[webkit-reviews] review requested: [Bug 136556] Improve the logic for compositing backing store avoidance : [Attachment 237656] Patch

[bugzilla-daemon at webkit.org]

Simon Fraser (smfr) <simon.fraser at apple.com> has asked	for review:
Bug 136556: Improve the logic for compositing backing store avoidance
https://bugs.webkit.org/show_bug.cgi?id=136556

Attachment 237656: Patch
https://bugs.webkit.org/attachment.cgi?id=237656&action=review