Remove unnecessary uses of GarbageCollectedFinalized<>.

third_party/WebKit/Source/core/dom/IdTargetObserverRegistry.h

 /*
  * Copyright (C) 2012 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 18 matching lines @@
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 #include "wtf/text/StringHash.h"
 
 namespace blink {
 
 class IdTargetObserver;
 
-class IdTargetObserverRegistry final : public GarbageCollectedFinalized<IdTargetObserverRegistry> {
+class IdTargetObserverRegistry final : public GarbageCollected<IdTargetObserverRegistry> {
     WTF_MAKE_NONCOPYABLE(IdTargetObserverRegistry);
     friend class IdTargetObserver;
 public:
     static IdTargetObserverRegistry* create();
     DECLARE_TRACE();
     void notifyObservers(const AtomicString& id);
     bool hasObservers(const AtomicString& id) const;
 
 private:
     IdTargetObserverRegistry() : m_notifyingObserversInSet(nullptr) { }
@@ skipping 11 matching lines @@
 {
     DCHECK(!m_notifyingObserversInSet);
     if (id.isEmpty() || m_registry.isEmpty())
         return;
     IdTargetObserverRegistry::notifyObserversInternal(id);
 }
 
 } // namespace blink
 
 #endif // IdTargetObserverRegistry_h