switch maskfilters to sk_sp

samplecode/SampleBigBlur.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkBlurMask.h"
 #include "SkBlurMaskFilter.h"
 #include "SkCanvas.h"
@@ skipping 11 matching lines @@
             SampleCode::TitleR(evt, "BigBlur");
             return true;
         }
         return this->INHERITED::onQuery(evt);
     }
 
     virtual void onDrawContent(SkCanvas* canvas) {
         SkPaint paint;
         canvas->save();
         paint.setColor(SK_ColorBLUE);
-        SkMaskFilter* mf = SkBlurMaskFilter::Create(
+        paint.setMaskFilter(SkBlurMaskFilter::Make(
             kNormal_SkBlurStyle,
             SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(128)),
-            SkBlurMaskFilter::kHighQuality_BlurFlag);
-        paint.setMaskFilter(mf)->unref();
+            SkBlurMaskFilter::kHighQuality_BlurFlag));
         canvas->translate(200, 200);
         canvas->drawCircle(100, 100, 200, paint);
         canvas->restore();
     }
 
 private:
     typedef SkView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new BigBlurView; }
 static SkViewRegister reg(MyFactory);