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

Source/modules/webaudio/BiquadProcessor.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 32 matching lines @@
         HighPass = 1,
         BandPass = 2,
         LowShelf = 3,
         HighShelf = 4,
         Peaking = 5,
         Notch = 6,
         Allpass = 7
     };
 
     BiquadProcessor(float sampleRate, size_t numberOfChannels, AudioParamHandler& frequency, AudioParamHandler& q, AudioParamHandler& gain, AudioParamHandler& detune);
-    virtual ~BiquadProcessor();
+    ~BiquadProcessor() 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;
 
     // 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);
 
     void checkForDirtyCoefficients();
 
     bool filterCoefficientsDirty() const { return m_filterCoefficientsDirty; }
     bool hasSampleAccurateValues() const { return m_hasSampleAccurateValues; }
 
@@ skipping 16 matching lines @@
     // so DSP kernels know when to re-compute coefficients
     bool m_filterCoefficientsDirty;
 
     // Set to true if any of the filter parameters are sample-accurate.
     bool m_hasSampleAccurateValues;
 };
 
 } // namespace blink
 
 #endif // BiquadProcessor_h