Revert of Support Float32 output from SkColorSpaceXform

src/gpu/GrDrawContext.cpp

Index: src/gpu/GrDrawContext.cpp
diff --git a/src/gpu/GrDrawContext.cpp b/src/gpu/GrDrawContext.cpp
index 35c53eda0edf3688a576efcef7d9b62ccffaf341..e9a9619da587742237d7e8b9e007ff681916fefb 100644
--- a/src/gpu/GrDrawContext.cpp
+++ b/src/gpu/GrDrawContext.cpp
@@ -37,7 +37,6 @@
 
 #include "../private/GrAuditTrail.h"
 
-#include "SkColorSpaceXform.h"
 #include "SkGr.h"
 #include "SkLatticeIter.h"
 #include "SkMatrixPriv.h"
@@ -97,7 +96,7 @@
     if (fColorSpace) {
         // sRGB sources are very common (SkColor, etc...), so we cache that gamut transformation
         auto srgbColorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
-        fColorXformFromSRGB = SkColorSpaceXform::New(srgbColorSpace, fColorSpace);
+        fColorXformFromSRGB = GrColorSpaceXform::Make(srgbColorSpace.get(), fColorSpace.get());
     }
     SkDEBUGCODE(this->validate();)
 }