switch maskfilters to sk_sp

samplecode/SampleSlides.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 444 matching lines @@
         canvas->restore();
 
         canvas->translate(0, SkIntToScalar(250));
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static void r0(SkLayerRasterizer::Builder* rastBuilder, SkPaint& p)
 {
-    p.setMaskFilter(SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
-                                             SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(3))))->unref();
+    p.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle,
+                                           SkBlurMask::ConvertRadiusToSigma(3)));
     rastBuilder->addLayer(p, SkIntToScalar(3), SkIntToScalar(3));
 
     p.setMaskFilter(nullptr);
     p.setStyle(SkPaint::kStroke_Style);
     p.setStrokeWidth(SK_Scalar1);
     rastBuilder->addLayer(p);
 
     p.setAlpha(0x11);
     p.setStyle(SkPaint::kFill_Style);
     p.setXfermodeMode(SkXfermode::kSrc_Mode);
@@ skipping 232 matching lines @@
     }
 
 private:
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new SlideView; }
 static SkViewRegister reg(MyFactory);