BUG=angleproject:1639

Change-Id: I42da2acdb7c99116c4418a2f71d65d72d328d641
Reviewed-on: https://chromium-review.googlesource.com/428572
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>