Don't have GrVk*CommandBuffer derive from GrVkResource.

The goal here is to help reduce a lot of the refs and unrefs that happen
during each of our draws.

Change-Id: I81b45a2259acf24b73d1a01f8574a48c0adae9fa
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/230741
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
10 files changed