GitLab

BUG=823634
BUG=b/74621390
TEST=Manual tests with WM test app. Exo unit tests pass.

Change-Id: I0e0595fc62a50498790fd99144b547a88d1d9ba6
Reviewed-on: https://chromium-review.googlesource.com/996401
Commit-Queue: Garfield Tan <xutan@chromium.org>
Reviewed-by: David Reveman <reveman@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550748}