Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/indexeddb/IDBRequestTest.cpp

 /*
  * 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
@@ skipping 23 matching lines @@
 #include "modules/indexeddb/IDBOpenDBRequest.h"
 #include "platform/SharedBuffer.h"
 #include "public/platform/WebIDBDatabase.h"
 #include "wtf/PassOwnPtr.h"
 #include <gtest/gtest.h>
 
 using namespace WebCore;
 
 namespace {
 
-class NullEventQueue : public EventQueue {
+class NullEventQueue FINAL : public EventQueue {
 public:
     NullEventQueue() { }
     virtual ~NullEventQueue() { }
     virtual bool enqueueEvent(PassRefPtr<Event>) OVERRIDE { return true; }
     virtual bool cancelEvent(Event*) OVERRIDE { return true; }
     virtual void close() OVERRIDE { }
 };
 
-class NullExecutionContext : public ExecutionContext, public RefCounted<NullExecutionContext> {
+class NullExecutionContext FINAL : public ExecutionContext, public RefCounted<NullExecutionContext> {
 public:
     using RefCounted<NullExecutionContext>::ref;
     using RefCounted<NullExecutionContext>::deref;
 
     virtual void refExecutionContext() OVERRIDE { ref(); }
     virtual void derefExecutionContext() OVERRIDE { deref(); }
     virtual EventQueue* eventQueue() const OVERRIDE { return m_queue.get(); }
 
     NullExecutionContext();
 private:
@@ skipping 105 matching lines @@
         OwnPtr<MockWebIDBDatabase> backend = MockWebIDBDatabase::create();
         RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(executionContext(), callbacks, transactionId, version);
         EXPECT_EQ(request->readyState(), "pending");
 
         executionContext()->stopActiveDOMObjects();
         request->onSuccess(backend.release(), metadata);
     }
 }
 
 } // namespace