Resized bitmaps, and bitmaps that are finished loading should be marked as immutable since their pixels will remain unchanged for the lifetime of the bitmap. Setting this flag enables optimizations in Skia.
Created attachment 120099 [details] Patch
Comment on attachment 120099 [details] Patch OK. r=me
Comment on attachment 120099 [details] Patch Clearing flags on attachment: 120099 Committed r104246: <http://trac.webkit.org/changeset/104246>
All reviewed patches have been landed. Closing bug.