BUG=angleproject:1149

Change-Id: I641693e67bf35733a591107fdd3812d0badd17f2
Reviewed-on: https://chromium-review.googlesource.com/297083Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>