Move toXYZD50() to SkColorSpace_Base

include/core/SkColorSpace.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkColorSpace_DEFINED
 #define SkColorSpace_DEFINED
 
@@ skipping 52 matching lines @@
      *  Create an SkColorSpace from an ICC profile.
      */
     static sk_sp<SkColorSpace> NewICC(const void*, size_t);
 
     /**
      *  Create an SkColorSpace with the same gamut as this color space, but with linear gamma.
      */
     sk_sp<SkColorSpace> makeLinearGamma();
 
     /**
-     *  Returns the matrix used to transform src gamut to XYZ D50.
-     */
-    const SkMatrix44& toXYZD50() const { return fToXYZD50; }
-
-    /**
      *  Returns true if the color space gamma is near enough to be approximated as sRGB.
      */
     bool gammaCloseToSRGB() const;
 
     /**
      *  Returns true if the color space gamma is linear.
      */
     bool gammaIsLinear() const;
 
     /**
@@ skipping 10 matching lines @@
 
     static sk_sp<SkColorSpace> Deserialize(const void* data, size_t length);
 
     /**
      *  If both are null, we return true.  If one is null and the other is not, we return false.
      *  If both are non-null, we do a deeper compare.
      */
     static bool Equals(const SkColorSpace* src, const SkColorSpace* dst);
 
 protected:
-    SkColorSpace(const SkMatrix44& toXYZD50);
-
-    const SkMatrix44 fToXYZD50;
+    SkColorSpace() {}
 };
 
 #endif