BUG=angleproject:681

Change-Id: Ia4bf2b81134a922265ca762f33ac85d9ddbf1a7c
Reviewed-on: https://chromium-review.googlesource.com/261890Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Brandon Jones <bajones@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>