Removing and re-adding a script message handler with the same name results in an unusable message handler
Created attachment 273407 [details] Patch
<rdar://problem/25064140>
Comment on attachment 273407 [details] Patch Clearing flags on attachment: 273407 Committed r197868: <http://trac.webkit.org/changeset/197868>
All reviewed patches have been landed. Closing bug.