Rolling out <http://trac.webkit.org/changeset/175171>. It wasn't a huge win and Brady says it caused crash at <rdar://problem/21349934>. Radar: <rdar://problem/21349934>
Created attachment 255852 [details] Patch
Comment on attachment 255852 [details] Patch Clearing flags on attachment: 255852 Committed r186137: <http://trac.webkit.org/changeset/186137>
All reviewed patches have been landed. Closing bug.