Remove unnecessary finalization of IDBObserver classes.

third_party/WebKit/Source/modules/indexeddb/IDBObserver.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IDBObserver_h
 #define IDBObserver_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "modules/ModulesExport.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebVector.h"
 #include "public/platform/modules/indexeddb/WebIDBTypes.h"
 #include <bitset>
 
 namespace blink {
 
 class ExceptionState;
 class IDBDatabase;
 class IDBObserverCallback;
 class IDBObserverInit;
 class IDBTransaction;
 struct WebIDBObservation;
 
-class MODULES_EXPORT IDBObserver final : public GarbageCollectedFinalized<IDBObserver>, public ScriptWrappable {
+class MODULES_EXPORT IDBObserver final : public GarbageCollected<IDBObserver>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 
 public:
     static IDBObserver* create(IDBObserverCallback&, const IDBObserverInit&);
 
-    ~IDBObserver();
-
     void removeObserver(int32_t id);
     void onChange(int32_t id, const WebVector<WebIDBObservation>&, const WebVector<int32_t>& observationIndex);
 
     bool transaction() const { return m_transaction; }
     bool noRecords() const { return m_noRecords; }
     bool values() const { return m_values; }
     const std::bitset<WebIDBOperationTypeCount>& operationTypes() const { return m_operationTypes; }
 
     // Implement the IDBObserver IDL.
     void observe(IDBDatabase*, IDBTransaction*, ExceptionState&);
     void unobserve(IDBDatabase*, ExceptionState&);
 
     DECLARE_TRACE();
 
 private:
     IDBObserver(IDBObserverCallback&, const IDBObserverInit&);
 
     Member<IDBObserverCallback> m_callback;
     bool m_transaction;
     bool m_values;
     bool m_noRecords;
     // Operation type bits are set corresponding to WebIDBOperationType.
     std::bitset<WebIDBOperationTypeCount> m_operationTypes;
     HeapHashMap<int32_t, WeakMember<IDBDatabase>> m_observerIds;
 };
 
 } // namespace blink
 
 #endif // IDBObserver_h