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

Source/modules/webaudio/PannerNode.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 35 matching lines @@
 class PannerHandler final : public AudioHandler {
 public:
     // These enums are used to distinguish what cached values of panner are dirty.
     enum {
         AzimuthElevationDirty = 0x1,
         DistanceConeGainDirty = 0x2,
         DopplerRateDirty = 0x4,
     };
 
     static PassRefPtr<PannerHandler> create(AudioNode&, float sampleRate);
-    virtual ~PannerHandler();
+    ~PannerHandler() override;
 
     // AudioHandler
-    virtual void process(size_t framesToProcess) override;
-    virtual void initialize() override;
-    virtual void uninitialize() override;
+    void process(size_t framesToProcess) override;
+    void initialize() override;
+    void uninitialize() override;
 
     // Panning model
     String panningModel() const;
     void setPanningModel(const String&);
 
     // Position, orientation and velocity
     void setPosition(float x, float y, float z);
     void setOrientation(float x, float y, float z);
     void setVelocity(float x, float y, float z);
 
@@ skipping 18 matching lines @@
     void setConeOuterAngle(double);
 
     double coneOuterGain() const { return m_coneEffect.outerGain(); }
     void setConeOuterGain(double);
 
     void markPannerAsDirty(unsigned);
 
     // It must be called on audio thread, currently called only process() in AudioBufferSourceNode.
     double dopplerRate();
 
-    virtual double tailTime() const override { return m_panner ? m_panner->tailTime() : 0; }
-    virtual double latencyTime() const override { return m_panner ? m_panner->latencyTime() : 0; }
+    double tailTime() const override { return m_panner ? m_panner->tailTime() : 0; }
+    double latencyTime() const override { return m_panner ? m_panner->latencyTime() : 0; }
 
-    virtual void setChannelCount(unsigned long, ExceptionState&) final;
-    virtual void setChannelCountMode(const String&, ExceptionState&) final;
+    void setChannelCount(unsigned long, ExceptionState&) final;
+    void setChannelCountMode(const String&, ExceptionState&) final;
 
 private:
     PannerHandler(AudioNode&, float sampleRate);
     // AudioContext's listener
     AudioListener* listener();
 
     bool setPanningModel(unsigned); // Returns true on success.
     bool setDistanceModel(unsigned); // Returns true on success.
 
     void calculateAzimuthElevation(double* outAzimuth, double* outElevation);
@@ skipping 64 matching lines @@
     double coneOuterGain() const;
     void setConeOuterGain(double);
 
 private:
     PannerNode(AudioContext&, float sampleRate);
 };
 
 } // namespace blink
 
 #endif // PannerNode_h