Follow ANIMATOR_DURATION_SCALE in CompositorAnimator

Settings.Global.ANIMATOR_DURATION_SCALE is a system-wide setting
on Android. It can be used to slow down all animations to help
debugging. Before this CL, all animations except CompositorAnimator
can be slowed down, leading to a weird combination and mismatched
animation speed.

Bug: None
Change-Id: Idfc0cdc7cd8884bdd0f7caa6f15bdf711585feed
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1617915
Commit-Queue: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Reviewed-by: Donn Denman <donnd@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#662067}
4 files changed