[webkit-reviews] review requested: [Bug 76015] [chromium] Use region reported painted opaque for draw culling : [Attachment 123558] Patch

[bugzilla-daemon at webkit.org]

Dana Jansens <danakj at chromium.org> has asked  for review:
Bug 76015: [chromium] Use region reported painted opaque for draw culling
https://bugs.webkit.org/show_bug.cgi?id=76015

Attachment 123558: Patch
https://bugs.webkit.org/attachment.cgi?id=123558&action=review

------- Additional Comments from Dana Jansens <danakj at chromium.org>
Rebased.