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

Source/modules/webaudio/AudioContext.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 77 matching lines @@
     // Closed; Running to Suspended or Closed. Once Closed, there are no valid transitions.
     enum AudioContextState {
         Suspended,
         Running,
         Closed
     };
 
     // Create an AudioContext for rendering to the audio hardware.
     static AudioContext* create(Document&, ExceptionState&);
 
-    virtual ~AudioContext();
+    ~AudioContext() override;
 
     DECLARE_VIRTUAL_TRACE();
 
     bool isInitialized() const { return m_isInitialized; }
     bool isOfflineContext() { return m_isOfflineContext; }
 
     // Document notification
-    virtual void stop() override final;
-    virtual bool hasPendingActivity() const override;
+    void stop() final;
+    bool hasPendingActivity() const override;
 
     AudioDestinationNode* destination() { return m_destinationNode.get(); }
 
     size_t currentSampleFrame() const
     {
         return m_destinationNode ? m_destinationNode->audioDestinationHandler().currentSampleFrame() : 0;
     }
 
     double currentTime() const
     {
@@ skipping 91 matching lines @@
 #if ENABLE(ASSERT)
     // Returns true if this thread owns the context's lock.
     bool isGraphOwner() { return deferredTaskHandler().isGraphOwner(); }
 #endif
     using AutoLocker = DeferredTaskHandler::AutoLocker;
 
     // Returns the maximum numuber of channels we can support.
     static unsigned maxNumberOfChannels() { return MaxNumberOfChannels;}
 
     // EventTarget
-    virtual const AtomicString& interfaceName() const override final;
-    virtual ExecutionContext* executionContext() const override final;
+    const AtomicString& interfaceName() const final;
+    ExecutionContext* executionContext() const final;
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(complete);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(statechange);
 
     void startRendering();
     void fireCompletionEvent();
     void notifyStateChange();
 
     // A context is considered closed if:
     //  - closeContext() has been called, even if the audio HW has not yet been
@@ skipping 91 matching lines @@
     // This is considering 32 is large enough for multiple channels audio.
     // It is somewhat arbitrary and could be increased if necessary.
     enum { MaxNumberOfChannels = 32 };
 
     unsigned m_contextId;
 };
 
 } // namespace blink
 
 #endif // AudioContext_h