Revert "[graphite] Use SkSpan for YUVATextureProxies and YUVABackendTextures."

This reverts commit a6b737350f1724550558e41e186bfeeae16c930f.

Reason for revert: Chrome is using the old interface.

Original change's description:
> [graphite] Use SkSpan for YUVATextureProxies and YUVABackendTextures.
>
> This allows clients to use whatever array structure they like for
> their input data.
>
> Bug: b/285361134
> Change-Id: Ie804c36c727eaf85bd3c49d6da6553286d309db2
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/708393
> Reviewed-by: Florin Malita <fmalita@google.com>
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Commit-Queue: Jim Van Verth <jvanverth@google.com>

Bug: b/285361134
Change-Id: I17465cd80a5ab0deb4fca6d510de992798d2ddfa
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/710076
Owners-Override: Kevin Lubick <kjlubick@google.com>
Auto-Submit: Jim Van Verth <jvanverth@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
5 files changed