BUG=angleproject:883

Change-Id: I903090c1a7ba90bd479ad8d24f943672eb51054e
Reviewed-on: https://chromium-review.googlesource.com/266033Reviewed-by: Brandon Jones <bajones@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>