Add isSingleComponent bool to getConstantColorComponent

src/effects/gradients/SkGradientShaderPriv.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGradientShaderPriv_DEFINED
 #define SkGradientShaderPriv_DEFINED
 
@@ skipping 324 matching lines @@
     GrGradientEffect(GrContext* ctx,
                      const SkGradientShaderBase& shader,
                      const SkMatrix& matrix,
                      SkShader::TileMode tileMode);
 
     virtual ~GrGradientEffect();
 
     bool useAtlas() const { return SkToBool(-1 != fRow); }
     SkScalar getYCoord() const { return fYCoord; };
 
-    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
-
     SkGradientShaderBase::GpuColorType getColorType() const { return fColorType; }
 
     enum PremulType {
         kBeforeInterp_PremulType,
         kAfterInterp_PremulType,
     };
 
     PremulType getPremulType() const { return fPremulType; }
 
     const SkColor* getColors(int pos) const {
@@ skipping 12 matching lines @@
         passed to the gradient factory rather than the array.
     */
     static const int kMaxRandomGradientColors = 4;
     static int RandomGradientParams(SkRandom* r,
                                     SkColor colors[kMaxRandomGradientColors],
                                     SkScalar** stops,
                                     SkShader::TileMode* tm);
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
+    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
+
     const GrCoordTransform& getCoordTransform() const { return fCoordTransform; }
 
 private:
     static const GrCoordSet kCoordSet = kLocal_GrCoordSet;
 
     GrCoordTransform fCoordTransform;
     GrTextureAccess fTextureAccess;
     SkScalar fYCoord;
     GrTextureStripAtlas* fAtlas;
     int fRow;
@@ skipping 77 matching lines @@
     GrGLProgramDataManager::UniformHandle fColorStartUni;
     GrGLProgramDataManager::UniformHandle fColorMidUni;
     GrGLProgramDataManager::UniformHandle fColorEndUni;
 
     typedef GrGLFragmentProcessor INHERITED;
 };
 
 #endif
 
 #endif