This will replace a similar buggy test that will be removed from Chromium.

BUG=angleproject:913
TEST=angle_unittests

Change-Id: If782004e764316ca003effbea883640ecdb30dda
Reviewed-on: https://chromium-review.googlesource.com/275397Tested-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>