[webkit-reviews] review requested: [Bug 136400] Avoid backing store allocation with some combinations of replaced elements, masking and visibility:hidden : [Attachment 237396] Patch

[bugzilla-daemon at webkit.org]

Simon Fraser (smfr) <simon.fraser at apple.com> has asked	for review:
Bug 136400: Avoid backing store allocation with some combinations of replaced
elements, masking and visibility:hidden
https://bugs.webkit.org/show_bug.cgi?id=136400

Attachment 237396: Patch
https://bugs.webkit.org/attachment.cgi?id=237396&action=review