Fix virtual/override/final usage in Source/modules/.

Source/modules/webaudio/AnalyserNode.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 18 matching lines @@
 #include "modules/webaudio/AudioBasicInspectorNode.h"
 #include "modules/webaudio/RealtimeAnalyser.h"
 
 namespace blink {
 
 class ExceptionState;
 
 class AnalyserHandler final : public AudioBasicInspectorHandler {
 public:
     static PassRefPtr<AnalyserHandler> create(AudioNode&, float sampleRate);
-    virtual ~AnalyserHandler();
+    ~AnalyserHandler() override;
 
     // AudioHandler
-    virtual void process(size_t framesToProcess) override;
+    void process(size_t framesToProcess) override;
 
     unsigned fftSize() const { return m_analyser.fftSize(); }
     void setFftSize(unsigned size, ExceptionState&);
 
     unsigned frequencyBinCount() const { return m_analyser.frequencyBinCount(); }
 
     void setMinDecibels(double k, ExceptionState&);
     double minDecibels() const { return m_analyser.minDecibels(); }
 
     void setMaxDecibels(double k, ExceptionState&);
@@ skipping 33 matching lines @@
     void getByteTimeDomainData(DOMUint8Array*);
 
 private:
     AnalyserNode(AudioContext&, float sampleRate);
     AnalyserHandler& analyserHandler() const;
 };
 
 } // namespace blink
 
 #endif // AnalyserNode_h