External clients will need access to these classes once GrContext
goes away.
This is a purely mechanical CL.
Bug: skia:10441
Change-Id: I7ffeb29d88bcc0f012412fba911e8362d046e24a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/300206
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>