BUG=angleproject:197

Change-Id: Ia71f4063fa13c72a3a8bd41ec8fe01a762543796
Reviewed-on: https://chromium-review.googlesource.com/313468Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>