GitLab

When a new playback request arrives on a site that is already playing
videos in PiP, make sure the MediaSession is active.

Bug: 1062291
Change-Id: Ib082b183a0ccd32f757841c1e37564be92a0692e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2120403
Commit-Queue: Wojciech Dzierżanowski <wdzierzanowski@opera.com>
Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755313}