BUG=angleproject:1633

Change-Id: If8273747ade1cd3530b96006f2445e1dce0ccf00
Reviewed-on: https://chromium-review.googlesource.com/413231Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>