Add a few missing dirty bit cases. Discovered some of these while investigating Texture dirty bits. BUG=angleproject:1387 Change-Id: I8b170462bfd283e4b0f9d47b7f7ddbaa7957914d Reviewed-on: https://chromium-review.googlesource.com/648051 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>