Switch to skcms-based factories and getters in SkColorSpace

Test: Mechanical substitution, still builds.
Change-Id: I877e4edd61e81279830ffbbcfea18d721abf6943
diff --git a/cmds/screencap/screencap.cpp b/cmds/screencap/screencap.cpp
index 8fa2980..3d74f8b 100644
--- a/cmds/screencap/screencap.cpp
+++ b/cmds/screencap/screencap.cpp
@@ -81,8 +81,7 @@
         case ui::Dataspace::V0_SRGB:
             return SkColorSpace::MakeSRGB();
         case ui::Dataspace::DISPLAY_P3:
-            return SkColorSpace::MakeRGB(
-                    SkColorSpace::kSRGB_RenderTargetGamma, SkColorSpace::kDCIP3_D65_Gamut);
+            return SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, SkNamedGamut::kDCIP3);
         default:
             return nullptr;
     }