Decouple FileSystem and WebSQL callbacks from VoidCallback and it non-refcounted

Source/bindings/v8/Dictionary.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 78 matching lines @@
     bool get(const String&, RefPtr<SpeechRecognitionError>&) const;
     bool get(const String&, RefPtr<SpeechRecognitionResult>&) const;
     bool get(const String&, RefPtr<SpeechRecognitionResultList>&) const;
     bool get(const String&, RefPtr<MediaStream>&) const;
     bool get(const String&, RefPtr<EventTarget>&) const;
     bool get(const String&, HashSet<AtomicString>&) const;
     bool get(const String&, Dictionary&) const;
     bool get(const String&, Vector<String>&) const;
     bool get(const String&, ArrayValue&) const;
     bool get(const String&, RefPtr<DOMError>&) const;
-    bool get(const String&, RefPtr<VoidCallback>&) const;
+    bool get(const String&, OwnPtr<VoidCallback>&) const;
     bool get(const String&, v8::Local<v8::Value>&) const;
 
     class ConversionContext {
     public:
         ConversionContext(const String& interfaceName, const String& methodName, ExceptionState& exceptionState)
             : m_interfaceName(interfaceName)
             , m_methodName(methodName)
             , m_exceptionState(exceptionState)
             , m_dirty(true)
         {
@@ skipping 216 matching lines @@
             context.throwTypeError(ExceptionMessages::incorrectPropertyType(key, "does not have " + (context.typeName().isEmpty() ? String("the expected type.") : ("a " + context.typeName() + " type."))));
             return false;
         }
     }
     return true;
 }
 
 }
 
 #endif // Dictionary_h