Joe Drew e10ce649b4 Bug 867774 - Create a FrameBlender class that holds on to an image's frames and can blend frames together on demand (while leaving the decision as to which frames to external users). r=seth
FrameBlender steals RasterImage::mFrames, RasterImage::DoComposite, and the
RasterImage blending helper functions CopyFrameImage, DrawFrameTo, and
ClearFrame. Now RasterImage doesn't hold on to its frames directly, and defers
all blending to FrameBlender::DoComposite.

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extra : rebase_source : f03736045f967f0947441703e54135b98d9dcf54
2013-06-17 16:49:04 -04:00
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