Add failure tests for https://bugs.webkit.org/show_bug.cgi?id=188069.
Created attachment 345867 [details] PATCH
Created attachment 345868 [details] PATCH
Comment on attachment 345868 [details] PATCH Clearing flags on attachment: 345868 Committed r234277: <https://trac.webkit.org/changeset/234277>
All reviewed patches have been landed. Closing bug.
<rdar://problem/42639171>