BUG=angleproject:1249 This is a continuation of D3D dirty bit refactor for D3D9 performance enhancements Change-Id: I480bb95414a1baf71e7768a1704b34ae55244ed1 Reviewed-on: https://chromium-review.googlesource.com/316917Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Dian Xiang <dianx@google.com>
