BUG=angleproject:1049

Change-Id: Ib5076380c692f4fa94921692baa7da14440556d1
Reviewed-on: https://chromium-review.googlesource.com/282386Tested-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>