Standardize usage of virtual/override/final in content/renderer/

content/renderer/media/renderer_webaudiodevice_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_RENDERER_WEBAUDIODEVICE_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_RENDERER_WEBAUDIODEVICE_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread_checker.h"
 #include "media/audio/audio_parameters.h"
@@ skipping 15 matching lines @@
                              blink::WebAudioDevice::RenderCallback* callback,
                              int session_id);
   virtual ~RendererWebAudioDeviceImpl();
 
   // blink::WebAudioDevice implementation.
   virtual void start();
   virtual void stop();
   virtual double sampleRate();
 
   // AudioRendererSink::RenderCallback implementation.
-  virtual int Render(media::AudioBus* dest,
-                     int audio_delay_milliseconds) override;
+  int Render(media::AudioBus* dest, int audio_delay_milliseconds) override;
 
-  virtual void OnRenderError() override;
+  void OnRenderError() override;
 
  private:
   const media::AudioParameters params_;
 
   // Weak reference to the callback into WebKit code.
   blink::WebAudioDevice::RenderCallback* const client_callback_;
 
   // To avoid the need for locking, ensure the control methods of the
   // blink::WebAudioDevice implementation are called on the same thread.
   base::ThreadChecker thread_checker_;
 
   // When non-NULL, we are started.  When NULL, we are stopped.
   scoped_refptr<media::AudioOutputDevice> output_device_;
 
   // ID to allow browser to select the correct input device for unified IO.
   int session_id_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererWebAudioDeviceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_RENDERER_WEBAUDIODEVICE_IMPL_H_