Replace GrExtractAlphaFragmentProcessor with DstIn compose processor

src/effects/gradients/SkTwoPointConicalGradient.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTwoPointConicalGradient.h"
 #include "SkTwoPointConicalGradient_gpu.h"
 
@@ skipping 341 matching lines @@
     buffer.writePoint(fCenter1);
     buffer.writePoint(fCenter2);
     buffer.writeScalar(fRadius1);
     buffer.writeScalar(fRadius2);
     buffer.writeBool(fFlippedGrad);
 }
 
 #if SK_SUPPORT_GPU
 
 #include "SkGr.h"
-#include "effects/GrExtractAlphaFragmentProcessor.h"
 
 const GrFragmentProcessor* SkTwoPointConicalGradient::asFragmentProcessor(
                                                   GrContext* context,
                                                   const SkMatrix& viewM,
                                                   const SkMatrix* localMatrix,
                                                   SkFilterQuality,
                                                   GrProcessorDataManager* procDataManager) const {
     SkASSERT(context);
     SkASSERT(fPtsToUnit.isIdentity());
     SkAutoTUnref<const GrFragmentProcessor> inner(
         Gr2PtConicalGradientEffect::Create(context, procDataManager, *this, fTileMode,
                                             localMatrix));
-    return GrExtractAlphaFragmentProcessor::Create(inner);
+    return GrFragmentProcessor::MulOuputByInputAlpha(inner);
 }
 
 #endif
 
 #ifndef SK_IGNORE_TO_STRING
 void SkTwoPointConicalGradient::toString(SkString* str) const {
     str->append("SkTwoPointConicalGradient: (");
 
     str->append("center1: (");
     str->appendScalar(fCenter1.fX);
     str->append(", ");
     str->appendScalar(fCenter1.fY);
     str->append(") radius1: ");
     str->appendScalar(fRadius1);
     str->append(" ");
 
     str->append("center2: (");
     str->appendScalar(fCenter2.fX);
     str->append(", ");
     str->appendScalar(fCenter2.fY);
     str->append(") radius2: ");
     str->appendScalar(fRadius2);
     str->append(" ");
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif