Revert of Add isSingleComponent bool to getConstantColorComponent

src/gpu/effects/GrYUVtoRGBEffect.cpp

Index: src/gpu/effects/GrYUVtoRGBEffect.cpp
diff --git a/src/gpu/effects/GrYUVtoRGBEffect.cpp b/src/gpu/effects/GrYUVtoRGBEffect.cpp
index cdbe654edec2e9e2bb3f76f4d383592cb7180d57..436106c991e388731391885ca98ef68fb1925e54 100644
--- a/src/gpu/effects/GrYUVtoRGBEffect.cpp
+++ b/src/gpu/effects/GrYUVtoRGBEffect.cpp
@@ -26,6 +26,13 @@
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE {
         return GrTBackendFragmentProcessorFactory<YUVtoRGBEffect>::getInstance();
+    }
+
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        // YUV is opaque
+        *color = 0xFF;
+        *validFlags = kA_GrColorComponentFlag;
     }
 
     SkYUVColorSpace getColorSpace() const {
@@ -110,13 +117,6 @@
                fColorSpace == s.getColorSpace();
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        // YUV is opaque
-        inout->fColor = 0xFF;
-        inout->fValidFlags = kA_GrColorComponentFlag;
-        inout->fIsSingleComponent = false;
-    }
-
     GrCoordTransform fCoordTransform;
     GrTextureAccess fYAccess;
     GrTextureAccess fUAccess;