Add more DrawCallPerf offscreen configs. I thought these might have different performance characteristics when compared to the main configs. It's possible they would also need to forego using SwapBuffers to get different profiles. Right now perf is pretty similar to with the default FBO. Bug: angleproject:3117 Change-Id: Ic03b4ebd8c606af5121854565525e37e66f91435 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1650785 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>