This entire API existed, but was unused (no longer connected to
drawVertices or runtime effects).
In theory, we could further simplify some of the matrix providers, but
more importantly - I have serious doubts about the correctness of
localToDeviceHitsPixelsCenters for most of them.
Change-Id: If5af182015dd96e5ed3353a117223e8dbbe17097
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/481683
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>