switch maskfilters to sk_sp

gm/textbloblooper.cpp

 /*
  * Copyright 2013 Google 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 "Sk2DPathEffect.h"
@@ skipping 43 matching lines @@
     SkXfermode::Mode fMode;
     SkColor          fColor;
     SkPaint::Style   fStyle;
     SkScalar         fWidth;
     SkScalar         fOffset;
     SkScalar         fSkewX;
     bool             fEffect;
 };
 
 static void mask_filter(SkPaint* paint) {
-    SkMaskFilter* mf = SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
-                        SkBlurMask::ConvertRadiusToSigma(3.f));
-    paint->setMaskFilter(mf)->unref();
+    paint->setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle,
+                                                SkBlurMask::ConvertRadiusToSigma(3.f)));
 }
 
 static sk_sp<SkPathEffect> make_tile_effect() {
     SkMatrix m;
     m.setScale(1.f, 1.f);
 
     SkPath path;
     path.addCircle(0, 0, SkIntToScalar(5));
 
     return SkPath2DPathEffect::Make(m, path);
@@ skipping 172 matching lines @@
     SkAutoTUnref<const SkTextBlob> fBlob;
     SkTArray<sk_sp<SkDrawLooper>, true> fLoopers;
 
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new TextBlobLooperGM;)
 }