RESOLVED WONTFIX 77356
[Chromium] Implement CompositeDifference 
https://bugs.webkit.org/show_bug.cgi?id=77356
Summary [Chromium] Implement CompositeDifference
Andy Estes
Reported 2012-01-30 12:13:55 PST
<http://trac.webkit.org/changeset/106274> added a new CompositeOperator called CompositeDifference. In CoreGraphics, this maps to kCGBlendModeDifference (see <http://developer.apple.com/library/mac/#documentation/GraphicsImaging/Reference/CGContext/Reference/reference.html#//apple_ref/c/tdef/CGBlendMode>).
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