Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/filesystem/LocalFileSystem.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:
  *
  *     * 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 24 matching lines @@
 #include "core/workers/WorkerClients.h"
 #include "platform/FileSystemType.h"
 #include "wtf/Forward.h"
 
 namespace WebCore {
 
 class AsyncFileSystemCallbacks;
 class FileSystemClient;
 class ExecutionContext;
 
-class LocalFileSystem : public Supplement<Page>, public Supplement<WorkerClients> {
+class LocalFileSystem FINAL : public Supplement<Page>, public Supplement<WorkerClients> {
     WTF_MAKE_NONCOPYABLE(LocalFileSystem);
 public:
     static PassOwnPtr<LocalFileSystem> create(PassOwnPtr<FileSystemClient>);
     virtual ~LocalFileSystem();
 
     void resolveURL(ExecutionContext*, const KURL&, PassOwnPtr<AsyncFileSystemCallbacks>);
     void requestFileSystem(ExecutionContext*, FileSystemType, long long size, PassOwnPtr<AsyncFileSystemCallbacks>);
     void deleteFileSystem(ExecutionContext*, FileSystemType, PassOwnPtr<AsyncFileSystemCallbacks>);
 
     FileSystemClient* client() { return m_client.get(); }
 
     static const char* supplementName();
     static LocalFileSystem* from(ExecutionContext*);
 
 protected:
     explicit LocalFileSystem(PassOwnPtr<FileSystemClient>);
 
     OwnPtr<FileSystemClient> m_client;
 };
 
 } // namespace WebCore
 
 #endif // LocalFileSystem_h