[webkit-reviews] review requested: [Bug 78862] Touch overflow scrolling elements should be split into layers : [Attachment 147879] Patch

[bugzilla-daemon at webkit.org]

Sami Kyostila <skyostil at google.com> 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 147879: Patch
https://bugs.webkit.org/attachment.cgi?id=147879&action=review

------- Additional Comments from Sami Kyostila <skyostil at google.com>
- Keep all ScrollableAreas -- fast scrollable or not -- in the FrameView's
scrollable area set.
- Add layout tests to verify graphics layer configuration and stacking context
behavior with overflow:hidden.