BUG=angleproject:970

Change-Id: I02caf1a5d15a8e32e68b63362e86e3a689dbdb5a
Reviewed-on: https://chromium-review.googlesource.com/293221Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>