[webkit-reviews] review requested: [Bug 79659] Optimize Canvas fill and drawImage with SourceIn, DestinationIn, SourceOut, and DestinationAtop using transparencyLayer. : [Attachment 129122] patch v.3

[bugzilla-daemon at webkit.org]

Huang Dongsung <luxtella at company100.net> has asked  for review:
Bug 79659: Optimize Canvas fill and drawImage with SourceIn, DestinationIn,
SourceOut, and DestinationAtop using transparencyLayer.
https://bugs.webkit.org/show_bug.cgi?id=79659

Attachment 129122: patch v.3
https://bugs.webkit.org/attachment.cgi?id=129122&action=review