[webkit-reviews] review requested: [Bug 89704] [chromium] Do not accumulate occlusion from 3d layers on the main thread : [Attachment 148912] Patch

[bugzilla-daemon at webkit.org]

Shawn Singh <shawnsingh at chromium.org> has asked  for review:
Bug 89704: [chromium] Do not accumulate occlusion from 3d layers on the main
thread
https://bugs.webkit.org/show_bug.cgi?id=89704

Attachment 148912: Patch
https://bugs.webkit.org/attachment.cgi?id=148912&action=review

------- Additional Comments from Shawn Singh <shawnsingh at chromium.org>
(1) added the proposed fix (2) added a unit test (3) moved one
CCOcclusionTracker unit test from main thread to impl thread, so that 3d layers
still cause occlusion for that test. Tested manually, unit, and layout on osx,
no obvious regressions.