This benchmark will attempt to reproduce the slowdown we see
in D3D11 on the turbulenz GPU particles demo.

BUG=angle:705

Change-Id: I9c4c2f09d4282feae30f448fd374cdbb6bceae9b
Reviewed-on: https://chromium-review.googlesource.com/216467Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>