[webkit-reviews] review requested: [Bug 78862] Touch overflow scrolling elements should be split into layers : [Attachment 148562] Patch

[bugzilla-daemon at webkit.org]

Sami Kyöstilä <skyostil at chromium.org> has asked  for review:
Bug 78862: Touch overflow scrolling elements should be split into layers
https://bugs.webkit.org/show_bug.cgi?id=78862

Attachment 148562: Patch
https://bugs.webkit.org/attachment.cgi?id=148562&action=review

------- Additional Comments from Sami Kyöstilä <skyostil at chromium.org>
- Cleaned up most of the #ifdef spaghetti.
- Added test to verify scroll content layer alignment with borders.
- Added test to check outline fallback.