There can be event listener leaks because closed() is never being called.
<rdar://problem/20702147>
Created attachment 251700 [details] Patch
Comment on attachment 251700 [details] Patch Good fix! r=me!
Comment on attachment 251700 [details] Patch Clearing flags on attachment: 251700 Committed r183422: <http://trac.webkit.org/changeset/183422>
All reviewed patches have been landed. Closing bug.