Drop support for legacy EventException. Both Firefox and Chrome do not support it, and our implementation no longer throws such exceptions.
<rdar://problem/22879795>
Created attachment 262010 [details] Patch
Comment on attachment 262010 [details] Patch Clearing flags on attachment: 262010 Committed r190281: <http://trac.webkit.org/changeset/190281>
All reviewed patches have been landed. Closing bug.