GitLab

The FrameThrottlingObserver class observes the start/end of frame
throttling.

Bug: None
Change-Id: Ied963e3098ab5dff447fb68c9939314568bb4aaa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2466207
Commit-Queue: Jun Liu <yjliu@chromium.org>
Reviewed-by: Jun Mukai <mukai@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Auto-Submit: Jun Liu <yjliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816592}