Remove nop ScriptWrappable::init calls

sky/engine/core/dom/MutationObserver.cpp

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 47 matching lines @@
 PassRefPtr<MutationObserver> MutationObserver::create(PassOwnPtr<MutationCallback> callback)
 {
     ASSERT(isMainThread());
     return adoptRef(new MutationObserver(callback));
 }
 
 MutationObserver::MutationObserver(PassOwnPtr<MutationCallback> callback)
     : m_callback(callback)
     , m_priority(s_observerPriority++)
 {
-    ScriptWrappable::init(this);
 }
 
 MutationObserver::~MutationObserver()
 {
 #if !ENABLE(OILPAN)
     ASSERT(m_registrations.isEmpty());
 #endif
 }
 
 void MutationObserver::observe(Node* node, const Dictionary& optionsDictionary, ExceptionState& exceptionState)
@@ skipping 191 matching lines @@
 
 void MutationObserver::trace(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_records);
     visitor->trace(m_registrations);
 #endif
 }
 
 } // namespace blink