2017-01-25 20:31:06 +00:00
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# Upgrading Chrome Checklist
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This document is meant to serve as an overview of what steps are needed
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on each Chrome upgrade in Electron.
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These are things to do in addition to updating the Electron code for any
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Chrome/Node API changes.
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- Verify the new Chrome version is available from
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https://github.com/zcbenz/chromium-source-tarball/releases
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- Update the `VERSION` file at the root of the `electron/libchromiumcontent`
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repository
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- Update the `CLANG_REVISION` in `script/update-clang.sh` to match the version
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Chrome is using in `libchromiumcontent/src/tools/clang/scripts/update.py`
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- Upgrade `vendor/node` to the Node release that corresponds to the v8 version
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being used in the new Chrome release. See the v8 versions in Node on
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https://nodejs.org/en/download/releases for more details
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- Upgrade `vendor/crashpad` for any crash reporter changes needed
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- Upgrade `vendor/depot_tools` for any build tools changes needed
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- Update the `libchromiumcontent` SHA-1 to download in `script/lib/config.py`
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- Open a pull request on `electron/libchromiumcontent` with the changes
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- Open a pull request on `electron/electron` with the changes
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- This should include upgrading the submodules in `vendor/` as needed
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- Verify debug builds succeed on:
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- macOS
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- 32-bit Windows
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- 64-bit Window
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- 32-bit Linux
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- 64-bit Linux
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- ARM Linux
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- Verify release builds succeed on:
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- macOS
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- 32-bit Windows
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- 64-bit Window
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- 32-bit Linux
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- 64-bit Linux
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- ARM Linux
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- Verify tests pass on:
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- macOS
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- 32-bit Windows
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- 64-bit Window
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- 32-bit Linux
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- 64-bit Linux
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- ARM Linux
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2017-03-29 22:08:06 +00:00
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## Verify ffmpeg Support
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2017-03-29 22:07:30 +00:00
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Electron ships with a version of `ffmpeg` that includes proprietary codecs by
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default. A version without these codecs is built and distributed with each
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release as well. Each Chrome upgrade should verify that switching this version is
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still supported.
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You can verify Electron's support for multiple `ffmpeg` builds by loading the
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following page. It should work with the default `ffmpeg` library distributed
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with Electron and not work with the `ffmpeg` library built without proprietary
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codecs.
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```html
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Proprietary Codec Check</title>
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</head>
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<body>
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<p>Checking if Electron is using proprietary codecs by loading video from http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4</p>
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<p id="outcome"></p>
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<video style="display:none" src="http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4" autoplay></video>
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<script>
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const video = document.querySelector('video')
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video.addEventListener('error', ({target}) => {
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if (target.error.code === target.error.MEDIA_ERR_SRC_NOT_SUPPORTED) {
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document.querySelector('#outcome').textContent = 'Not using proprietary codecs, video emitted source not supported error event.'
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} else {
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document.querySelector('#outcome').textContent = `Unexpected error: ${target.error.code}`
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}
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})
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video.addEventListener('playing', () => {
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document.querySelector('#outcome').textContent = 'Using proprietary codecs, video started playing.'
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})
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</script>
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</body>
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</html>
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```
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2017-01-25 20:31:06 +00:00
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## Links
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- [Chrome Release Schedule](https://www.chromium.org/developers/calendar)
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