BUG=angleproject:883

Change-Id: I721c198f33caa18ec04899d6323faa9dbd4aa100
Reviewed-on: https://chromium-review.googlesource.com/266035Reviewed-by: Brandon Jones <bajones@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>