Revert of Add constant color GrFP.

include/gpu/effects/GrConstColorProcessor.h

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef GrColorProcessor_DEFINED
-#define GrColorProcessor_DEFINED
-
-#include "GrFragmentProcessor.h"
-
-class GrInvariantOutput;
-
-/**
- * This is a simple GrFragmentProcessor that outputs a constant color. It may do one of the
- * following with its input color: ignore it, or multiply it by the constant color, multiply its
- * alpha by the constant color and ignore the input color's r, g, and b.
- */
-class GrConstColorProcessor : public GrFragmentProcessor {
-public:
-    enum InputMode {
-        kIgnore_InputMode,
-        kModulateRGBA_InputMode,
-        kModulateA_InputMode,
-
-        kLastInputMode = kModulateA_InputMode
-    };
-    static const int kInputModeCnt = kLastInputMode + 1;
-
-    static GrFragmentProcessor* Create(GrColor color, InputMode mode) {
-        return SkNEW_ARGS(GrConstColorProcessor, (color, mode));
-    }
-
-    ~GrConstColorProcessor() override {}
-
-    const char* name() const override { return "Color"; }
-
-    void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const override;
-
-    GrGLFragmentProcessor* createGLInstance() const override;
-
-    GrColor color() const { return fColor; }
-
-    InputMode inputMode() const { return fMode; }
-
-private:
-    GrConstColorProcessor(GrColor color, InputMode mode) : fColor(color), fMode(mode) {
-        this->initClassID<GrConstColorProcessor>();
-    }
-
-    bool onIsEqual(const GrFragmentProcessor&) const override;
-
-    void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
-
-    GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
-
-    GrColor     fColor;
-    InputMode   fMode;
-
-    typedef GrFragmentProcessor INHERITED;
-};
-
-#endif