Revert of Add isSingleComponent bool to getConstantColorComponent

src/effects/SkMagnifierImageFilter.cpp

Index: src/effects/SkMagnifierImageFilter.cpp
diff --git a/src/effects/SkMagnifierImageFilter.cpp b/src/effects/SkMagnifierImageFilter.cpp
index d6a8e783b90981b10a9cfed341270dca7719dcc5..9d7b9183655bc09cbd1c471fe338a1ac06c04e3f 100644
--- a/src/effects/SkMagnifierImageFilter.cpp
+++ b/src/effects/SkMagnifierImageFilter.cpp
@@ -47,6 +47,8 @@
     static const char* Name() { return "Magnifier"; }
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     float x_offset() const { return fXOffset; }
     float y_offset() const { return fYOffset; }
     float x_inv_zoom() const { return fXInvZoom; }
@@ -73,8 +75,6 @@
         , fYInvInset(yInvInset) {}
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
-
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
@@ -227,9 +227,8 @@
             this->fYInvInset == s.fYInvInset);
 }
 
-void GrMagnifierEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    this->updateInvariantOutputForModulation(inout);
-    inout->fIsSingleComponent = false;
+void GrMagnifierEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    this->updateConstantColorComponentsForModulation(color, validFlags);
 }
 
 #endif