-[WebAVPlayerController isPlayingOnSecondScreen] is declared read-only but should be read-write
<rdar://problem/40243303>
Created attachment 342734 [details] Patch
Comment on attachment 342734 [details] Patch Clearing flags on attachment: 342734 Committed r232842: <https://trac.webkit.org/changeset/232842>
All reviewed patches have been landed. Closing bug.