This is pretty much rolling out https://trac.webkit.org/changeset/192103/webkit
<rdar://problem/32170759>
Created attachment 309996 [details] Patch
Comment on attachment 309996 [details] Patch Clearing flags on attachment: 309996 Committed r216825: <http://trac.webkit.org/changeset/216825>
All reviewed patches have been landed. Closing bug.