This roll brings in a bunch of important patches:
- crrev.com/512647 Changed headless browser profile dir to use Default profile path
- crrev.com/512760 DevTools: stop idleness detector when pending navigation commits
- crrev.com/512905 DevTools: introduce Page.getFrameTree
- crrev.com/513373 DevTools: report loaderId in the lifecycle events
- crrev.com/513419 DevTools: introduce Page.setLifecycleEventsEnabled
- crrev.com/513422 DevTools: return loaderId from Page.navigate
Fixes#921
BREAKING CHANGE:
Headless user profile structure is changing. Custom profiles set with --user-data-dir flag will no longer be read in Chrome 63 and will have to be recreated.
Alternatively, you can migrate old headless profile to a new structure. if you stored your profile in `<profile>` folder, you would run the following bash commands:
```bash
cd <profile>
mkdir Default
mv * Default
```
Full headless-dev PSA announcement: https://groups.google.com/a/chromium.org/forum/#!msg/headless-dev/asX8WgktXIE/zTUfmHDcAQAJ
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