GitLab

PlayStateUpdateScope is problematic for handling timing of finished
promises in addition to not conforming with the algorithm outlined in
the web-animations spec. This patch removes several uses of
PlayStateUpdateScope and refines handling of pending flags.

Bug: 960944
Change-Id: I093a3aa86084adfbe128a5aedd36206d67dd12c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1851927
Commit-Queue: Kevin Ellis <kevers@chromium.org>
Reviewed-by: Stephen McGruer <smcgruer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705966}