change all factories to return their base-class

include/effects/SkCornerPathEffect.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCornerPathEffect_DEFINED
 #define SkCornerPathEffect_DEFINED
 
 #include "SkPathEffect.h"
 
 /** \class SkCornerPathEffect
 
     SkCornerPathEffect is a subclass of SkPathEffect that can turn sharp corners
     into various treatments (e.g. rounded corners)
 */
 class SK_API SkCornerPathEffect : public SkPathEffect {
 public:
     /** radius must be > 0 to have an effect. It specifies the distance from each corner
         that should be "rounded".
     */
-    static SkCornerPathEffect* Create(SkScalar radius) { return new SkCornerPathEffect(radius); }
-    virtual ~SkCornerPathEffect();
+    static SkPathEffect* Create(SkScalar radius) { return new SkCornerPathEffect(radius); }
 
     virtual bool filterPath(SkPath* dst, const SkPath& src,
                             SkStrokeRec*, const SkRect*) const override;
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkCornerPathEffect)
 
 #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
     bool exposedInAndroidJavaAPI() const override { return true; }
 #endif
 
 protected:
+    virtual ~SkCornerPathEffect();
+
     explicit SkCornerPathEffect(SkScalar radius);
     void flatten(SkWriteBuffer&) const override;
 
 private:
     SkScalar    fRadius;
 
     typedef SkPathEffect INHERITED;
 };
 
 #endif