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/src/codec/SkAndroidCodec.cpp b/src/codec/SkAndroidCodec.cpp
index 581640f..d741d6d 100644
--- a/src/codec/SkAndroidCodec.cpp
+++ b/src/codec/SkAndroidCodec.cpp
@@ -164,9 +164,8 @@
     switch (outputColorType) {
         case kRGBA_8888_SkColorType:
         case kBGRA_8888_SkColorType: {
-            // If |prefColorSpace| is supported, choose it.
-            SkColorSpaceTransferFn fn;
-            if (prefColorSpace && prefColorSpace->isNumericalTransferFn(&fn)) {
+            // If |prefColorSpace| is supplied, choose it.
+            if (prefColorSpace) {
                 return prefColorSpace;
             }
 
@@ -179,8 +178,7 @@
                 }
 
                 if (is_wide_gamut(*encodedProfile)) {
-                    return SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
-                                                 SkColorSpace::kDCIP3_D65_Gamut);
+                    return SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, SkNamedGamut::kDCIP3);
                 }
             }