Add isSingleComponent bool to getConstantColorComponent

src/gpu/effects/GrDistanceFieldTextureEffect.cpp

Index: src/gpu/effects/GrDistanceFieldTextureEffect.cpp
diff --git a/src/gpu/effects/GrDistanceFieldTextureEffect.cpp b/src/gpu/effects/GrDistanceFieldTextureEffect.cpp
index d5d334805c105eb56012bf8729353df9b1b99655..4561835a230a282875ab13e940090a8d0a4d0680 100755
--- a/src/gpu/effects/GrDistanceFieldTextureEffect.cpp
+++ b/src/gpu/effects/GrDistanceFieldTextureEffect.cpp
@@ -206,8 +206,9 @@ bool GrDistanceFieldTextureEffect::onIsEqual(const GrProcessor& other) const {
            fFlags == cte.fFlags;
 }
 
-void GrDistanceFieldTextureEffect::getConstantColorComponents(GrColor* color,
-                                                             uint32_t* validFlags) const {
+void GrDistanceFieldTextureEffect::onGetConstantColorComponents(GrColor* color,
+                                                                uint32_t* validFlags,
+                                                                bool* isSingleComponent) const {
     if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) &&
         GrPixelConfigIsOpaque(this->texture(0)->config())) {
         *validFlags = kA_GrColorComponentFlag;
@@ -476,8 +477,9 @@ bool GrDistanceFieldLCDTextureEffect::onIsEqual(const GrProcessor& other) const
             fFlags == cte.fFlags);
 }
 
-void GrDistanceFieldLCDTextureEffect::getConstantColorComponents(GrColor* color,
-                                                                 uint32_t* validFlags) const {
+void GrDistanceFieldLCDTextureEffect::onGetConstantColorComponents(GrColor* color,
+                                                                   uint32_t* validFlags,
+                                                                   bool *isSingleComponent) const {
     if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) &&
         GrPixelConfigIsOpaque(this->texture(0)->config())) {
         *validFlags = kA_GrColorComponentFlag;