Add stubbed out GrD3DOpsRenderPass class.

Change-Id: Ie50b15323df0a71c8d4276e3bc603061e469824d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/273465
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
5 files changed