BUG=angleproject:884

Change-Id: Ic4d5bdc5b65ebcb8c57b960e84708e945db0276a
Reviewed-on: https://chromium-review.googlesource.com/272422Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Brandon Jones <bajones@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>