[webkit-reviews] review requested: [Bug 167866] Re-land r210095 (avoid a tile revalidation on scale change) : [Attachment 300683] Patch

[bugzilla-daemon at webkit.org]

Simon Fraser (smfr) <simon.fraser at apple.com> has asked	for review:
Bug 167866: Re-land r210095 (avoid a tile revalidation on scale change)
https://bugs.webkit.org/show_bug.cgi?id=167866

Attachment 300683: Patch

https://bugs.webkit.org/attachment.cgi?id=300683&action=review