BUG=angleproject:891

Change-Id: I06ad3b25914bc9ec4541b38a9b160983b7dcb720
Reviewed-on: https://chromium-review.googlesource.com/299850Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>