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

Source/modules/webaudio/AudioDestinationNode.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 21 matching lines @@
 #include "platform/audio/AudioSourceProvider.h"
 
 namespace blink {
 
 class AudioBus;
 class AudioContext;
 
 class AudioDestinationHandler : public AudioHandler, public AudioIOCallback {
 public:
     AudioDestinationHandler(AudioNode&, float sampleRate);
-    virtual ~AudioDestinationHandler();
+    ~AudioDestinationHandler() override;
 
     // AudioHandler
-    virtual void process(size_t) override final { } // we're pulled by hardware so this is never called
+    void process(size_t) final { } // we're pulled by hardware so this is never called
 
     // The audio hardware calls render() to get the next render quantum of audio into destinationBus.
     // It will optionally give us local/live audio input in sourceBus (if it's not 0).
-    virtual void render(AudioBus* sourceBus, AudioBus* destinationBus, size_t numberOfFrames) override final;
+    void render(AudioBus* sourceBus, AudioBus* destinationBus, size_t numberOfFrames) final;
 
     size_t currentSampleFrame() const { return acquireLoad(&m_currentSampleFrame); }
     double currentTime() const { return currentSampleFrame() / static_cast<double>(sampleRate()); }
 
     virtual unsigned long maxChannelCount() const { return 0; }
 
     virtual void startRendering() = 0;
     virtual void stopRendering() = 0;
 
 protected:
     // LocalAudioInputProvider allows us to expose an AudioSourceProvider for local/live audio input.
     // If there is local/live audio input, we call set() with the audio input data every render quantum.
     class LocalAudioInputProvider final : public AudioSourceProvider {
     public:
         LocalAudioInputProvider()
             : m_sourceBus(AudioBus::create(2, ProcessingSizeInFrames)) // FIXME: handle non-stereo local input.
         {
         }
 
         void set(AudioBus* bus)
         {
             if (bus)
                 m_sourceBus->copyFrom(*bus);
         }
 
         // AudioSourceProvider.
-        virtual void provideInput(AudioBus* destinationBus, size_t numberOfFrames) override
+        void provideInput(AudioBus* destinationBus, size_t numberOfFrames) override
         {
             bool isGood = destinationBus && destinationBus->length() == numberOfFrames && m_sourceBus->length() == numberOfFrames;
             ASSERT(isGood);
             if (isGood)
                 destinationBus->copyFrom(*m_sourceBus);
         }
 
     private:
         RefPtr<AudioBus> m_sourceBus;
     };
@@ skipping 11 matching lines @@
 
     unsigned long maxChannelCount() const;
 
 protected:
     AudioDestinationNode(AudioContext&);
 };
 
 } // namespace blink
 
 #endif // AudioDestinationNode_h