BUG=angleproject:1397

Change-Id: Icdfc99eefcfad730ec887b82ec0758a6d6c0b9a7
Reviewed-on: https://chromium-review.googlesource.com/348064Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>