Add isSingleComponent bool to getConstantColorComponent

src/gpu/effects/GrConfigConversionEffect.cpp

Index: src/gpu/effects/GrConfigConversionEffect.cpp
diff --git a/src/gpu/effects/GrConfigConversionEffect.cpp b/src/gpu/effects/GrConfigConversionEffect.cpp
index 3042d86f032b552e3a2e3fb5f4b973545fc5567b..f60be2a97009f4b8537f92556df04f753510c682 100644
--- a/src/gpu/effects/GrConfigConversionEffect.cpp
+++ b/src/gpu/effects/GrConfigConversionEffect.cpp
@@ -126,9 +126,9 @@ bool GrConfigConversionEffect::onIsEqual(const GrProcessor& s) const {
            other.fPMConversion == fPMConversion;
 }
 
-void GrConfigConversionEffect::getConstantColorComponents(GrColor* color,
-                                                          uint32_t* validFlags) const {
-    this->updateConstantColorComponentsForModulation(color, validFlags);
+void GrConfigConversionEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
+    this->updateInvariantOutputForModulation(inout);
+    inout->fIsSingleComponent = false;
 }
 
 ///////////////////////////////////////////////////////////////////////////////