[macOS] Picture-in-picture should be disabled in WebPlaybackControlsManager during external media playback
rdar://problem/31900349
Created attachment 308633 [details] Patch
Comment on attachment 308633 [details] Patch Clearing flags on attachment: 308633 Committed r215979: <http://trac.webkit.org/changeset/215979>
All reviewed patches have been landed. Closing bug.