Port MediaPlayback process assertion to RunningBoard instead of the legacy BKSProcessAssertion.
<rdar://problem/61476951>
Created attachment 395870 [details] Patch
Comment on attachment 395870 [details] Patch r=me
Created attachment 397343 [details] Patch
Committed r260574: <https://trac.webkit.org/changeset/260574> All reviewed patches have been landed. Closing bug and clearing flags on attachment 397343 [details].