[webkit-reviews] review requested: [Bug 167868] will-change: position should create containing block for positioned descendants : [Attachment 300687] Patch

[bugzilla-daemon at webkit.org]

Simon Fraser (smfr) <simon.fraser at apple.com> has asked	for review:
Bug 167868: will-change: position should create containing block for positioned
descendants
https://bugs.webkit.org/show_bug.cgi?id=167868

Attachment 300687: Patch

https://bugs.webkit.org/attachment.cgi?id=300687&action=review