BUG=angleproject:2052

Change-Id: Ib6f55be3d71d083a87e845447f174a55413c8a2f
Reviewed-on: https://chromium-review.googlesource.com/659398Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>