base

Get animation update timing for AVD

The goal for this change is to get the timing for animation update. Since
AnimatorSet does not support update listeners, we have to go with the a different
approach, which sets up a value animator that runs between the start and end of
the AnimatorSet. We can then get the animation update timing from the ValueAnimator.

Bug: 26329675
Change-Id: Ibe7fce81eb6da5e05c87a732c1d3bc904b4e5e6f
(cherry picked from commit I378a0964da8f7090f65f6b56275a302e30668835)