Add isSingleComponent bool to getConstantColorComponent

src/effects/gradients/SkGradientShader.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGradientShaderPriv.h"
 #include "SkLinearGradient.h"
 #include "SkRadialGradient.h"
@@ skipping 1199 matching lines @@
         return fTextureAccess.getTexture() == s.fTextureAccess.getTexture()  &&
             fTextureAccess.getParams().getTileModeX() ==
                 s.fTextureAccess.getParams().getTileModeX() &&
             this->useAtlas() == s.useAtlas() &&
             fCoordTransform.getMatrix().cheapEqualTo(s.fCoordTransform.getMatrix());
     }
 
     return false;
 }
 
-void GrGradientEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+void GrGradientEffect::onGetConstantColorComponents(GrColor* color, uint32_t* validFlags,
+                                                    bool* isSingleComponent) const {
     if (fIsOpaque && (kA_GrColorComponentFlag & *validFlags) && 0xff == GrColorUnpackA(*color)) {
         *validFlags = kA_GrColorComponentFlag;
     } else {
         *validFlags = 0;
     }
 }
 
 int GrGradientEffect::RandomGradientParams(SkRandom* random,
                                            SkColor colors[],
                                            SkScalar** stops,
@@ skipping 12 matching lines @@
             (*stops)[i] = stop;
             stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f;
         }
     }
     *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount));
 
     return outColors;
 }
 
 #endif