[graphite] Add rasterization state methods to CommandBuffer

Bug: skia:12466
Change-Id: Iafd680901e10d1007a16da0112e41af4bf2f2703
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/472445
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
3 files changed