BUG=angleproject:892

Change-Id: I9922046fc9e4d82d7034405f5952263f982c6529
Reviewed-on: https://chromium-review.googlesource.com/278159Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>