renderer-internal';
+import * as ipcRendererUtils from '@electron/internal/renderer/ipc-renderer-internal-utils';
 import { internalContextBridge } from '@electron/internal/renderer/api/context-bridge';
 import { IPC_MESSAGES } from '@electron/internal/common/ipc-messages';
 
 const { contextIsolationEnabled } = internalContextBridge;
 
-export const windowSetup = (isWebView: boolean, isHiddenPage: boolean) => {
+// This file implements the following APIs over the ctx bridge:
+// - window.open()
+// - window.opener.blur()
+// - window.opener.close()
+// - window.opener.eval()
+// - window.opener.focus()
+// - window.opener.location
+// - window.opener.print()
+// - window.opener.closed
+// - window.opener.postMessage()
+// - window.history.back()
+// - window.history.forward()
+// - window.history.go()
+// - window.history.length
+// - window.prompt()
+// - document.hidden
+// - document.visibilityState
+
+// Helper function to resolve relative url.
+const resolveURL = (url: string, base: string) => new URL(url, base).href;
+
+// Use this method to ensure values expected as strings in the main process
+// are convertible to strings in the renderer process. This ensures exceptions
+// converting values to strings are thrown in this process.
+const toString = (value: any) => {
+  return value != null ? `${value}` : value;
+};
+
+const windowProxies = new Map<number, BrowserWindowProxy>();
+
+const getOrCreateProxy = (guestId: number): SafelyBoundBrowserWindowProxy => {
+  let proxy = windowProxies.get(guestId);
+  if (proxy == null) {
+    proxy = new BrowserWindowProxy(guestId);
+    windowProxies.set(guestId, proxy);
+  }
+  return proxy.getSafe();
+};
+
+const removeProxy = (guestId: number) => {
+  windowProxies.delete(guestId);
+};
+
+type LocationProperties = 'hash' | 'href' | 'host' | 'hostname' | 'origin' | 'pathname' | 'port' | 'protocol' | 'search'
+
+class LocationProxy {
+  @LocationProxy.ProxyProperty public hash!: string;
+  @LocationProxy.ProxyProperty public href!: string;
+  @LocationProxy.ProxyProperty public host!: string;
+  @LocationProxy.ProxyProperty public hostname!: string;
+  @LocationProxy.ProxyProperty public origin!: string;
+  @LocationProxy.ProxyProperty public pathname!: string;
+  @LocationProxy.ProxyProperty public port!: string;
+  @LocationProxy.ProxyProperty public protocol!: string;
+  @LocationProxy.ProxyProperty public search!: URLSearchParams;
+
+  private guestId: number;
+
+  /**
+   * Beware: This decorator will have the _prototype_ as the `target`. It defines properties
+   * commonly found in URL on the LocationProxy.
+   */
+  private static ProxyProperty<T> (target: LocationProxy, propertyKey: LocationProperties) {
+    Object.defineProperty(target, propertyKey, {
+      enumerable: true,
+      configurable: true,
+      get: function (this: LocationProxy): T | string {
+        const guestURL = this.getGuestURL();
+        const value = guestURL ? guestURL[propertyKey] : '';
+        return value === undefined ? '' : value;
+      },
+      set: function (this: LocationProxy, newVal: T) {
+        const guestURL = this.getGuestURL();
+        if (guestURL) {
+          // TypeScript doesn't want us to assign to read-only variables.
+          // It's right, that's bad, but we're doing it anyway.
+          (guestURL as any)[propertyKey] = newVal;
+
+          return this._invokeWebContentsMethod('loadURL', guestURL.toString());
+        }
+      }
+    });
+  }
+
+  public getSafe = () => {
+    const that = this;
+    return {
+      get href () { return that.href; },
+      set href (newValue) { that.href = newValue; },
+      get hash () { return that.hash; },
+      set hash (newValue) { that.hash = newValue; },
+      get host () { return that.host; },
+      set host (newValue) { that.host = newValue; },
+      get hostname () { return that.hostname; },
+      set hostname (newValue) { that.hostname = newValue; },
+      get origin () { return that.origin; },
+      set origin (newValue) { that.origin = newValue; },
+      get pathname () { return that.pathname; },
+      set pathname (newValue) { that.pathname = newValue; },
+      get port () { return that.port; },
+      set port (newValue) { that.port = newValue; },
+      get protocol () { return that.protocol; },
+      set protocol (newValue) { that.protocol = newValue; },
+      get search () { return that.search; },
+      set search (newValue) { that.search = newValue; }
+    };
+  }
+
+  constructor (guestId: number) {
+    // eslint will consider the constructor "useless"
+    // unless we assign them in the body. It's fine, that's what
+    // TS would do anyway.
+    this.guestId = guestId;
+    this.getGuestURL = this.getGuestURL.bind(this);
+  }
+
+  public toString (): string {
+    return this.href;
+  }
+
+  private getGuestURL (): URL | null {
+    const maybeURL = this._invokeWebContentsMethodSync('getURL') as string;
+
+    // When there's no previous frame the url will be blank, so account for that here
+    // to prevent url parsing errors on an empty string.
+    const urlString = maybeURL !== '' ? maybeURL : 'about:blank';
+    try {
+      return new URL(urlString);
+    } catch (e) {
+      console.error('LocationProxy: failed to parse string', urlString, e);
+    }
+
+    return null;
+  }
+
+  private _invokeWebContentsMethod (method: string, ...args: any[]) {
+    return ipcRendererInternal.invoke(IPC_MESSAGES.GUEST_WINDOW_MANAGER_WEB_CONTENTS_METHOD, this.guestId, method, ...args);
+  }
+
+  private _invokeWebContentsMethodSync (method: string, ...args: any[]) {
+    return ipcRendererUtils.invokeSync(IPC_MESSAGES.GUEST_WINDOW_MANAGER_WEB_CONTENTS_METHOD, this.guestId, method, ...args);
+  }
+}
+
+interface SafelyBoundBrowserWindowProxy {
+  location: WindowProxy['location'];
+  blur: WindowProxy['blur'];
+  close: WindowProxy['close'];
+  eval: typeof eval; // eslint-disable-line no-eval
+  focus: WindowProxy['focus'];
+  print: WindowProxy['print'];
+  postMessage: WindowProxy['postMessage'];
+  closed: boolean;
+}
+
+class BrowserWindowProxy {
+  public closed: boolean = false
+
+  private _location: LocationProxy
+  private guestId: number
+
+  // TypeScript doesn't allow getters/accessors with different types,
+  // so for now, we'll have to make do with an "any" in the mix.
+  // https://github.com/Microsoft/TypeScript/issues/2521
+  public get location (): LocationProxy | any {
+    return this._location.getSafe();
+  }
+
+  public set location (url: string | any) {
+    url = resolveURL(url, this.location.href);
+    this._invokeWebContentsMethod('loadURL', url);
+  }
+
+  constructor (guestId: number) {
+    this.guestId = guestId;
+    this._location = new LocationProxy(guestId);
+
+    ipcRendererInternal.once(`${IPC_MESSAGES.GUEST_WINDOW_MANAGER_WINDOW_CLOSED}_${guestId}`, () => {
+      removeProxy(guestId);
+      this.closed = true;
+    });
+  }
+
+  public getSafe = (): SafelyBoundBrowserWindowProxy => {
+    const that = this;
+    return {
+      postMessage: this.postMessage,
+      blur: this.blur,
+      close: this.close,
+      focus: this.focus,
+      print: this.print,
+      eval: this.eval,
+      get location () {
+        return that.location;
+      },
+      set location (url: string | any) {
+        that.location = url;
+      },
+      get closed () {
+        return that.closed;
+      }
+    };
+  }
+
+  public close = () => {
+    this._invokeWindowMethod('destroy');
+  }
+
+  public focus = () => {
+    this._invokeWindowMethod('focus');
+  }
+
+  public blur = () => {
+    this._invokeWindowMethod('blur');
+  }
+
+  public print = () => {
+    this._invokeWebContentsMethod('print');
+  }
+
+  public postMessage = (message: any, targetOrigin: string) => {
+    ipcRendererInternal.invoke(IPC_MESSAGES.GUEST_WINDOW_MANAGER_WINDOW_POSTMESSAGE, this.guestId, message, toString(targetOrigin), window.location.origin);
+  }
+
+  public eval = (code: string) => {
+    this._invokeWebContentsMethod('executeJavaScript', code);
+  }
+
+  private _invokeWindowMethod (method: string, ...args: any[]) {
+    return ipcRendererInternal.invoke(IPC_MESSAGES.GUEST_WINDOW_MANAGER_WINDOW_METHOD, this.guestId, method, ...args);
+  }
+
+  private _invokeWebContentsMethod (method: string, ...args: any[]) {
+    return ipcRendererInternal.invoke(IPC_MESSAGES.GUEST_WINDOW_MANAGER_WEB_CONTENTS_METHOD, this.guestId, method, ...args);
+  }
+}
+
+export const windowSetup = (
+  isWebView: boolean, openerId: number, isHiddenPage: boolean, usesNativeWindowOpen: boolean) => {
   if (!process.sandboxed && !isWebView) {
     // Override default window.close.
     window.close = function () {
@@ -13,12 +252,72 @@ export const windowSetup = (isWebView: boolean, isHiddenPage: boolean) => {
     if (contextIsolationEnabled) internalContextBridge.overrideGlobalValueFromIsolatedWorld(['close'], window.close);
   }
 
