Revert "Feed all top-level GPU accessors through skgpu::BaseDevice"

This reverts commit 5de8b1950422d002f9c1a1ebdf545364d7d1dcfe.

Reason for revert: blocking Android roll

Original change's description:
> Feed all top-level GPU accessors through skgpu::BaseDevice
>
> This pulls the GPU-specific accessors off of SkCanvas and SkDevice - moving them all to skgpu::BaseDevice and SkCanvasPriv.
>
> This will allow us to more easily change the gpu class hierarchy (esp. changing GrSurfaceDrawContext to skgpu::v1:SurfaceDrawContext) w/o churning the public API.
>
> Bug: skia:11837
> Change-Id: I4e205255706680ac58ffe40f714884c2ee7ac799
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/431036
> Reviewed-by: Brian Osman <brianosman@google.com>
> Reviewed-by: Michael Ludwig <michaelludwig@google.com>
> Commit-Queue: Robert Phillips <robertphillips@google.com>

TBR=robertphillips@google.com,brianosman@google.com,michaelludwig@google.com

Change-Id: I8a015be4edbe21d63db09d5593af13cc89df4217
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:11837
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/431538
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
18 files changed