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

Source/modules/webaudio/BiquadDSPKernel.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 25 matching lines @@
 // BiquadDSPKernel is an AudioDSPKernel and is responsible for filtering one channel of a BiquadProcessor using a Biquad object.
 
 class BiquadDSPKernel final : public AudioDSPKernel {
 public:
     explicit BiquadDSPKernel(BiquadProcessor* processor)
         : AudioDSPKernel(processor)
     {
     }
 
     // AudioDSPKernel
-    virtual void process(const float* source, float* dest, size_t framesToProcess) override;
-    virtual void reset() override { m_biquad.reset(); }
+    void process(const float* source, float* dest, size_t framesToProcess) override;
+    void reset() override { m_biquad.reset(); }
 
     // Get the magnitude and phase response of the filter at the given
     // set of frequencies (in Hz). The phase response is in radians.
     void getFrequencyResponse(int nFrequencies, const float* frequencyHz, float* magResponse, float* phaseResponse);
 
-    virtual double tailTime() const override;
-    virtual double latencyTime() const override;
+    double tailTime() const override;
+    double latencyTime() const override;
 
 protected:
     Biquad m_biquad;
     BiquadProcessor* biquadProcessor() { return static_cast<BiquadProcessor*>(processor()); }
 
     // To prevent audio glitches when parameters are changed,
     // dezippering is used to slowly change the parameters.
     void updateCoefficientsIfNecessary();
     // Update the biquad cofficients with the given parameters
     void updateCoefficients(double frequency, double Q, double gain, double detune);
 
 private:
     // Synchronize process() with getting and setting the filter coefficients.
     mutable Mutex m_processLock;
 };
 
 } // namespace blink
 
 #endif // BiquadDSPKernel_h