Add isSingleComponent bool to getConstantColorComponent

src/effects/SkMorphologyImageFilter.cpp

Index: src/effects/SkMorphologyImageFilter.cpp
diff --git a/src/effects/SkMorphologyImageFilter.cpp b/src/effects/SkMorphologyImageFilter.cpp
index 397e43193e087c232e5dc3c765665b0d3f6e3ca9..8982ec4ae9b10ada3f52a16b3b4f7a2ae3f418a2 100644
--- a/src/effects/SkMorphologyImageFilter.cpp
+++ b/src/effects/SkMorphologyImageFilter.cpp
@@ -309,7 +309,6 @@ public:
     typedef GrGLMorphologyEffect GLProcessor;
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
-    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
 
 protected:
 
@@ -318,6 +317,9 @@ protected:
 private:
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
+    virtual void onGetConstantColorComponents(GrColor* color, uint32_t* validFlags,
+                                              bool* isSingleComponent) const SK_OVERRIDE;
+
     GrMorphologyEffect(GrTexture*, Direction, int radius, MorphologyType);
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
@@ -455,7 +457,8 @@ bool GrMorphologyEffect::onIsEqual(const GrProcessor& sBase) const {
             this->type() == s.type());
 }
 
-void GrMorphologyEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+void GrMorphologyEffect::onGetConstantColorComponents(GrColor* color, uint32_t* validFlags,
+                                                      bool* isSingleComponent) const {
     // This is valid because the color components of the result of the kernel all come
     // exactly from existing values in the source texture.
     this->updateConstantColorComponentsForModulation(color, validFlags);