Disable the emulateTinyStencilTextures workaround in FL 10.0. UpdateSubresource and CopySubresource cannot copy to depth stencil textures in feature level 10.0. BUG=angleproject:1572 Change-Id: Ic9f8cbfb2c69de8502da7df34f1c5935144a9387 Reviewed-on: https://chromium-review.googlesource.com/402554 Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>