Remove nearly all use of SkColorSpaceTransferFn

Most interfaces had migrated to skcms_TransferFunction. Having both was
awkward in several places, so this (almost) finishes the migration. Some
clients are calling SkICC::WriteToICC, so that's left intact. After this
CL, those clients can switch to using SkWriteICCProfile directly, and
WriteToICC can be deleted.

Bug: skia:
Change-Id: I46ebaeb1f5b20bf0c620e8a620e73ee323a1de31
Reviewed-on: https://skia-review.googlesource.com/c/186541
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
12 files changed