GitLab

Bug caused by press while still animation, then shadow gets applied after
animation end. Fix this by canceling animation watching if press event.

Test: manual
Bug: 817436
Change-Id: Icd1677d4854db8fc6b5ec12c7c71d1a76e955ea6
Reviewed-on: https://chromium-review.googlesource.com/941721
Commit-Queue: Sammie Quon <sammiequon@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#540374}