Remove unitmappers header.

include/utils/SkUnitMappers.h

-
-/*
- * Copyright 2008 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#ifndef SkUnitMappers_DEFINED
-#define SkUnitMappers_DEFINED
-
-#include "SkUnitMapper.h"
-
-/** This discretizes the range [0...1) into N discret values.
-*/
-class SkDiscreteMapper : public SkUnitMapper {
-public:
-    SkDiscreteMapper(int segments);
-    // override from SkUnitMapper
-    virtual uint16_t mapUnit16(uint16_t x);
-
-    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiscreteMapper)
-
-protected:
-    SkDiscreteMapper(SkReadBuffer& );
-    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
-
-private:
-    int     fSegments;
-    int32_t fScale;    // computed from fSegments
-
-    typedef SkUnitMapper INHERITED;
-};
-
-/** This returns cos(x), to simulate lighting a sphere, where 0 maps to the
-    center of the sphere, and 1 maps to the edge.
-*/
-class SkCosineMapper : public SkUnitMapper {
-public:
-    SkCosineMapper() {}
-    // override from SkUnitMapper
-    virtual uint16_t mapUnit16(uint16_t x);
-
-    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkCosineMapper)
-
-protected:
-    SkCosineMapper(SkReadBuffer&);
-
-private:
-
-    typedef SkUnitMapper INHERITED;
-};
-
-#endif