Revert of Add isSingleComponent bool to getConstantColorComponent

src/gpu/effects/GrConfigConversionEffect.h

Index: src/gpu/effects/GrConfigConversionEffect.h
diff --git a/src/gpu/effects/GrConfigConversionEffect.h b/src/gpu/effects/GrConfigConversionEffect.h
index aa2c87482e55891a765e1798a1be59d9a2589224..765e49b45ba05995fb765133c8a571e280071eb3 100644
--- a/src/gpu/effects/GrConfigConversionEffect.h
+++ b/src/gpu/effects/GrConfigConversionEffect.h
@@ -43,6 +43,8 @@
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     bool swapsRedAndBlue() const { return fSwapRedAndBlue; }
     PMConversion  pmConversion() const { return fPMConversion; }
 
@@ -63,8 +65,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     bool            fSwapRedAndBlue;
     PMConversion    fPMConversion;