Update SkOffsetImageFilter to sk_sp

gm/filterfastbounds.cpp

 /*
  * Copyright 2014 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 "SkBlurImageFilter.h"
 #include "SkDropShadowImageFilter.h"
@@ skipping 132 matching lines @@
         add_paint(dsif, paints);
     }
 
     {
         SkAutoTUnref<SkImageFilter> bif(SkBlurImageFilter::Create(3, 3, source));
 
         add_paint(bif, paints);
     }
 
     {
-        SkAutoTUnref<SkImageFilter> oif(SkOffsetImageFilter::Create(15, 15, source));
+        sk_sp<SkImageFilter> oif(SkOffsetImageFilter::Make(15, 15,
+                                                           sk_ref_sp<SkImageFilter>(source)));
 
-        add_paint(oif, paints);
+        add_paint(oif.get(), paints);
     }
 }
 
 // This GM visualizes the fast bounds for various combinations of geometry
 // and image filter
 class ImageFilterFastBoundGM : public GM {
 public:
     ImageFilterFastBoundGM() {
         this->setBGColor(sk_tool_utils::color_to_565(0xFFCCCCCC));
     }
@@ skipping 161 matching lines @@
     }
 
 private:
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new ImageFilterFastBoundGM;)
 }