+  if (!usesNativeWindowOpen) {
+    // TODO(MarshallOfSound): Make compatible with ctx isolation without hole-punch
+    // Make the browser window or guest view emit "new-window" event.
+    window.open = function (url?: string, frameName?: string, features?: string) {
+      if (url != null && url !== '') {
+        url = resolveURL(url, location.href);
+      }
+      const guestId = ipcRendererInternal.sendSync(IPC_MESSAGES.GUEST_WINDOW_MANAGER_WINDOW_OPEN, url, toString(frameName), toString(features));
+      if (guestId != null) {
+        return getOrCreateProxy(guestId) as any as WindowProxy;
+      } else {
+        return null;
+      }
+    };
+    if (contextIsolationEnabled) internalContextBridge.overrideGlobalValueWithDynamicPropsFromIsolatedWorld(['open'], window.open);
+  }
+
+  // If this window uses nativeWindowOpen, but its opener window does not, we
+  // need to proxy window.opener in order to let the page communicate with its
+  // opener.
+  // Additionally, windows opened from a nativeWindowOpen child of a
+  // non-nativeWindowOpen parent will initially have their WebPreferences
+  // copied from their opener before having them updated, meaning openerId is
+  // initially incorrect. We detect this situation by checking for
+  // window.opener, which will be non-null for a natively-opened child, so we
+  // can ignore the openerId in that case, since it's incorrectly copied from
+  // the parent. This is, uh, confusing, so here's a diagram that will maybe
+  // help?
+  //
+  // [ grandparent window ] --> [ parent window ] --> [ child window ]
+  //     n.W.O = false             n.W.O = true         n.W.O = true
+  //        id = 1                    id = 2               id = 3
+  //  openerId = 0              openerId = 1         openerId = 1  <- !!wrong!!
+  //    opener = null             opener = null        opener = [parent window]
+  if (openerId && !window.opener) {
+    window.opener = getOrCreateProxy(openerId);
+    if (contextIsolationEnabled) internalContextBridge.overrideGlobalValueWithDynamicPropsFromIsolatedWorld(['opener'], window.opener);
+  }
+
   // But we do not support prompt().
   window.prompt = function () {
     throw new Error('prompt() is and will not be supported.');
   };
   if (contextIsolationEnabled) internalContextBridge.overrideGlobalValueFromIsolatedWorld(['prompt'], window.prompt);
 
+  if (!usesNativeWindowOpen || openerId) {
+    ipcRendererInternal.on(IPC_MESSAGES.GUEST_WINDOW_POSTMESSAGE, function (
+      _event, sourceId: number, message: any, sourceOrigin: string
+    ) {
+      // Manually dispatch event instead of using postMessage because we also need to
+      // set event.source.
+      //
+      // Why any? We can't construct a MessageEvent and we can't
+      // use `as MessageEvent` because you're not supposed to override
+      // data, origin, and source
+      const event: any = document.createEvent('Event');
+      event.initEvent('message', false, false);
+
+      event.data = message;
+      event.origin = sourceOrigin;
+      event.source = getOrCreateProxy(sourceId);
+
+      window.dispatchEvent(event as MessageEvent);
+    });
+  }
+
   if (isWebView) {
     // Webview `document.visibilityState` tracks window visibility (and ignores
     // the actual <webview> element visibility) for backwards compatibility.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "electron",
-  "version": "18.0.0-beta.4",
+  "version": "17.4.1",
   "repository": "https://github.com/electron/electron",
   "description": "Build cross platform desktop apps with JavaScript, HTML, and CSS",
   "devDependencies": {
@@ -31,7 +31,7 @@
     "@typescript-eslint/eslint-plugin": "^4.4.1",
     "@typescript-eslint/parser": "^4.4.1",
     "asar": "^3.1.0",
-    "aws-sdk": "^2.814.0",
+    "aws-sdk": "^2.727.1",
     "check-for-leaks": "^1.2.1",
     "colors": "1.4.0",
     "dotenv-safe": "^4.0.4",
@@ -67,7 +67,7 @@
     "timers-browserify": "1.4.2",
     "ts-loader": "^8.0.2",
     "ts-node": "6.2.0",
-    "typescript": "^4.5.5",
+    "typescript": "^4.1.3",
     "webpack": "^4.43.0",
     "webpack-cli": "^3.3.12",
     "wrapper-webpack-plugin": "^2.1.0"
@@ -78,14 +78,14 @@
     "generate-version-json": "node script/generate-version-json.js",
     "lint": "node ./script/lint.js && npm run lint:clang-format && npm run lint:docs",
     "lint:js": "node ./script/lint.js --js",
-    "lint:clang-format": "python script/run-clang-format.py -r -c shell/ || (echo \"\\nCode not formatted correctly.\" && exit 1)",
+    "lint:clang-format": "python3 script/run-clang-format.py -r -c shell/ || (echo \"\\nCode not formatted correctly.\" && exit 1)",
     "lint:clang-tidy": "ts-node ./script/run-clang-tidy.ts",
     "lint:cpp": "node ./script/lint.js --cc",
     "lint:objc": "node ./script/lint.js --objc",
     "lint:py": "node ./script/lint.js --py",
     "lint:gn": "node ./script/lint.js --gn",
     "lint:docs": "remark docs -qf && npm run lint:js-in-markdown && npm run create-typescript-definitions && npm run lint:docs-relative-links && npm run lint:markdownlint",
-    "lint:docs-relative-links": "python ./script/check-relative-doc-links.py",
+    "lint:docs-relative-links": "python3 ./script/check-relative-doc-links.py",
     "lint:markdownlint": "markdownlint \"*.md\" \"docs/**/*.md\"",
     "lint:js-in-markdown": "standard-markdown docs",
     "create-api-json": "electron-docs-parser --dir=./",
@@ -116,14 +116,14 @@
       "ts-node script/gen-filenames.ts"
     ],
     "*.{cc,mm,c,h}": [
-      "python script/run-clang-format.py -r -c --fix"
+      "python3 script/run-clang-format.py -r -c --fix"
     ],
     "*.md": [
       "npm run lint:docs"
     ],
     "*.{gn,gni}": [
       "npm run gn-check",
-      "python script/run-gn-format.py"
+      "python3 script/run-gn-format.py"
     ],
     "*.py": [
       "node script/lint.js --py --fix --only --"

patches/boringssl/expose_ripemd160.patch

@@ -82,7 +82,7 @@ index a3fb077b9b9e66d1bc524fd7987622e73aa4776a..852b76bea69988e0b3ac76a17b603128
  
  void EVP_MD_do_all(void (*callback)(const EVP_MD *cipher, const char *name,
 diff --git a/include/openssl/digest.h b/include/openssl/digest.h
-index 6e889993edc1caa7e10670529dd270c337b5ae4c..f61f7e5009a9b4f5630cda2c3a5a21b44e5b88d8 100644
+index fa7616896b6cc7422dc0171db29316f20fb25de8..6c19a0f0d454bef1abf16ebfeef380a53fb21e5c 100644
 --- a/include/openssl/digest.h
 +++ b/include/openssl/digest.h
 @@ -90,6 +90,9 @@ OPENSSL_EXPORT const EVP_MD *EVP_blake2b256(void);

