On iOS, add telemetry for message filtering in the WebContent process' sandbox.
rdar://problem/58885485
Created attachment 393258 [details] Patch
Comment on attachment 393258 [details] Patch Thanks for reviewing!
Comment on attachment 393258 [details] Patch Clearing flags on attachment: 393258 Committed r258496: <https://trac.webkit.org/changeset/258496>
All reviewed patches have been landed. Closing bug.
Re-opened since this is blocked by bug 209217
ChangeLog entry in Source/WebKit/ChangeLog contains OOPS!.
Committed r258713: <https://trac.webkit.org/changeset/258713/webkit>