Reland "Add SkColorSpace factory from 3x3 row-major gamut and transfer function"

Moved named common transfer functions and gamuts to constexpr values in
SkColorSpace.h, in SkNamedTransferFn and SkNamedGamut namespaces.

Converted nearly all SkColorSpace::MakeRGB calls within Skia to use the
new factory with the named values. Multiple clients want a way to
extract named transfer function and gamut - this still doesn't provide
that, but this may be a better path forward for honestly advertising how
SkColorSpace works internally.

Originally landed as:
https://skia.googlesource.com/skia/+/a9549ab31630fc244094e6f1692371cbaf87f666

Re-landing with a new serialization format, but maintaining ability to
load old serialized color spaces, for SKP compatibility.

Bug: skia:
Change-Id: Ib84a6e1cd5d7d9816175773fdbaff2ca32658667
Reviewed-on: https://skia-review.googlesource.com/c/181176
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
diff --git a/tests/ToSRGBColorFilter.cpp b/tests/ToSRGBColorFilter.cpp
index 01c5673..519ffb8 100644
--- a/tests/ToSRGBColorFilter.cpp
+++ b/tests/ToSRGBColorFilter.cpp
@@ -22,8 +22,7 @@
     REPORTER_ASSERT(r, nullptr == SkToSRGBColorFilter::Make(nullptr));
 
     // Here's a realistic conversion.
-    auto dci_p3 = SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma,
-                                        SkColorSpace::kDCIP3_D65_Gamut);
+    auto dci_p3 = SkColorSpace::MakeRGB(SkNamedTransferFn::kLinear, SkNamedGamut::kDCIP3);
     REPORTER_ASSERT(r, nullptr != SkToSRGBColorFilter::Make(dci_p3));
 
 }