BUG=angleproject:885

Change-Id: Ifb5818f185236c671cd7f20ed352edb887b49675
Reviewed-on: https://chromium-review.googlesource.com/258420Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Brandon Jones <bajones@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>