For now this is distinct from kRGBA_F16_SkColorType but treated the
same. Next steps are to see if we can keep it clamped to [0,1].
Switched a few switches away from default to exhaustive.
Took away any explicit SW clamps for now except the one we definitely
want in append_gamut_clamp_if_normalized().
Skip F16Norm in the DDL test because we can't yet distinguish it from
F16.
Change-Id: I021a864fe078e4fa4e2b399982e6c38350e10d74
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/196371
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
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