This was added in <http://trac.webkit.org/changeset/39819> and all use of it removed in <http://trac.webkit.org/changeset/63721>
Created attachment 74461 [details] Proposed patch
Comment on attachment 74461 [details] Proposed patch r=me
Comment on attachment 74461 [details] Proposed patch Clearing flags on attachment: 74461 Committed r72479: <http://trac.webkit.org/changeset/72479>
All reviewed patches have been landed. Closing bug.