[webkit-reviews] review requested: [Bug 49780] [chromium] Implement alpha masking for composited layers : [Attachment 74346] proposed patch

[bugzilla-daemon at webkit.org]

Vangelis Kokkevis <vangelis at chromium.org> has asked  for review:
Bug 49780: [chromium] Implement alpha masking for composited layers
https://bugs.webkit.org/show_bug.cgi?id=49780

Attachment 74346: proposed patch
https://bugs.webkit.org/attachment.cgi?id=74346&action=review