Delete unused code from SkColorSpace

src/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 38 matching lines @@
 
     SkColorLookUpTable(SkColorLookUpTable&& that)
         : fInputChannels(that.fInputChannels)
         , fOutputChannels(that.fOutputChannels)
         , fTable(std::move(that.fTable))
     {
         memcpy(fGridPoints, that.fGridPoints, kMaxChannels);
     }
 };
 
-struct SkPM4f;
-void SkApply3x3ToPM4f(const SkFloat3x3&, const SkPM4f src[], SkPM4f dst[], int count);
-
 class SkColorSpace : public SkRefCnt {
 public:
     enum Named {
         kUnknown_Named,
-        kDevice_Named,
         kSRGB_Named,
     };
 
     /**
      *  Return a colorspace instance, given a 3x3 transform from linear_RGB to D50_XYZ
      *  and the src-gamma, return a ColorSpace
      */
     static sk_sp<SkColorSpace> NewRGB(const SkFloat3x3& toXYZD50, const SkFloat3& gamma);
 
     static sk_sp<SkColorSpace> NewNamed(Named);
     static sk_sp<SkColorSpace> NewICC(const void*, size_t);
 
     SkFloat3 gamma() const { return fGamma; }
     SkFloat3x3 xyz() const { return fToXYZD50; }
     SkFloat3 xyzOffset() const { return fToXYZOffset; }
     Named named() const { return fNamed; }
     uint32_t uniqueID() const { return fUniqueID; }
 
-    enum Result {
-        kFailure_Result,
-        kIdentity_Result,
-        kNormal_Result,
-    };
-
-    /**
-     *  Given a src and dst colorspace, return the 3x3 matrix that will convert src_linear_RGB
-     *  values into dst_linear_RGB values.
-     */
-    static Result Concat(const SkColorSpace* src, const SkColorSpace* dst, SkFloat3x3* result);
-
-    static void Test();
-    void dump() const;
-
 private:
     SkColorSpace(const SkFloat3& gamma, const SkFloat3x3& toXYZ, Named);
 
     SkColorSpace(SkColorLookUpTable colorLUT, const SkFloat3& gamma, const SkFloat3x3& toXYZ,
                  const SkFloat3& toXYZOffset);
 
     const SkColorLookUpTable fColorLUT;
     const SkFloat3           fGamma;
     const SkFloat3x3         fToXYZD50;
     const SkFloat3           fToXYZOffset;
 
     const uint32_t           fUniqueID;
     const Named              fNamed;
 };
 
 #endif