Rename NVPR batch->op and sk_sp'ify

Change-Id: I5934e189f72cbc9c1f306c719b4d6e3f5178a046
Reviewed-on: https://skia-review.googlesource.com/6101
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
10 files changed