BUG=angleproject:1249

Continuation of refactor for d3d9 dirty bit refactor for performance
enhancements

Change-Id: I414cc9bfbdc806d870a9f208895f411edf5adcf3
Reviewed-on: https://chromium-review.googlesource.com/316515Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Dian Xiang <dianx@google.com>