patches/chromium/.patches

@@ -48,6 +48,7 @@ worker_context_will_destroy.patch
 frame_host_manager.patch
 crashpad_pid_check.patch
 network_service_allow_remote_certificate_verification_logic.patch
+put_back_deleted_colors_for_autofill.patch
 disable_color_correct_rendering.patch
 add_contentgpuclient_precreatemessageloop_callback.patch
 picture-in-picture.patch
@@ -66,7 +67,6 @@ feat_enable_offscreen_rendering_with_viz_compositor.patch
 gpu_notify_when_dxdiag_request_fails.patch
 feat_allow_embedders_to_add_observers_on_created_hunspell.patch
 feat_add_onclose_to_messageport.patch
-ui_gtk_public_header.patch
 allow_in-process_windows_to_have_different_web_prefs.patch
 refactor_expose_cursor_changes_to_the_webcontentsobserver.patch
 crash_allow_setting_more_options.patch
@@ -91,6 +91,7 @@ webview_fullscreen.patch
 disable_unload_metrics.patch
 fix_add_check_for_sandbox_then_result.patch
 extend_apply_webpreferences.patch
+make_include_of_stack_trace_h_unconditional.patch
 build_libc_as_static_library.patch
 build_do_not_depend_on_packed_resource_integrity.patch
 refactor_restore_base_adaptcallbackforrepeating.patch
@@ -103,15 +104,24 @@ chore_do_not_use_chrome_windows_in_cryptotoken_webrequestsender.patch
 process_singleton.patch
 fix_expose_decrementcapturercount_in_web_contents_impl.patch
 add_ui_scopedcliboardwriter_writeunsaferawdata.patch
+feat_add_data_parameter_to_processsingleton.patch
 mas_gate_private_enterprise_APIs.patch
 load_v8_snapshot_in_browser_process.patch
 fix_patch_out_permissions_checks_in_exclusive_access.patch
 fix_aspect_ratio_with_max_size.patch
 fix_dont_delete_SerialPortManager_on_main_thread.patch
-feat_add_data_transfer_to_requestsingleinstancelock.patch
 fix_crash_when_saving_edited_pdf_files.patch
-port_autofill_colors_to_the_color_pipeline.patch
+cherry-pick-f5101995acd2.patch
+fix_don_t_restore_maximized_windows_when_calling_showinactive.patch
 build_disable_partition_alloc_on_mac.patch
-build_disable_thin_lto_on_mac.patch
 fix_non-client_mouse_tracking_and_message_bubbling_on_windows.patch
 remove_incorrect_width_height_adjustments.patch
+set_dpi_correctly_during_main_window_creation.patch
+ui_gtk_public_header.patch
+introduce_ozoneplatform_electron_can_call_x11_property.patch
+revert_motionmark_avoid_unnecessary_ipc_on_mac.patch
+cherry-pick-a1dc371d6680.patch
+cherry-pick-1665a1d16d46.patch
+use-after-free_of_id_and_idref_attributes.patch
+fix_--without-valid_build.patch
+cherry-pick-4d26949260aa.patch

patches/chromium/accelerator.patch

@@ -10,7 +10,7 @@ This patch makes three changes to Accelerator::GetShortcutText to improve shortc
 3. Ctrl-Shift-= and Ctrl-Plus show up as such
 
 diff --git a/ui/base/accelerators/accelerator.cc b/ui/base/accelerators/accelerator.cc
-index 2468b2c5881821d6f8e24a0e7c42243427b384ad..7e44c97edabf5ae012ff4f84d1404d8f223a13fe 100644
+index be0df3662e3a1528fb88d5c723da49e5a29ac2b9..64a5eda05be16b3b6e1a0ceaa2b3a6884ca37268 100644
 --- a/ui/base/accelerators/accelerator.cc
 +++ b/ui/base/accelerators/accelerator.cc
 @@ -11,6 +11,7 @@
@@ -30,7 +30,7 @@ index 2468b2c5881821d6f8e24a0e7c42243427b384ad..7e44c97edabf5ae012ff4f84d1404d8f
 +    if (shifted_char) {
 +      shortcut += *shifted_char;
 +    } else {
- #if BUILDFLAG(IS_WIN)
+ #if defined(OS_WIN)
      // Our fallback is to try translate the key code to a regular character
      // unless it is one of digits (VK_0 to VK_9). Some keyboard
 @@ -261,6 +267,10 @@ std::u16string Accelerator::GetShortcutText() const {
@@ -43,7 +43,7 @@ index 2468b2c5881821d6f8e24a0e7c42243427b384ad..7e44c97edabf5ae012ff4f84d1404d8f
 +          base::StringPrintf("F%d", key_code_ - VKEY_F1 + 1));
    }
  
- #if BUILDFLAG(IS_MAC)
+ #if defined(OS_MAC)
 @@ -451,7 +461,7 @@ std::u16string Accelerator::ApplyLongFormModifiers(
      const std::u16string& shortcut) const {
    std::u16string result = shortcut;
@@ -63,7 +63,7 @@ index 2468b2c5881821d6f8e24a0e7c42243427b384ad..7e44c97edabf5ae012ff4f84d1404d8f
  
    if (IsCmdDown()) {
 diff --git a/ui/base/accelerators/accelerator.h b/ui/base/accelerators/accelerator.h
-index e0d9df439d120c0a47f55666b3818c7ba6796e70..283c6283f5aeaae1a5436e5fbb17ce2db4a9034e 100644
+index 5cdb2f160beae4d7787eb84d5013280ee9464446..76bd4369faa5d43d8a99ea51ed012857d6bff293 100644
 --- a/ui/base/accelerators/accelerator.h
 +++ b/ui/base/accelerators/accelerator.h
 @@ -16,6 +16,7 @@

patches/chromium/add_contentgpuclient_precreatemessageloop_callback.patch

@@ -10,10 +10,10 @@ Allows Electron to restore WER when ELECTRON_DEFAULT_ERROR_MODE is set.
 This should be upstreamed.
 
 diff --git a/content/gpu/gpu_main.cc b/content/gpu/gpu_main.cc
-index 9f840287967b50ec1db3a9d27973429ab231a486..731a279e395a8762a25a115665bff99be428de3d 100644
+index cdd437ad553493535015fd93d19aa29843e10c38..99b285b46c2193d0526fac8b706073213fa0846e 100644
 --- a/content/gpu/gpu_main.cc
 +++ b/content/gpu/gpu_main.cc
-@@ -239,6 +239,10 @@ int GpuMain(MainFunctionParams parameters) {
+@@ -237,6 +237,10 @@ int GpuMain(MainFunctionParams parameters) {
    // to the GpuProcessHost once the GpuServiceImpl has started.
    viz::GpuServiceImpl::InstallPreInitializeLogHandler();
  
@@ -24,7 +24,7 @@ index 9f840287967b50ec1db3a9d27973429ab231a486..731a279e395a8762a25a115665bff99b
    // We are experiencing what appear to be memory-stomp issues in the GPU
    // process. These issues seem to be impacting the task executor and listeners
    // registered to it. Create the task executor on the heap to guard against
-@@ -345,7 +349,6 @@ int GpuMain(MainFunctionParams parameters) {
+@@ -343,7 +347,6 @@ int GpuMain(MainFunctionParams parameters) {
    GpuProcess gpu_process(io_thread_priority);
  #endif
  

patches/chromium/add_didinstallconditionalfeatures.patch

@@ -10,7 +10,7 @@ DidCreateScriptContext is called, not all JS APIs are available in the
 context, which can cause some preload scripts to trip.
 
 diff --git a/content/public/renderer/render_frame_observer.h b/content/public/renderer/render_frame_observer.h
-index a92e09dc651a5f1a9bbae2572fad32233afcd46c..f99b652dda817b62615d2b3f00b4ae4b438ec44d 100644
+index f6d262f1bf7aa77c2a63f4a4c3351be0fe2ab3fd..52db2e1948fd7752b88d5a692748053491594c2d 100644
 --- a/content/public/renderer/render_frame_observer.h
 +++ b/content/public/renderer/render_frame_observer.h
 @@ -129,6 +129,8 @@ class CONTENT_EXPORT RenderFrameObserver : public IPC::Listener,
@@ -23,10 +23,10 @@ index a92e09dc651a5f1a9bbae2572fad32233afcd46c..f99b652dda817b62615d2b3f00b4ae4b
                                          int32_t world_id) {}
    virtual void DidClearWindowObject() {}
 diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
-index 4473c5e812a4a598f3e2f2bb06f78def5791af24..44c0ec9815aafd61182fd18a9d125e185d7196bc 100644
+index 584ae29be139c9be347e4fa9f920a2cc84baf00a..c7a5f0916cf8ba6db6fa85537c140024a92ff24d 100644
 --- a/content/renderer/render_frame_impl.cc
 +++ b/content/renderer/render_frame_impl.cc
-@@ -4455,6 +4455,12 @@ void RenderFrameImpl::DidCreateScriptContext(v8::Local<v8::Context> context,
+@@ -4515,6 +4515,12 @@ void RenderFrameImpl::DidCreateScriptContext(v8::Local<v8::Context> context,
      observer.DidCreateScriptContext(context, world_id);
  }
  
@@ -40,10 +40,10 @@ index 4473c5e812a4a598f3e2f2bb06f78def5791af24..44c0ec9815aafd61182fd18a9d125e18
                                                 int world_id) {
    for (auto& observer : observers_)
 diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
-index 21b90bbb8fe8ddc03eb20538be423a5396d18eb3..f9c735038f733d990783dd66ffe8c74f824c78f2 100644
+index 1b582c1736db20dab712ee7875f37c2140bd7d45..efab4f51e56e6e179fb832b1cf47d7f4a348e6c7 100644
 --- a/content/renderer/render_frame_impl.h
 +++ b/content/renderer/render_frame_impl.h
-@@ -597,6 +597,8 @@ class CONTENT_EXPORT RenderFrameImpl
+@@ -602,6 +602,8 @@ class CONTENT_EXPORT RenderFrameImpl
        blink::WebLocalFrameClient::LazyLoadBehavior lazy_load_behavior) override;
    void DidCreateScriptContext(v8::Local<v8::Context> context,
                                int world_id) override;
@@ -53,10 +53,10 @@ index 21b90bbb8fe8ddc03eb20538be423a5396d18eb3..f9c735038f733d990783dd66ffe8c74f
                                  int world_id) override;
    void DidChangeScrollOffset() override;
 diff --git a/third_party/blink/public/web/web_local_frame_client.h b/third_party/blink/public/web/web_local_frame_client.h
-index 3d6e0c0395ff7c92d8908c5151b467beec3a7516..2fadd6d9b2e3747eacea08973d8d3c7aa9c15f26 100644
+index 994841c02b0472e5239d9b73a07b2592a39df8be..ad19a3cddf200f6600a04c1136fd21218d496ba8 100644
 --- a/third_party/blink/public/web/web_local_frame_client.h
 +++ b/third_party/blink/public/web/web_local_frame_client.h
-@@ -599,6 +599,9 @@ class BLINK_EXPORT WebLocalFrameClient {
+@@ -596,6 +596,9 @@ class BLINK_EXPORT WebLocalFrameClient {
    virtual void DidCreateScriptContext(v8::Local<v8::Context>,
                                        int32_t world_id) {}
  
@@ -67,10 +67,10 @@ index 3d6e0c0395ff7c92d8908c5151b467beec3a7516..2fadd6d9b2e3747eacea08973d8d3c7a
    virtual void WillReleaseScriptContext(v8::Local<v8::Context>,
                                          int32_t world_id) {}
 diff --git a/third_party/blink/renderer/bindings/core/v8/local_window_proxy.cc b/third_party/blink/renderer/bindings/core/v8/local_window_proxy.cc
-index aa4b510137d60e6fb924f4f1a6554fe06c19ad75..816b6260020a6cbb6880b0eed197743ccd9002f5 100644
+index 29e255dc75a1d54211dc6059801d3c16b7cefdca..044195c7d77be5ff4abe9d2a71ddbbf2076b2efd 100644
 --- a/third_party/blink/renderer/bindings/core/v8/local_window_proxy.cc
 +++ b/third_party/blink/renderer/bindings/core/v8/local_window_proxy.cc
-@@ -205,6 +205,7 @@ void LocalWindowProxy::Initialize() {
+@@ -214,6 +214,7 @@ void LocalWindowProxy::Initialize() {
    }
  
    InstallConditionalFeatures();
@@ -79,10 +79,10 @@ index aa4b510137d60e6fb924f4f1a6554fe06c19ad75..816b6260020a6cbb6880b0eed197743c
    if (World().IsMainWorld()) {
      GetFrame()->Loader().DispatchDidClearWindowObjectInMainWorld();
 diff --git a/third_party/blink/renderer/core/frame/local_frame_client.h b/third_party/blink/renderer/core/frame/local_frame_client.h
-index 0dda1f7cd77c47f7e61ba48dd20429c13679b543..2f73aacda1bafe07775213e232eda56c4b33325b 100644
+index c28bc5f4d285ab2db1b0501ad8663c4f948f3ddc..327c04b40460fc033ca7f4e4f838608cfc6c0ba3 100644
 --- a/third_party/blink/renderer/core/frame/local_frame_client.h
 +++ b/third_party/blink/renderer/core/frame/local_frame_client.h
-@@ -308,6 +308,8 @@ class CORE_EXPORT LocalFrameClient : public FrameClient {
+@@ -311,6 +311,8 @@ class CORE_EXPORT LocalFrameClient : public FrameClient {
  
    virtual void DidCreateScriptContext(v8::Local<v8::Context>,
                                        int32_t world_id) = 0;
@@ -92,7 +92,7 @@ index 0dda1f7cd77c47f7e61ba48dd20429c13679b543..2f73aacda1bafe07775213e232eda56c
                                          int32_t world_id) = 0;
    virtual bool AllowScriptExtensions() = 0;
 diff --git a/third_party/blink/renderer/core/frame/local_frame_client_impl.cc b/third_party/blink/renderer/core/frame/local_frame_client_impl.cc
-index 5297ad63f1c76240d57a64cc5ea64cbf8c7e1b95..006da6072db12da1632f9d45ecb5710136573641 100644
+index 0922aaf1a5f076ed4544b6870ac3674b023c428b..ff8ccf56eaafe36fe4de08a448789b13033e8604 100644
 --- a/third_party/blink/renderer/core/frame/local_frame_client_impl.cc
 +++ b/third_party/blink/renderer/core/frame/local_frame_client_impl.cc
 @@ -274,6 +274,13 @@ void LocalFrameClientImpl::DidCreateScriptContext(
@@ -110,7 +110,7 @@ index 5297ad63f1c76240d57a64cc5ea64cbf8c7e1b95..006da6072db12da1632f9d45ecb57101
      v8::Local<v8::Context> context,
      int32_t world_id) {
 diff --git a/third_party/blink/renderer/core/frame/local_frame_client_impl.h b/third_party/blink/renderer/core/frame/local_frame_client_impl.h
-index 708414fca139eb8328e425d909a48ca97038e442..48b2a0e129ec166ebd4c9bbd32330b0cc43dbeb2 100644
+index 59dd5662dccea2e570b93e7bbdc59fded301979c..30d7bafbf5877d71868fbdec9abbcacacd4b72a8 100644
 --- a/third_party/blink/renderer/core/frame/local_frame_client_impl.h
 +++ b/third_party/blink/renderer/core/frame/local_frame_client_impl.h
 @@ -78,6 +78,8 @@ class CORE_EXPORT LocalFrameClientImpl final : public LocalFrameClient {
@@ -123,10 +123,10 @@ index 708414fca139eb8328e425d909a48ca97038e442..48b2a0e129ec166ebd4c9bbd32330b0c
                                  int32_t world_id) override;
  
 diff --git a/third_party/blink/renderer/core/loader/empty_clients.h b/third_party/blink/renderer/core/loader/empty_clients.h
-index 4b639069d5d9173f0c35fe7656356031ba424a61..3da6699b40bf4f91e6d76a37e5fa8f680f7a7850 100644
+index 4fa74cc53ddd7557dc5b9e9e6c7ed16214f049b9..cf1e3e898f3b4c9461ed700e0776856689b4c65b 100644
 --- a/third_party/blink/renderer/core/loader/empty_clients.h
 +++ b/third_party/blink/renderer/core/loader/empty_clients.h
-@@ -357,6 +357,8 @@ class CORE_EXPORT EmptyLocalFrameClient : public LocalFrameClient {
+@@ -356,6 +356,8 @@ class CORE_EXPORT EmptyLocalFrameClient : public LocalFrameClient {
  
    void DidCreateScriptContext(v8::Local<v8::Context>,
                                int32_t world_id) override {}

patches/chromium/add_ui_scopedcliboardwriter_writeunsaferawdata.patch

@@ -8,12 +8,12 @@ was removed as part of the Raw Clipboard API scrubbing.
 https://bugs.chromium.org/p/chromium/issues/detail?id=1217643
 
 diff --git a/ui/base/clipboard/scoped_clipboard_writer.cc b/ui/base/clipboard/scoped_clipboard_writer.cc
-index 3009acd40eee36bc3d4dd8642f0ce5e6476da973..1d52ce84184a3ca94e4e0f04d331bf56d75e07d0 100644
+index 153f169d2cdef6f8a726c188283a5bc1b7395fa3..3a5d9ab8dafacafb1025e1cb8c157e8a82078424 100644
 --- a/ui/base/clipboard/scoped_clipboard_writer.cc
 +++ b/ui/base/clipboard/scoped_clipboard_writer.cc
-@@ -227,6 +227,16 @@ void ScopedClipboardWriter::WriteEncodedDataTransferEndpointForTesting(
+@@ -212,6 +212,16 @@ void ScopedClipboardWriter::WriteData(const std::u16string& format,
+   }
  }
- #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
  
 +void ScopedClipboardWriter::WriteUnsafeRawData(const std::u16string& format,
 +                                               mojo_base::BigBuffer data) {
@@ -29,10 +29,10 @@ index 3009acd40eee36bc3d4dd8642f0ce5e6476da973..1d52ce84184a3ca94e4e0f04d331bf56
    objects_.clear();
    platform_representations_.clear();
 diff --git a/ui/base/clipboard/scoped_clipboard_writer.h b/ui/base/clipboard/scoped_clipboard_writer.h
-index c47909313da0d7cd8a2b3cd670327011af66e3fb..0d259c21507f38124dfa46aceeacfda76cfd4a38 100644
+index 879acd4f6f0101a6da3af58d78eeda877ea41a4a..4d4149b6aa34c7073804994cb1c03368830c736d 100644
 --- a/ui/base/clipboard/scoped_clipboard_writer.h
 +++ b/ui/base/clipboard/scoped_clipboard_writer.h
-@@ -84,6 +84,10 @@ class COMPONENT_EXPORT(UI_BASE_CLIPBOARD) ScopedClipboardWriter {
+@@ -80,6 +80,10 @@ class COMPONENT_EXPORT(UI_BASE_CLIPBOARD) ScopedClipboardWriter {
    // This is only used to write custom format data.
    void WriteData(const std::u16string& format, mojo_base::BigBuffer data);
  
@@ -42,4 +42,4 @@ index c47909313da0d7cd8a2b3cd670327011af66e3fb..0d259c21507f38124dfa46aceeacfda7
 +
    void WriteImage(const SkBitmap& bitmap);
  
- #if BUILDFLAG(IS_CHROMEOS_LACROS)
+   // Mark the data to be written as confidential.

patches/chromium/allow_disabling_blink_scheduler_throttling_per_renderview.patch

@@ -6,10 +6,10 @@ Subject: allow disabling blink scheduler throttling per RenderView
 This allows us to disable throttling for hidden windows.
 
 diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
-index 56c08919ab626a8a7b3bcb892ee94cdee2a106fc..b85bdf4ed574a149a6502e8d21e54f2ee80777a5 100644
+index 2d918fcf473d6ce399dde0413da0b1d7444c32c0..29f53b668d6c8f50d901bf214d19ae08d765944d 100644
 --- a/content/browser/renderer_host/render_view_host_impl.cc
 +++ b/content/browser/renderer_host/render_view_host_impl.cc
-@@ -647,6 +647,11 @@ void RenderViewHostImpl::SetBackgroundOpaque(bool opaque) {
+@@ -633,6 +633,11 @@ void RenderViewHostImpl::SetBackgroundOpaque(bool opaque) {
    GetWidget()->GetAssociatedFrameWidget()->SetBackgroundOpaque(opaque);
  }
  
@@ -22,10 +22,10 @@ index 56c08919ab626a8a7b3bcb892ee94cdee2a106fc..b85bdf4ed574a149a6502e8d21e54f2e
    return is_active();
  }
 diff --git a/content/browser/renderer_host/render_view_host_impl.h b/content/browser/renderer_host/render_view_host_impl.h
-index 9e32df9f5fd765895c8470c3922a62f754e7d409..9bac2321d65d9e54ce88fffafd72a74803ed2c87 100644
+index c2d024d09dda8b221cc588e784cb2d31c273d0ff..c0fd9c5400acf32c89a477797c4d9c45662fb14c 100644
 --- a/content/browser/renderer_host/render_view_host_impl.h
 +++ b/content/browser/renderer_host/render_view_host_impl.h
-@@ -135,6 +135,7 @@ class CONTENT_EXPORT RenderViewHostImpl
+@@ -136,6 +136,7 @@ class CONTENT_EXPORT RenderViewHostImpl
    bool IsRenderViewLive() override;
    void WriteIntoTrace(perfetto::TracedValue context) override;
  
@@ -48,7 +48,7 @@ index 787077d71c04d571aa825bec0a549c5fad2b8574..4b05b80802ba97a46eed60e509b503fc
    // This interface should only be implemented inside content.
    friend class RenderViewHostImpl;
 diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
-index 4e8d36420d6edc1725a840e1b9f123041d21abe4..dd198cb7bf02e509833c6b4c7d8e5d65d20d46dc 100644
+index 975757f5e878004180f155583712ad48de781ef6..3dad0b314f0d4e7f93e8b727f2ef875ce9d4762e 100644
 --- a/content/renderer/render_view_impl.h
 +++ b/content/renderer/render_view_impl.h
 @@ -152,6 +152,8 @@ class CONTENT_EXPORT RenderViewImpl : public blink::WebViewClient,
@@ -61,7 +61,7 @@ index 4e8d36420d6edc1725a840e1b9f123041d21abe4..dd198cb7bf02e509833c6b4c7d8e5d65
    // ADDING NEW FUNCTIONS? Please keep private functions alphabetized and put
    // it in the same order in the .cc file as it was in the header.
 diff --git a/third_party/blink/public/mojom/page/page.mojom b/third_party/blink/public/mojom/page/page.mojom
-index befd736a9cf362514b9a2ee475dc4a814c85a87b..24b2617f56673a3075697802cf5b574b0c766610 100644
+index b7c6ba65551acd31c96be06c3d7595f28b6855b0..21ce5fe263f8a47281b21c45c7bda9eff1cb17b5 100644
 --- a/third_party/blink/public/mojom/page/page.mojom
 +++ b/third_party/blink/public/mojom/page/page.mojom
 @@ -97,4 +97,7 @@ interface PageBroadcast {
@@ -85,10 +85,10 @@ index 14d4a00293ab0b11e733676844ce483992d6cd8e..c6c2dbb9dddd1eaa21e8c7b276d871a3
    // Visibility -----------------------------------------------------------
  
 diff --git a/third_party/blink/renderer/core/exported/web_view_impl.cc b/third_party/blink/renderer/core/exported/web_view_impl.cc
-index 8cdffac8ecb9ed2c6892f1e975a953846e7e3a5c..7e7927c7258963bd95a2c064ef85e410f4d2571d 100644
+index 567ea9b7bd78a229b113ae11849f3e86942c92d6..d525df56c4e33a19431b2980a932956cb1986865 100644
 --- a/third_party/blink/renderer/core/exported/web_view_impl.cc
 +++ b/third_party/blink/renderer/core/exported/web_view_impl.cc
-@@ -3659,6 +3659,13 @@ PageScheduler* WebViewImpl::Scheduler() const {
+@@ -3667,6 +3667,13 @@ PageScheduler* WebViewImpl::Scheduler() const {
    return GetPage()->GetPageScheduler();
  }
  
@@ -102,7 +102,7 @@ index 8cdffac8ecb9ed2c6892f1e975a953846e7e3a5c..7e7927c7258963bd95a2c064ef85e410
  void WebViewImpl::SetVisibilityState(
      mojom::blink::PageVisibilityState visibility_state,
      bool is_initial_state) {
-@@ -3670,7 +3677,8 @@ void WebViewImpl::SetVisibilityState(
+@@ -3678,7 +3685,8 @@ void WebViewImpl::SetVisibilityState(
    }
    GetPage()->SetVisibilityState(visibility_state, is_initial_state);
    GetPage()->GetPageScheduler()->SetPageVisible(
@@ -113,10 +113,10 @@ index 8cdffac8ecb9ed2c6892f1e975a953846e7e3a5c..7e7927c7258963bd95a2c064ef85e410
  
  mojom::blink::PageVisibilityState WebViewImpl::GetVisibilityState() {
 diff --git a/third_party/blink/renderer/core/exported/web_view_impl.h b/third_party/blink/renderer/core/exported/web_view_impl.h
-index 5107ef421138e136b20b25b7bbcc1f0bb246bb66..043266205142e59f88c4c2f2ae6b58bb009f2d9c 100644
+index 63e97c417f1709438319956d9f2ed2f845e950c0..80904ef8478952f38a326fe1cebbff06ff7e25ab 100644
 --- a/third_party/blink/renderer/core/exported/web_view_impl.h
 +++ b/third_party/blink/renderer/core/exported/web_view_impl.h
-@@ -420,6 +420,7 @@ class CORE_EXPORT WebViewImpl final : public WebView,
+@@ -419,6 +419,7 @@ class CORE_EXPORT WebViewImpl final : public WebView,
    LocalDOMWindow* PagePopupWindow() const;
  
    PageScheduler* Scheduler() const override;
@@ -124,7 +124,7 @@ index 5107ef421138e136b20b25b7bbcc1f0bb246bb66..043266205142e59f88c4c2f2ae6b58bb
    void SetVisibilityState(mojom::blink::PageVisibilityState visibility_state,
                            bool is_initial_state) override;
    mojom::blink::PageVisibilityState GetVisibilityState() override;
-@@ -857,6 +858,8 @@ class CORE_EXPORT WebViewImpl final : public WebView,
+@@ -855,6 +856,8 @@ class CORE_EXPORT WebViewImpl final : public WebView,
    // If true, we send IPC messages when |preferred_size_| changes.
    bool send_preferred_size_changes_ = false;
  

patches/chromium/allow_in-process_windows_to_have_different_web_prefs.patch

@@ -8,19 +8,21 @@ WebPreferences of in-process child windows, rather than relying on
 process-level command line switches, as before.
 
 diff --git a/third_party/blink/common/web_preferences/web_preferences.cc b/third_party/blink/common/web_preferences/web_preferences.cc
-index 30e237f886b41bdf528b2a0e81054d15fb323f1f..43f7920cf6ff12d8a48ddef5440814a42266e8c5 100644
+index 6356025f24855b789b0fdb492ca61232bc6d8000..37b08cb04db0cc16636cfa9db6cc91f050cc85ab 100644
 --- a/third_party/blink/common/web_preferences/web_preferences.cc
 +++ b/third_party/blink/common/web_preferences/web_preferences.cc
-@@ -145,6 +145,20 @@ WebPreferences::WebPreferences()
+@@ -144,6 +144,22 @@ WebPreferences::WebPreferences()
        fake_no_alloc_direct_call_for_testing_enabled(false),
        v8_cache_options(blink::mojom::V8CacheOptions::kDefault),
        record_whole_document(false),
 +      // Begin Electron-specific WebPreferences.
++      opener_id(0),
 +      context_isolation(false),
 +      is_webview(false),
 +      hidden_page(false),
 +      offscreen(false),
 +      preload(base::FilePath::StringType()),
++      native_window_open(false),
 +      node_integration(false),
 +      node_integration_in_worker(false),
 +      node_integration_in_sub_frames(false),
@@ -33,7 +35,7 @@ index 30e237f886b41bdf528b2a0e81054d15fb323f1f..43f7920cf6ff12d8a48ddef5440814a4
        accelerated_video_decode_enabled(false),
        animation_policy(
 diff --git a/third_party/blink/common/web_preferences/web_preferences_mojom_traits.cc b/third_party/blink/common/web_preferences/web_preferences_mojom_traits.cc
-index d278453a261fe2dd3bacce433e35d50879b555a7..140f8d6273d944bfe36831d27aef757d89240b56 100644
+index 98391c17bc6c3371919966e9caf09efbcc94cec6..c4f9f01aaf44a14e13b285fa0f6287f068c5e401 100644
 --- a/third_party/blink/common/web_preferences/web_preferences_mojom_traits.cc
 +++ b/third_party/blink/common/web_preferences/web_preferences_mojom_traits.cc
 @@ -22,6 +22,10 @@ bool StructTraits<blink::mojom::WebPreferencesDataView,
@@ -47,15 +49,17 @@ index d278453a261fe2dd3bacce433e35d50879b555a7..140f8d6273d944bfe36831d27aef757d
        !data.ReadLazyFrameLoadingDistanceThresholdsPx(
            &out->lazy_frame_loading_distance_thresholds_px) ||
        !data.ReadLazyImageLoadingDistanceThresholdsPx(
-@@ -151,6 +155,19 @@ bool StructTraits<blink::mojom::WebPreferencesDataView,
+@@ -156,6 +160,21 @@ bool StructTraits<blink::mojom::WebPreferencesDataView,
        data.fake_no_alloc_direct_call_for_testing_enabled();
    out->v8_cache_options = data.v8_cache_options();
    out->record_whole_document = data.record_whole_document();
 +  // Begin Electron-specific WebPreferences.
++  out->opener_id = data.opener_id();
 +  out->context_isolation = data.context_isolation();
 +  out->is_webview = data.is_webview();
 +  out->hidden_page = data.hidden_page();
 +  out->offscreen = data.offscreen();
++  out->native_window_open = data.native_window_open();
 +  out->node_integration = data.node_integration();
 +  out->node_integration_in_worker = data.node_integration_in_worker();
 +  out->node_integration_in_sub_frames = data.node_integration_in_sub_frames();
@@ -68,7 +72,7 @@ index d278453a261fe2dd3bacce433e35d50879b555a7..140f8d6273d944bfe36831d27aef757d
    out->accelerated_video_decode_enabled =
        data.accelerated_video_decode_enabled();
 diff --git a/third_party/blink/public/common/web_preferences/web_preferences.h b/third_party/blink/public/common/web_preferences/web_preferences.h
-index 8509f720c5afb816c6cbb2313dd566a24236a790..b9f0f79d96c58a7769939610bb72f8b2bcd3be94 100644
+index 9eefe05ffbd6f78a869e2a7449a8fa7c7d456dda..3f84267ed1d7158b168709270be6a01da7dcfa31 100644
 --- a/third_party/blink/public/common/web_preferences/web_preferences.h
 +++ b/third_party/blink/public/common/web_preferences/web_preferences.h
 @@ -10,6 +10,7 @@
@@ -79,17 +83,19 @@ index 8509f720c5afb816c6cbb2313dd566a24236a790..b9f0f79d96c58a7769939610bb72f8b2
  #include "net/nqe/effective_connection_type.h"
  #include "third_party/blink/public/common/common_export.h"
  #include "third_party/blink/public/mojom/css/preferred_color_scheme.mojom-shared.h"
-@@ -160,6 +161,22 @@ struct BLINK_COMMON_EXPORT WebPreferences {
+@@ -161,6 +162,24 @@ struct BLINK_COMMON_EXPORT WebPreferences {
    blink::mojom::V8CacheOptions v8_cache_options;
    bool record_whole_document;
  
 +  // Begin Electron-specific WebPreferences.
 +  std::vector<base::FilePath> preloads;
++  int opener_id;
 +  bool context_isolation;
 +  bool is_webview;
 +  bool hidden_page;
 +  bool offscreen;
 +  base::FilePath preload;
++  bool native_window_open;
 +  bool node_integration;
 +  bool node_integration_in_worker;
 +  bool node_integration_in_sub_frames;
@@ -103,7 +109,7 @@ index 8509f720c5afb816c6cbb2313dd566a24236a790..b9f0f79d96c58a7769939610bb72f8b2
    // only controls whether or not the "document.cookie" field is properly
    // connected to the backing store, for instance if you wanted to be able to
 diff --git a/third_party/blink/public/common/web_preferences/web_preferences_mojom_traits.h b/third_party/blink/public/common/web_preferences/web_preferences_mojom_traits.h
-index a6291be3e953ceaee1d996e4b30a6ae78916bc7a..c3baf95c5d9b6a6ace56bcde9e1dc8179f18eaa0 100644
+index 5124059d0df902d3879f2c96d001472a10c2ead1..b9a3e3ed17bb227f1e5ec868880a19ef19331b07 100644
 --- a/third_party/blink/public/common/web_preferences/web_preferences_mojom_traits.h
 +++ b/third_party/blink/public/common/web_preferences/web_preferences_mojom_traits.h
 @@ -6,6 +6,7 @@
@@ -114,7 +120,7 @@ index a6291be3e953ceaee1d996e4b30a6ae78916bc7a..c3baf95c5d9b6a6ace56bcde9e1dc817
  #include "mojo/public/cpp/bindings/struct_traits.h"
  #include "net/nqe/effective_connection_type.h"
  #include "third_party/blink/public/common/common_export.h"
-@@ -441,6 +442,60 @@ struct BLINK_COMMON_EXPORT StructTraits<blink::mojom::WebPreferencesDataView,
+@@ -446,6 +447,68 @@ struct BLINK_COMMON_EXPORT StructTraits<blink::mojom::WebPreferencesDataView,
      return r.record_whole_document;
    }
  
@@ -123,6 +129,10 @@ index a6291be3e953ceaee1d996e4b30a6ae78916bc7a..c3baf95c5d9b6a6ace56bcde9e1dc817
 +    return r.preloads;
 +  }
 +
++  static int opener_id(const blink::web_pref::WebPreferences& r) {
++    return r.opener_id;
++  }
++
 +  static bool context_isolation(const blink::web_pref::WebPreferences& r) {
 +    return r.context_isolation;
 +  }
@@ -143,6 +153,10 @@ index a6291be3e953ceaee1d996e4b30a6ae78916bc7a..c3baf95c5d9b6a6ace56bcde9e1dc817
 +    return r.preload;
 +  }
 +
++  static bool native_window_open(const blink::web_pref::WebPreferences& r) {
++    return r.native_window_open;
++  }
++
 +  static bool node_integration(const blink::web_pref::WebPreferences& r) {
 +    return r.node_integration;
 +  }
@@ -176,7 +190,7 @@ index a6291be3e953ceaee1d996e4b30a6ae78916bc7a..c3baf95c5d9b6a6ace56bcde9e1dc817
      return r.cookie_enabled;
    }
 diff --git a/third_party/blink/public/mojom/webpreferences/web_preferences.mojom b/third_party/blink/public/mojom/webpreferences/web_preferences.mojom
-index 96dd9fd56e44e66c5ea24d9df7c6cbff25409d6c..e0d113b4dee6a72f350b8494448f516be01d0468 100644
+index 1f0ca7565e7df7bb535bb8c779929f6202273471..3fe9e1089c0cceaa7c6f6e7dff4dac9fc55d2ca2 100644
 --- a/third_party/blink/public/mojom/webpreferences/web_preferences.mojom
 +++ b/third_party/blink/public/mojom/webpreferences/web_preferences.mojom
 @@ -10,6 +10,7 @@ import "third_party/blink/public/mojom/v8_cache_options.mojom";
@@ -187,17 +201,19 @@ index 96dd9fd56e44e66c5ea24d9df7c6cbff25409d6c..e0d113b4dee6a72f350b8494448f516b
  
  enum PointerType {
    kPointerNone                              = 1,             // 1 << 0
-@@ -212,6 +213,22 @@ struct WebPreferences {
+@@ -213,6 +214,24 @@ struct WebPreferences {
    V8CacheOptions v8_cache_options;
    bool record_whole_document;
  
