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

Source/modules/webaudio/WaveShaperProcessor.h

 /*
  * Copyright (C) 2011, 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 28 matching lines @@
 class WaveShaperProcessor final : public AudioDSPKernelProcessor {
 public:
     enum OverSampleType {
         OverSampleNone,
         OverSample2x,
         OverSample4x
     };
 
     WaveShaperProcessor(float sampleRate, size_t numberOfChannels);
 
-    virtual ~WaveShaperProcessor();
+    ~WaveShaperProcessor() override;
 
-    virtual PassOwnPtr<AudioDSPKernel> createKernel() override;
+    PassOwnPtr<AudioDSPKernel> createKernel() override;
 
-    virtual void process(const AudioBus* source, AudioBus* destination, size_t framesToProcess) override;
+    void process(const AudioBus* source, AudioBus* destination, size_t framesToProcess) override;
 
     void setCurve(DOMFloat32Array*);
     DOMFloat32Array* curve() { return m_curve.get(); }
 
     void setOversample(OverSampleType);
     OverSampleType oversample() const { return m_oversample; }
 
 private:
     // m_curve represents the non-linear shaping curve.
     RefPtr<DOMFloat32Array> m_curve;
 
     OverSampleType m_oversample;
 };
 
 } // namespace blink
 
 #endif // WaveShaperProcessor_h