[graphite] Rein in over-generation for circular arcs and analytic blurs

This addresses some low hanging fruit wrt Precompilation over-generation.

The circular-arc and analytic-blur RenderSteps have pretty specialized use cases so breaking them out of the simple-draw case shouldn't over complicate the DrawTypeFlags.

Bug: b/358074434
Change-Id: I009f4a878245157849fd423f4897b0ba58fcdb43
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/962776
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
5 files changed