[BlinkPropertyTrees] Shortcut AnimateLayers on main

These can cause animations to attempt to update elements which are no longer in
the property tree. It's all duplicate work to what will happen on CC and be
pushed back.

BUG=762717

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I92188f6a61b73274eb9ef1a4608585ae64e56683
Reviewed-on: https://chromium-review.googlesource.com/1091504
Commit-Queue: Peter Mayo <petermayo@chromium.org>
Reviewed-by: Majid Valipour <majidvp@chromium.org>
Reviewed-by: Robert Flack <flackr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568065}
2 files changed