Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/mediastream/RTCStatsResponse.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 16 matching lines @@
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "modules/mediastream/RTCStatsReport.h"
 #include "platform/mediastream/RTCStatsResponseBase.h"
 #include "wtf/HashMap.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
-class RTCStatsResponse : public RTCStatsResponseBase, public ScriptWrappable {
+class RTCStatsResponse FINAL : public RTCStatsResponseBase, public ScriptWrappable {
 public:
     static PassRefPtr<RTCStatsResponse> create();
 
-    const Vector<RefPtr<RTCStatsReport> >& result() const { return m_result; };
+    const Vector<RefPtr<RTCStatsReport> >& result() const { return m_result; }
 
     PassRefPtr<RTCStatsReport> namedItem(const AtomicString& name);
 
     virtual size_t addReport(String id, String type, double timestamp) OVERRIDE;
     virtual void addStatistic(size_t report, String name, String value) OVERRIDE;
 
 private:
     RTCStatsResponse();
     Vector<RefPtr<RTCStatsReport> > m_result;
     HashMap<String, int> m_idmap;
 };
 
 } // namespace WebCore
 
 #endif // RTCStatsResponse_h