delete (unused) TransparentShader

include/effects/SkTransparentShader.h

-/*
- * Copyright 2006 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 SkTransparentShader_DEFINED
-#define SkTransparentShader_DEFINED
-
-#include "SkShader.h"
-
-class SK_API SkTransparentShader : public SkShader {
-public:
-    SkTransparentShader() {}
-
-    size_t contextSize() const override;
-
-    class TransparentShaderContext : public SkShader::Context {
-    public:
-        TransparentShaderContext(const SkTransparentShader& shader, const ContextRec&);
-        virtual ~TransparentShaderContext();
-
-        uint32_t getFlags() const override;
-        void shadeSpan(int x, int y, SkPMColor[], int count) override;
-        void shadeSpan16(int x, int y, uint16_t span[], int count) override;
-
-    private:
-        const SkBitmap* fDevice;
-
-        typedef SkShader::Context INHERITED;
-    };
-
-    SK_TO_STRING_OVERRIDE()
-    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTransparentShader)
-
-protected:
-    Context* onCreateContext(const ContextRec&, void* storage) const override;
-
-    // we don't need to flatten anything at all
-    void flatten(SkWriteBuffer&) const override {}
-
-private:
-    typedef SkShader INHERITED;
-};
-
-#endif