Some property names are wrong.
Created attachment 309471 [details] Patch
Created attachment 309482 [details] Patch
Comment on attachment 309482 [details] Patch LGTM
Comment on attachment 309482 [details] Patch Clearing flags on attachment: 309482 Committed r216488: <http://trac.webkit.org/changeset/216488>
All reviewed patches have been landed. Closing bug.