Revert of Add isSingleComponent bool to getConstantColorComponent

src/gpu/effects/GrSimpleTextureEffect.cpp

Index: src/gpu/effects/GrSimpleTextureEffect.cpp
diff --git a/src/gpu/effects/GrSimpleTextureEffect.cpp b/src/gpu/effects/GrSimpleTextureEffect.cpp
index a7707da8af089ad71340a2cb926da0f71f0a4304..6743ddbbe1119d5647ed9104077120c234515fb4 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.cpp
+++ b/src/gpu/effects/GrSimpleTextureEffect.cpp
@@ -41,9 +41,8 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
-void GrSimpleTextureEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    this->updateInvariantOutputForModulation(inout);
-    inout->fIsSingleComponent = false;
+void GrSimpleTextureEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    this->updateConstantColorComponentsForModulation(color, validFlags);
 }
 
 const GrBackendFragmentProcessorFactory& GrSimpleTextureEffect::getFactory() const {