switch maskfilters to sk_sp

gm/circles.cpp

 /*
  * Copyright 2012 Intel Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "gm.h"
 #include "SkBlurDrawLooper.h"
 #include "SkBlurMask.h"
 #include "SkBlurMaskFilter.h"
@@ skipping 33 matching lines @@
         // AA
         SkPaint p;
         p.setAntiAlias(true);
         fPaints.push_back(p);
         }
 
         {
         // AA with mask filter
         SkPaint p;
         p.setAntiAlias(true);
-        SkMaskFilter* mf = SkBlurMaskFilter::Create(
+        p.setMaskFilter(SkBlurMaskFilter::Make(
                                kNormal_SkBlurStyle,
                                SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
-                               SkBlurMaskFilter::kHighQuality_BlurFlag);
-        p.setMaskFilter(mf)->unref();
+                               SkBlurMaskFilter::kHighQuality_BlurFlag));
         fPaints.push_back(p);
         }
 
         {
         // AA with radial shader
         SkPaint p;
         p.setAntiAlias(true);
         SkPoint center = SkPoint::Make(SkIntToScalar(40), SkIntToScalar(40));
         SkColor colors[] = { SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN };
         SkScalar pos[] = { 0, SK_ScalarHalf, SK_Scalar1 };
@@ skipping 132 matching lines @@
     SkTArray<SkPaint> fPaints;
     SkTArray<SkMatrix> fMatrices;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new CircleGM; }
 static GMRegistry reg(MyFactory);
 
 }