 +  // Begin Electron-specific WebPreferences.
 +  array<mojo_base.mojom.FilePath> preloads;
++  int32 opener_id;
 +  bool context_isolation;
 +  bool is_webview;
 +  bool hidden_page;
 +  bool offscreen;
 +  mojo_base.mojom.FilePath preload;
++  bool native_window_open;
 +  bool node_integration;
 +  bool node_integration_in_worker;
 +  bool node_integration_in_sub_frames;

patches/chromium/allow_new_privileges_in_unsandboxed_child_processes.patch

@@ -6,7 +6,7 @@ Subject: allow new privileges in unsandboxed child processes
 This allows unsandboxed renderers to launch setuid processes on Linux.
 
 diff --git a/content/browser/child_process_launcher_helper_linux.cc b/content/browser/child_process_launcher_helper_linux.cc
-index f60ad777ab7698a4518d3b1b61ade29e7c618a3a..c7781bdb49f8a92aa9ee1d8dd1af03fa9cf2dfe3 100644
+index bbc1d4d057291cc4a3c65287309a22897179a47e..6318b1f2251670d5dd975fde695ee2438c456a0f 100644
 --- a/content/browser/child_process_launcher_helper_linux.cc
 +++ b/content/browser/child_process_launcher_helper_linux.cc
 @@ -53,6 +53,18 @@ bool ChildProcessLauncherHelper::BeforeLaunchOnLauncherThread(

patches/chromium/blink_file_path.patch

@@ -7,10 +7,10 @@ This is used by editors to obtain the filesystem path from a dragged file. See
 documentation at https://electronjs.org/docs/api/file-object
 
 diff --git a/third_party/blink/renderer/core/fileapi/file.h b/third_party/blink/renderer/core/fileapi/file.h
-index 72d6b7e109779c9785130ebb0e1e23202c5bc68d..e12c4acfd87f1d698d7c8c8459e7231ee03789fd 100644
+index d70a95cc9b28674dd4ac925e9f1aca481e60c34b..fa9d21a20e77867a7d596e0df4ec143edb871f27 100644
 --- a/third_party/blink/renderer/core/fileapi/file.h
 +++ b/third_party/blink/renderer/core/fileapi/file.h
-@@ -212,6 +212,9 @@ class CORE_EXPORT File final : public Blob {
+@@ -191,6 +191,9 @@ class CORE_EXPORT File final : public Blob {
    }
    const String& name() const { return name_; }
  

patches/chromium/blink_local_frame.patch

@@ -15,7 +15,7 @@ Refs changes in:
 This patch reverts the changes to fix associated crashes in Electron.
 
 diff --git a/third_party/blink/renderer/core/frame/frame.cc b/third_party/blink/renderer/core/frame/frame.cc
-index 2b0c8720866b45c2a83d639533cb4c3e5dbb70e0..97c251cdc310eb22859efb1ba3ca6312a3236fa5 100644
+index 1b022bf6b37982e6321120951de5d8dcc10ecf6a..5cd7cf680244383e466106801103871b3bba8796 100644
 --- a/third_party/blink/renderer/core/frame/frame.cc
 +++ b/third_party/blink/renderer/core/frame/frame.cc
 @@ -122,14 +122,6 @@ bool Frame::Detach(FrameDetachType type) {
@@ -33,7 +33,7 @@ index 2b0c8720866b45c2a83d639533cb4c3e5dbb70e0..97c251cdc310eb22859efb1ba3ca6312
    if (type == FrameDetachType::kRemove) {
      if (provisional_frame_) {
        provisional_frame_->Detach(FrameDetachType::kRemove);
-@@ -153,6 +145,14 @@ bool Frame::Detach(FrameDetachType type) {
+@@ -152,6 +144,14 @@ bool Frame::Detach(FrameDetachType type) {
      GetWindowProxyManager()->ClearForSwap();
    }
  
@@ -49,10 +49,10 @@ index 2b0c8720866b45c2a83d639533cb4c3e5dbb70e0..97c251cdc310eb22859efb1ba3ca6312
    // its owning reference back to our owning LocalFrame.
    client_->Detached(type);
 diff --git a/third_party/blink/renderer/core/frame/local_frame.cc b/third_party/blink/renderer/core/frame/local_frame.cc
-index db69148e0756ed36bcf3a04f1ace69cc166261a6..bcf072a6d8bc46e5c71d9ef3f248b6af69693ac9 100644
+index e4fa7685539aa22e6bf55bf768aa1f055e1dbdf3..96334220264cdf0afb2014500aeb90001b6fae72 100644
 --- a/third_party/blink/renderer/core/frame/local_frame.cc
 +++ b/third_party/blink/renderer/core/frame/local_frame.cc
-@@ -538,10 +538,6 @@ bool LocalFrame::DetachImpl(FrameDetachType type) {
+@@ -533,10 +533,6 @@ bool LocalFrame::DetachImpl(FrameDetachType type) {
    }
    DCHECK(!view_ || !view_->IsAttached());
  
@@ -63,7 +63,7 @@ index db69148e0756ed36bcf3a04f1ace69cc166261a6..bcf072a6d8bc46e5c71d9ef3f248b6af
    if (!Client())
      return false;
  
-@@ -587,6 +583,11 @@ bool LocalFrame::DetachImpl(FrameDetachType type) {
+@@ -582,6 +578,11 @@ bool LocalFrame::DetachImpl(FrameDetachType type) {
    DCHECK(!view_->IsAttached());
    Client()->WillBeDetached();
  

patches/chromium/boringssl_build_gn.patch

@@ -6,10 +6,10 @@ Subject: boringssl BUILD.gn
 Build BoringSSL with some extra functions that nodejs needs.
 
 diff --git a/third_party/boringssl/BUILD.gn b/third_party/boringssl/BUILD.gn
-index f222ae94a5a10ced84e41ef84560af46a910577f..c18d26de9a63befca3c77fe5ecd93975a016797f 100644
+index 91ce539f2cdf3c17645126088ecb00e36befd1b8..8e1d78fdb56372836cea73e35cb4e03059cf5ec5 100644
 --- a/third_party/boringssl/BUILD.gn
 +++ b/third_party/boringssl/BUILD.gn
-@@ -44,6 +44,20 @@ config("no_asm_config") {
+@@ -47,6 +47,20 @@ config("no_asm_config") {
  
  all_sources = crypto_sources + ssl_sources
  all_headers = crypto_headers + ssl_headers

patches/chromium/breakpad_treat_node_processes_as_browser_processes.patch

@@ -10,7 +10,7 @@ breakpad independently, as a "browser" process. This patches
 crash annotation.
 
 diff --git a/components/crash/core/app/breakpad_linux.cc b/components/crash/core/app/breakpad_linux.cc
-index 43f6d476f3ee2759cf41c492f932522994e7ddec..8df14f416ee321e1259433715a61fa6025207d80 100644
+index f55fd1c92770de6b8bce1fc46a047c79228d451e..5b308900ae8e9d49d711a1638e40c22d1d45af80 100644
 --- a/components/crash/core/app/breakpad_linux.cc
 +++ b/components/crash/core/app/breakpad_linux.cc
 @@ -718,8 +718,13 @@ bool CrashDone(const MinidumpDescriptor& minidump,
@@ -29,7 +29,7 @@ index 43f6d476f3ee2759cf41c492f932522994e7ddec..8df14f416ee321e1259433715a61fa60
    info.distro = base::g_linux_distro;
    info.distro_length = my_strlen(base::g_linux_distro);
    info.upload = upload;
-@@ -2025,8 +2030,13 @@ void InitCrashReporter(const std::string& process_type) {
+@@ -2026,8 +2031,13 @@ void InitCrashReporter(const std::string& process_type) {
        process_type == kWebViewSingleProcessType ||
        process_type == kBrowserProcessType ||
  #endif

patches/chromium/build_add_electron_tracing_category.patch

@@ -8,10 +8,10 @@ categories in use are known / declared.  This patch is required for us
 to introduce a new Electron category for Electron-specific tracing.
 
 diff --git a/base/trace_event/builtin_categories.h b/base/trace_event/builtin_categories.h
-index 107516329273ee4a6cc49433b69f307b1264362b..0c9555a04233d07a186e34ada8b7615095854950 100644
+index f6f346bbc56d4a1f8693330b010fd4b3c2d28628..981eaef314d8ff0301e8d008927d02fc8a12ae54 100644
 --- a/base/trace_event/builtin_categories.h
 +++ b/base/trace_event/builtin_categories.h
-@@ -78,6 +78,7 @@
+@@ -77,6 +77,7 @@
    X("drmcursor")                                                         \
    X("dwrite")                                                            \
    X("DXVA_Decoding")                                                     \

patches/chromium/build_disable_partition_alloc_on_mac.patch

@@ -1,6 +1,6 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: VerteDinde <vertedinde@electronjs.org>
-Date: Tue, 1 Mar 2022 12:07:25 -0800
+Date: Tue, 1 Mar 2022 16:02:22 -0800
 Subject: build: disable partition alloc on mac
 
