BUG=angleproject:2052

Change-Id: I1cbf2adc09c82b9de68785265def9361eff418b3
Reviewed-on: https://chromium-review.googlesource.com/659236Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>