Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/webaudio/DelayProcessor.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:
  * 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 "platform/audio/AudioDSPKernelProcessor.h"
 #include "modules/webaudio/AudioParam.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 class AudioDSPKernel;
 
-class DelayProcessor : public AudioDSPKernelProcessor {
+class DelayProcessor FINAL : public AudioDSPKernelProcessor {
 public:
     DelayProcessor(AudioContext*, float sampleRate, unsigned numberOfChannels, double maxDelayTime);
     virtual ~DelayProcessor();
 
-    virtual PassOwnPtr<AudioDSPKernel> createKernel();
+    virtual PassOwnPtr<AudioDSPKernel> createKernel() OVERRIDE;
 
     AudioParam* delayTime() const { return m_delayTime.get(); }
 
     double maxDelayTime() { return m_maxDelayTime; }
 private:
 
     RefPtr<AudioParam> m_delayTime;
     double m_maxDelayTime;
 };
 
 } // namespace WebCore
 
 #endif // DelayProcessor_h