BUG=381413

Multisample textures can only be bound as both depth stencil
views and shader resource views at feature level 10_1 and above.
We don't need to bind textures as SRVs if they're multisample
depth targets, so we should avoid the SRV flag in that case.

Change-Id: I28ca98bdc4a86eb5442b39ea3cf2b42aa9216aab
Reviewed-on: https://chromium-review.googlesource.com/202921Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Shannon Woods <shannonwoods@chromium.org>