to be able to enforce limited display box access.
<rdar://problem/54900815>
Created attachment 377768 [details] Patch
Created attachment 377769 [details] Patch
Comment on attachment 377769 [details] Patch Clearing flags on attachment: 377769 Committed r249356: <https://trac.webkit.org/changeset/249356>
All reviewed patches have been landed. Closing bug.