GIFImageDecoder::initializeFrameBuffer use a loop to fill a subrect with tranparent pixels. This is extremely ineffecient. The use case for this code path is not frequent on the web but it's still better to fix.
Created attachment 205993 [details]
Comment on attachment 205993 [details]
Clearing flags on attachment: 205993
Committed r152352: <http://trac.webkit.org/changeset/152352>
All reviewed patches have been landed. Closing bug.