BUG=angleproject:1136

Change-Id: I8b84b845da09f60bfd5e8f400da47d759f0d8f1a
Reviewed-on: https://chromium-review.googlesource.com/295234Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>