See attached test-case.
Created attachment 231758 [details] Repro
Created attachment 231769 [details] Patch
Comment on attachment 231769 [details] Patch r=me
Comment on attachment 231769 [details] Patch Clearing flags on attachment: 231769 Committed r169120: <http://trac.webkit.org/changeset/169120>
All reviewed patches have been landed. Closing bug.