This will make things clearer.
Created attachment 341552 [details] Patch
Comment on attachment 341552 [details] Patch r=me
Comment on attachment 341552 [details] Patch Clearing flags on attachment: 341552 Committed r232309: <https://trac.webkit.org/changeset/232309>
All reviewed patches have been landed. Closing bug.
<rdar://problem/40661791>