(Almost) no one needs to know about SkPixelRef

Bug: skia:
Change-Id: I5c0304cf75f938b20720eaffd2349036da965190
Reviewed-on: https://skia-review.googlesource.com/c/163890
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
15 files changed