GitLab

Suspect the crash is because an animation observer of a child
layer deletes the parent/child when stopping the BOUNDS animation
in the Remove call.

Also changes a simillar situation in SwitchToLayer.

Bug: 1088432
Change-Id: Id9bacb230a9d0a6fa390ae3bc1a0410c983fb049
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2224031
Commit-Queue: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: Robert Flack <flackr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775267}