BUG=angle:858

Change-Id: I0fe3baf811d561584f7d24f6da665c6934e32b2a
Reviewed-on: https://chromium-review.googlesource.com/239272Tested-by: Austin Kinross <aukinros@microsoft.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>