BUG=angleproject:1249 This is a continuation of D3D dirty bit refactor for D3D9 performance enhancements Change-Id: Iedd7eb003981cac7f81a58560cb326760f01c06a Reviewed-on: https://chromium-review.googlesource.com/317313Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Tryjob-Request: Dian Xiang <dianx@google.com> Tested-by: Jamie Madill <jmadill@chromium.org>
