Reason for revert:
Lots of Android redness
Original issue's description:
> Consolidate GPU buffer implementations
>
> Consolidates all the different buffer implementations into a single
> GrBuffer class. This will allow us to add new buffer types, use DSA in
> OpenGL, track buffer bindings by unique ID, cache buffers without
> respect to the type of data they have been used for previously, etc.
> This change is strictly a refactor; it introduces no change in
> functionality.
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1825393002
>
> Committed: https://skia.googlesource.com/skia/+/8b1bff29675afd25843439eade634a57f68fe16fTBR=bsalomon@google.com,egdaniel@google.com,jvanverth@google.com,cdalton@nvidia.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:
Review URL: https://codereview.chromium.org/1831133004
f8c3ba40cf