[webkit-reviews] review requested: [Bug 78864] Register fixed position layers with ScrollingCoordinator : [Attachment 147557] Patch

[bugzilla-daemon at webkit.org]

Sami Kyostila <skyostil at google.com> has asked  for review:
Bug 78864: Register fixed position layers with ScrollingCoordinator
https://bugs.webkit.org/show_bug.cgi?id=78864

Attachment 147557: Patch
https://bugs.webkit.org/attachment.cgi?id=147557&action=review

------- Additional Comments from Sami Kyostila <skyostil at google.com>
- Renamed setLayerIsFixedToContainerLayerVisibleRect =>
setLayerIsFixedToContainerLayer.
- Fixed layout test failure. Also setNeedsCommit() when a layer's container bit
changes, but only if there are fixed positioned descendants to avoid breaking
the same test.
- Use hasLayer() instead of downcast + layer().