BUG=angleproject:1309

Change-Id: I7817444c3ea56f932fe769a860f4a70b29262019
Reviewed-on: https://chromium-review.googlesource.com/483427Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>