BUG=angleproject:892

Change-Id: I0406e26910f5a012ccb9e533af18e831522161b1
Reviewed-on: https://chromium-review.googlesource.com/269666Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/269827