[Perf] HTMLVideoElement is performing synchronous paints; causing main thread hangs
<rdar://91025299>
Created attachment 456480 [details] Patch
Created attachment 456482 [details] Patch
Committed r292290 (249188@main): <https://commits.webkit.org/249188@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 456482 [details].