Part of https://bugs.webkit.org/show_bug.cgi?id=203690.
Created attachment 385294 [details] Patch
Created attachment 385295 [details] Patch
Comment on attachment 385295 [details] Patch Clearing flags on attachment: 385295 Committed r253377: <https://trac.webkit.org/changeset/253377>
All reviewed patches have been landed. Closing bug.
<rdar://problem/57841475>