Remove last two uses of SkGpuDevice's GrSurfaceDrawContext-based factory

Change-Id: Ib286933a1c2c82efbb87799016550086bcbc584f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/410817
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
12 files changed