GitLab

This CL introduces a new BoundsChangeAnimationType for
ClientControlledState which will animate the window bounds for a
specified duration.

Bug: b/115291749
Bug: 841886
Test: Tested with local PIP prototype - applies animation.
Change-Id: I8eda8b2131b8d3f679ade5cfbe64d7378efd6881
Reviewed-on: https://chromium-review.googlesource.com/c/1218385
Commit-Queue: Eliot Courtney <edcourtney@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#599132}