GitLab

BUG=b:62276007
TEST=build flash locally, see animation as spec

Change-Id: I5542b68e084fe465c2f8b424b521c8faef51f686
Reviewed-on: https://chromium-review.googlesource.com/585245
Commit-Queue: Xiaohui Chen <xiaohuic@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490447}