[GTK] ImageBuffer: Canonical mimeType for encoding implies startsWith('image/')
Created attachment 136610 [details] Patch
http://trac.webkit.org/browser/trunk/Source/WebCore/platform/MIMETypeRegistry.cpp?rev=113780#L297 for reference.
Comment on attachment 136610 [details] Patch Clearing flags on attachment: 136610 Committed r113833: <http://trac.webkit.org/changeset/113833>
All reviewed patches have been landed. Closing bug.