GitLab

Implement RequestDecode solely in blink calling a
ScheduleAnimationForWebTests after a decode is queued. This matches the
previous WebWidgetTestProxy override and is a similar flow for
ForcedDraw presentation callback.

BUG=1097816

Change-Id: I0beed33165e4e3b7245c5221ddc3f50bd95b0763
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2416256Reviewed-by: danakj <danakj@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#808408}