build: enable sccache on windows (electron#20790)

* build: enable sccache on windows

* chore: temporarily disable the docs only check

* build: fix escaping in sccache path on windows

* Update appveyor.yml

* Update appveyor.yml

* Use sccache settings from CI

* Use Azure enabled sccache for Windows

appveyor.yml

@@ -79,7 +79,7 @@ build_script:
   - gclient sync --with_branch_heads --with_tags --reset
   - cd src
   - ps: $env:BUILD_CONFIG_PATH="//electron/build/args/%GN_CONFIG%.gn"
-  - gn gen out/Default "--args=import(\"%BUILD_CONFIG_PATH%\") %GN_EXTRA_ARGS%"
+  - gn gen out/Default "--args=import(\"%BUILD_CONFIG_PATH%\") %GN_EXTRA_ARGS% cc_wrapper=\"%SCCACHE_PATH%\""
   - gn check out/Default //electron:electron_lib
   - gn check out/Default //electron:electron_app
   - gn check out/Default //electron:manifests
@@ -94,6 +94,7 @@ build_script:
   - ninja -C out/Default electron:hunspell_dictionaries_zip
   - ninja -C out/Default electron:electron_chromedriver_zip
   - ninja -C out/Default third_party/electron_node:headers
+  - cmd /C %SCCACHE_PATH% --show-stats
   - appveyor PushArtifact out/Default/dist.zip
   - appveyor PushArtifact out/Default/shell_browser_ui_unittests.exe
   - appveyor PushArtifact out/Default/chromedriver.zip

script/external-binaries.json

@@ -1,6 +1,6 @@
 {
   "baseUrl": "https://github.com/electron/electron-frameworks/releases/download",
-  "version": "v1.4.0",
+  "version": "v1.4.1",
   "binaries": [
     {
       "url": "Mantle.zip",