[webkit-reviews] review requested: [Bug 112457] Don't compute background obscuration on every repaint : [Attachment 193704] Caching and invalidation if obscuration status

[bugzilla-daemon at webkit.org]

Antti Koivisto <koivisto at iki.fi> has asked  for review:
Bug 112457: Don't compute background obscuration on every repaint
https://bugs.webkit.org/show_bug.cgi?id=112457

Attachment 193704: Caching and invalidation if obscuration status
https://bugs.webkit.org/attachment.cgi?id=193704&action=review