MediaPlayerPrivateRemote a message receiver
<rdar://problem/58569057>
Created attachment 387661 [details] Patch
Created attachment 387667 [details] Patch
Comment on attachment 387667 [details] Patch Clearing flags on attachment: 387667 Committed r254519: <https://trac.webkit.org/changeset/254519>
All reviewed patches have been landed. Closing bug.