BUG=angleproject:1249 This is a continuation of the D3D dirty bit refactor for D3D9 for performance enhancements Change-Id: I8690d47999b73483c47f4994dc46cd97f4ced63d Reviewed-on: https://chromium-review.googlesource.com/316449 Tryjob-Request: Dian Xiang <dianx@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Dian Xiang <dianx@google.com>
