[Graphite] Add primitive blender and skip color transform bool to PaintParams

Bug: skia:13352 b/238758223
Change-Id: Ic389e87326dc9280f2e2f628e246331fe3c51296
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/566560
Commit-Queue: Nicolette Prevost <nicolettep@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
4 files changed