[webkit-reviews] review requested: [Bug 80917] Refactor some code that is used to check whether a layer needs backing store : [Attachment 131478] Patch

[bugzilla-daemon at webkit.org]

Simon Fraser (smfr) <simon.fraser at apple.com> has asked	for review:
Bug 80917: Refactor some code that is used to check whether a layer needs
backing store
https://bugs.webkit.org/show_bug.cgi?id=80917

Attachment 131478: Patch
https://bugs.webkit.org/attachment.cgi?id=131478&action=review