switch patheffects over to sk_sp

include/effects/SkArcToPathEffect.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkArcToPathEffect_DEFINED
 #define SkArcToPathEffect_DEFINED
 
 #include "SkPathEffect.h"
 
 class SK_API SkArcToPathEffect : public SkPathEffect {
 public:
     /** radius must be > 0 to have an effect. It specifies the distance from each corner
         that should be "rounded".
     */
-    static SkPathEffect* Create(SkScalar radius) {
+    static sk_sp<SkPathEffect> Make(SkScalar radius) {
         if (radius <= 0) {
             return NULL;
         }
-        return new SkArcToPathEffect(radius);
+        return sk_sp<SkPathEffect>(new SkArcToPathEffect(radius));
     }
 
     bool filterPath(SkPath* dst, const SkPath& src, SkStrokeRec*, const SkRect*) const override;
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkArcToPathEffect)
 
 protected:
     explicit SkArcToPathEffect(SkScalar radius);
     void flatten(SkWriteBuffer&) const override;
 
 private:
     SkScalar fRadius;
 
     typedef SkPathEffect INHERITED;
 };
 
 #endif