BUG=angleproject:TBD

Change-Id: Icb19a685290f4313ad567391cab5152eda91a346
Reviewed-on: https://chromium-review.googlesource.com/544545Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Zhenyao Mo <zmo@chromium.org>