Make sure SkDrawLooper objects can only be allocated on the heap.

include/effects/SkBlurDrawLooper.h

 /*
  * Copyright 2008 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 SkBlurDrawLooper_DEFINED
 #define SkBlurDrawLooper_DEFINED
@@ skipping 17 matching lines @@
             The blur layer's dx/dy/radius aren't affected by the canvas
             transform.
         */
         kIgnoreTransform_BlurFlag   = 0x01,
         kOverrideColor_BlurFlag     = 0x02,
         kHighQuality_BlurFlag       = 0x04,
         /** mask for all blur flags */
         kAll_BlurFlag               = 0x07
     };
 
-    SkBlurDrawLooper(SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy,
-                     uint32_t flags = kNone_BlurFlag);
+    static SkBlurDrawLooper* Create(SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy,
+                                    uint32_t flags = kNone_BlurFlag) {
+        return SkNEW_ARGS(SkBlurDrawLooper, (color, sigma, dx, dy, flags));
+    }
 
-//    SK_ATTR_DEPRECATED("use sigma version")
+#ifdef SK_SUPPORT_LEGACY_BLURDRAWLOOPERCONSTRUCTORS
     SkBlurDrawLooper(SkScalar radius, SkScalar dx, SkScalar dy, SkColor color,
                      uint32_t flags = kNone_BlurFlag);
+#endif
+
     virtual ~SkBlurDrawLooper();
 
     virtual SkDrawLooper::Context* createContext(SkCanvas*, void* storage) const SK_OVERRIDE;
 
     virtual size_t contextSize() const SK_OVERRIDE { return sizeof(BlurDrawLooperContext); }
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurDrawLooper)
 
 protected:
+    SkBlurDrawLooper(SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy,
+                     uint32_t flags);
+
     SkBlurDrawLooper(SkReadBuffer&);
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
 private:
     SkMaskFilter*   fBlur;
     SkColorFilter*  fColorFilter;
     SkScalar        fDx, fDy;
     SkColor         fBlurColor;
     uint32_t        fBlurFlags;
 
@@ skipping 13 matching lines @@
         const SkBlurDrawLooper* fLooper;
         State fState;
     };
 
     void init(SkScalar sigma, SkScalar dx, SkScalar dy, SkColor color, uint32_t flags);
 
     typedef SkDrawLooper INHERITED;
 };
 
 #endif