BUG=angleproject:1025

Change-Id: If79046f9f81ad20c5f2f7296245b0cb74a4102aa
Reviewed-on: https://chromium-review.googlesource.com/296680Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>