BUG=angleproject:1149

Change-Id: Ia808c0d411133d135eef8e90485ba346086f012c
Reviewed-on: https://chromium-review.googlesource.com/296964Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>