Reland "hash tf, and whole colorspace"

This is a reland of 58887bc3c18670276044664dc4ad190ee636417a

Original change's description:
> hash tf, and whole colorspace
> 
> Change-Id: I088124ead162d369c5c9f8bdd3fc0a39b2b3de46
> Reviewed-on: https://skia-review.googlesource.com/c/159486
> Commit-Queue: Mike Klein <mtklein@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>

Change-Id: Idec6b6817f7a2136083caecd20c35e1eb9f2f388
Reviewed-on: https://skia-review.googlesource.com/c/159622
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
3 files changed