Reland "Stop conflating F16 with linear gamma"

This reverts commit 5f7b5e3624dcb055acc64fcf90c513408d1789ed.

Reason for revert: Codec CL has re-landed.

Original change's description:
> Revert "Stop conflating F16 with linear gamma"
> 
> This reverts commit d1589c7213d4a23c7c5c352f70d753eb7f07518d.
> 
> Reason for revert: Depends on skcms CL that's been reverted.
> 
> Original change's description:
> > Stop conflating F16 with linear gamma
> > 
> > Note to self: I debugged this, realized that the codecs
> > need to handle A2B -> XYZ, then realized that I just need
> > to wait for https://skia-review.googlesource.com/c/skia/+/136062
> > 
> > Bug: skia:
> > Change-Id: I594c22076feb3700b8a40c471a541fef5ff4e13e
> > Reviewed-on: https://skia-review.googlesource.com/137587
> > Commit-Queue: Brian Osman <brianosman@google.com>
> > Reviewed-by: Mike Klein <mtklein@google.com>
> 
> TBR=mtklein@google.com,brianosman@google.com
> 
> Change-Id: I6dca583697c8efd2563d30cb7ab9ef505b6903ae
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:
> Reviewed-on: https://skia-review.googlesource.com/148860
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>

TBR=mtklein@google.com,brianosman@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: skia:
Change-Id: Iee66531049843758e7ed4130b99d8df6a553d805
Reviewed-on: https://skia-review.googlesource.com/149700
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
8 files changed