Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/mediastream/UserMediaController.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 15 matching lines @@
 #define UserMediaController_h
 
 #include "core/page/Page.h"
 #include "modules/mediastream/UserMediaClient.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
 class UserMediaRequest;
 
-class UserMediaController : public Supplement<Page> {
+class UserMediaController FINAL : public Supplement<Page> {
 public:
-    ~UserMediaController();
+    virtual ~UserMediaController();
 
     UserMediaClient* client() const { return m_client; }
     void requestUserMedia(PassRefPtr<UserMediaRequest>);
     void cancelUserMediaRequest(UserMediaRequest*);
 
     static PassOwnPtr<UserMediaController> create(UserMediaClient*);
     static const char* supplementName();
     static UserMediaController* from(Page* page) { return static_cast<UserMediaController*>(Supplement<Page>::from(page, supplementName())); }
 
 protected:
     explicit UserMediaController(UserMediaClient*);
 
 private:
     UserMediaClient* m_client;
 };
 
 inline void UserMediaController::requestUserMedia(PassRefPtr<UserMediaRequest> request)
 {
     m_client->requestUserMedia(request);
 }
 
 inline void UserMediaController::cancelUserMediaRequest(UserMediaRequest* request)
 {
     m_client->cancelUserMediaRequest(request);
 }
 
 } // namespace WebCore
 
 #endif // UserMediaController_h