use Make instead of Create to return a shared shader

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 320 matching lines @@
                 pos[last - i] = SK_Scalar1 - tmp;
             }
         }
         if (pos) {
             if (desc.fCount & 1) {
                 pos[half] = SK_Scalar1 - pos[half];
             }
         }
     }
 
-    return SkGradientShader::CreateTwoPointConical(c1, r1, c2, r2, desc.fColors, desc.fPos,
-                                                   desc.fCount, desc.fTileMode, desc.fGradFlags,
-                                                   desc.fLocalMatrix);
+    return SkGradientShader::MakeTwoPointConical(c1, r1, c2, r2, desc.fColors, desc.fPos,
+                                                 desc.fCount, desc.fTileMode, desc.fGradFlags,
+                                                 desc.fLocalMatrix).release();
 }
 
 void SkTwoPointConicalGradient::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writePoint(fCenter1);
     buffer.writePoint(fCenter2);
     buffer.writeScalar(fRadius1);
     buffer.writeScalar(fRadius2);
     buffer.writeBool(fFlippedGrad);
 }
@@ skipping 34 matching lines @@
     str->appendScalar(fCenter2.fY);
     str->append(") radius2: ");
     str->appendScalar(fRadius2);
     str->append(" ");
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif