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This Cl replaces static images with animations.

Bug: 852038
Change-Id: Id58f69e4275231dc4b6491358d10a343f529fc2f
Reviewed-on: https://chromium-review.googlesource.com/1153832
Commit-Queue: Alexander Alekseev <alemate@chromium.org>
Reviewed-by: Wenzhao (Colin) Zang <wzang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578882}