After image decoding operation is recorded make sure decode and playback and happen safely on impl thread.
Created attachment 175054 [details] Patch
Created attachment 175055 [details] Patch
Created attachment 175108 [details] Patch
nduca@, senorblanco@: any comments on this? I want to have this thread safety so I can work backwards to implement the thread safe caching backend.
Comment on attachment 175108 [details] Patch OK. r=me
Comment on attachment 175108 [details] Patch Omnomnom lgtm
Comment on attachment 175108 [details] Patch Clearing flags on attachment: 175108 Committed r135313: <http://trac.webkit.org/changeset/135313>
All reviewed patches have been landed. Closing bug.