This makes GrCFResource a template class with similar semantics to sk_sp.
Change-Id: I9ae9988dac6b39477b16d65591ef6fff44903c36
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218376
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Mike Reed <reed@google.com>