 Enabling partition alloc caused a crash when spawning
@@ -9,15 +9,15 @@ and can be removed when the crash in fork is resolved.
 Related issue: https://github.com/electron/electron/issues/32718
 
 diff --git a/base/allocator/allocator.gni b/base/allocator/allocator.gni
-index 56acfed89ec4ad4ee568a1b517923efa4b4e9c1f..a1da35a84f896d158ac88368ff6d95025a23ff95 100644
+index 2c35e82ec5ad94840cc894cc55bb90e7c4c00d4f..af34f85f686f61a1d4dc2ee1248af4d0b61e4cb6 100644
 --- a/base/allocator/allocator.gni
 +++ b/base/allocator/allocator.gni
-@@ -20,7 +20,7 @@ _disable_partition_alloc = is_component_build || (is_win && is_debug)
+@@ -18,7 +18,7 @@ _is_using_sanitizers = is_asan || is_hwasan || is_lsan || is_tsan || is_msan
+ # - Windows: debug CRT is not compatible, see below.
+ _disable_partition_alloc = is_component_build || (is_win && is_debug)
+ _is_partition_alloc_platform =
+-    is_android || is_win || is_mac || is_linux || is_chromeos ||
++    is_android || is_win || is_linux || is_chromeos ||
+     # TODO(crbug.com/1278780): Allow x64 once compatible with safe-stack.
+     (is_fuchsia && target_cpu == "arm64")
  
- # - NaCl: No plans to support it.
- # - iOS: not done yet.
--_is_partition_alloc_platform = !is_nacl && !is_ios
-+_is_partition_alloc_platform = !is_nacl && !is_ios && !is_mac
- 
- # Under Windows Debug the allocator shim is not compatible with CRT.
- #     NaCl in particular does seem to link some binaries statically

patches/chromium/build_disable_thin_lto_on_mac.patch

@@ -1,22 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: VerteDinde <vertedinde@electronjs.org>
-Date: Tue, 1 Mar 2022 11:31:59 -0800
-Subject: build: disable thin lto on mac
-
-Ths build disables thin lto for mac, in order to preserve
-disk space on mac without breaking win-ia32.
-The patch can be removed when we have more disk space on CircleCI
-
-diff --git a/build/config/compiler/compiler.gni b/build/config/compiler/compiler.gni
-index 9d25c10587c7ab4e2053f8f69aef3f135ef8e9f9..8d8b8d13c62da1fdd051019c8b726de7d1783113 100644
---- a/build/config/compiler/compiler.gni
-+++ b/build/config/compiler/compiler.gni
-@@ -74,7 +74,7 @@ declare_args() {
-   use_thin_lto =
-       is_cfi ||
-       (is_clang && is_official_build && chrome_pgo_phase != 1 &&
--       (is_linux || is_win || is_mac ||
-+       (is_linux || is_win ||
-         (is_android && target_os != "chromeos") ||
-         ((is_chromeos_ash || is_chromeos_lacros) && is_chromeos_device)))
- 

patches/chromium/build_do_not_depend_on_packed_resource_integrity.patch

@@ -11,7 +11,7 @@ if we ever align our .pak file generation with Chrome we can remove this
 patch.
 
 diff --git a/chrome/BUILD.gn b/chrome/BUILD.gn
-index 7caaf66cad9d5b9f787cea0d49c32c26801571c2..f45691888b74643189b956928fdc796bfc5bcee3 100644
+index 473af396e95a4e67242c3775866fdcd4ce1f4d41..8fa395626b972e53a4c7abaef94609e5a662eaab 100644
 --- a/chrome/BUILD.gn
 +++ b/chrome/BUILD.gn
 @@ -171,11 +171,16 @@ if (!is_android && !is_mac) {
@@ -19,7 +19,7 @@ index 7caaf66cad9d5b9f787cea0d49c32c26801571c2..f45691888b74643189b956928fdc796b
        ]
  
 +      if (!is_electron_build) {
-+        deps = [
++        deps += [
 +          ":packed_resources_integrity",
 +        ]
 +      }
@@ -33,23 +33,23 @@ index 7caaf66cad9d5b9f787cea0d49c32c26801571c2..f45691888b74643189b956928fdc796b
          "//base",
          "//build:branding_buildflags",
 diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
-index 6a40a73520a951d7c6fd06cbd07329a40ff41544..9ca837d995160d57c7efb51c54cf27283b11b20e 100644
+index 834601238cf5f62f7a43b5a2ccc7a743b85efbfe..d032c1b60fdff2d000f497399ea287a09afd97f0 100644
 --- a/chrome/browser/BUILD.gn
 +++ b/chrome/browser/BUILD.gn
-@@ -4502,7 +4502,7 @@ static_library("browser") {
+@@ -4522,7 +4522,7 @@ static_library("browser") {
  
      # On Windows, the hashes are embedded in //chrome:chrome_initial rather
      # than here in :chrome_dll.
 -    if (!is_win) {
 +    if (!is_win && !is_electron_build) {
        deps += [ "//chrome:packed_resources_integrity" ]
-       sources += [ "certificate_viewer_stub.cc" ]
      }
+ 
 diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
-index 7be0809cfd3a08a87b29256241bc11a33abd3d17..e3c85fd9f550da204e36091bad256b1c2400ade8 100644
+index 19387561ba18f2f9bf3a6ef42fc32b9adc7ac375..9c6ae050454f6e0c5032f3aea43e4123e06f3ff3 100644
 --- a/chrome/test/BUILD.gn
 +++ b/chrome/test/BUILD.gn
-@@ -5719,7 +5719,6 @@ test("unit_tests") {
+@@ -5529,7 +5529,6 @@ test("unit_tests") {
  
      deps += [
        "//chrome:other_version",
@@ -57,7 +57,7 @@ index 7be0809cfd3a08a87b29256241bc11a33abd3d17..e3c85fd9f550da204e36091bad256b1c
        "//chrome//services/util_win:unit_tests",
        "//chrome/app:chrome_dll_resources",
        "//chrome/browser:chrome_process_finder",
-@@ -5742,6 +5741,10 @@ test("unit_tests") {
+@@ -5552,6 +5551,10 @@ test("unit_tests") {
        "//ui/resources",
      ]
  
@@ -68,7 +68,7 @@ index 7be0809cfd3a08a87b29256241bc11a33abd3d17..e3c85fd9f550da204e36091bad256b1c
      ldflags = [
        "/DELAYLOAD:api-ms-win-core-winrt-error-l1-1-0.dll",
        "/DELAYLOAD:api-ms-win-core-winrt-l1-1-0.dll",
-@@ -6428,7 +6431,6 @@ test("unit_tests") {
+@@ -6243,7 +6246,6 @@ test("unit_tests") {
      }
  
      deps += [
@@ -76,7 +76,7 @@ index 7be0809cfd3a08a87b29256241bc11a33abd3d17..e3c85fd9f550da204e36091bad256b1c
        "//chrome/browser:cart_db_content_proto",
        "//chrome/browser:coupon_db_content_proto",
        "//chrome/browser/media/router:test_support",
-@@ -6473,6 +6475,11 @@ test("unit_tests") {
+@@ -6284,6 +6286,11 @@ test("unit_tests") {
        "//ui/native_theme:test_support",
        "//ui/webui/resources/js/browser_command:mojo_bindings",
      ]

patches/chromium/build_libc_as_static_library.patch

@@ -7,10 +7,10 @@ Build libc++ as static library to compile and pass
 nan tests
 
 diff --git a/buildtools/third_party/libc++/BUILD.gn b/buildtools/third_party/libc++/BUILD.gn
-index 7915346430db72d18474d7a011b8dc7637c3f281..cd736d988f9c5e37dc24c724268fe115e00914d9 100644
+index 48f0bdb17e0a35f6e4d6fa236cd6077910ac76c6..5c95b14441c5604bc14418e4bbaf3df877652b2a 100644
 --- a/buildtools/third_party/libc++/BUILD.gn
 +++ b/buildtools/third_party/libc++/BUILD.gn
-@@ -44,7 +44,11 @@ config("winver") {
+@@ -41,7 +41,11 @@ config("winver") {
  if (libcxx_is_shared) {
    _libcxx_target_type = "shared_library"
  } else {
@@ -23,7 +23,7 @@ index 7915346430db72d18474d7a011b8dc7637c3f281..cd736d988f9c5e37dc24c724268fe115
  }
  target(_libcxx_target_type, "libc++") {
    # Most things that need to depend on libc++ should do so via the implicit
-@@ -52,6 +56,7 @@ target(_libcxx_target_type, "libc++") {
+@@ -49,6 +53,7 @@ target(_libcxx_target_type, "libc++") {
    # need to explicitly depend on libc++.
    visibility = [
      "//build/config:common_deps",