Standardize usage of virtual/override/final specifiers.

media/audio/pulse/pulse_input.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 MEDIA_AUDIO_PULSE_PULSE_INPUT_H_
 #define MEDIA_AUDIO_PULSE_PULSE_INPUT_H_
 
 #include <pulse/pulseaudio.h>
 #include <string>
 
 #include "base/threading/thread_checker.h"
 #include "media/audio/agc_audio_stream.h"
 #include "media/audio/audio_device_name.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_parameters.h"
 #include "media/base/audio_block_fifo.h"
 
 namespace media {
 
 class AudioManagerPulse;
 
 class PulseAudioInputStream : public AgcAudioStream<AudioInputStream> {
  public:
   PulseAudioInputStream(AudioManagerPulse* audio_manager,
                         const std::string& device_name,
                         const AudioParameters& params,
                         pa_threaded_mainloop* mainloop,
                         pa_context* context);
 
-  virtual ~PulseAudioInputStream();
+  ~PulseAudioInputStream() override;
 
   // Implementation of AudioInputStream.
-  virtual bool Open() override;
-  virtual void Start(AudioInputCallback* callback) override;
-  virtual void Stop() override;
-  virtual void Close() override;
-  virtual double GetMaxVolume() override;
-  virtual void SetVolume(double volume) override;
-  virtual double GetVolume() override;
-  virtual bool IsMuted() override;
+  bool Open() override;
+  void Start(AudioInputCallback* callback) override;
+  void Stop() override;
+  void Close() override;
+  double GetMaxVolume() override;
+  void SetVolume(double volume) override;
+  double GetVolume() override;
+  bool IsMuted() override;
 
  private:
   // PulseAudio Callbacks.
   static void ReadCallback(pa_stream* handle, size_t length, void* user_data);
   static void StreamNotifyCallback(pa_stream* stream, void* user_data);
   static void VolumeCallback(pa_context* context, const pa_source_info* info,
                              int error, void* user_data);
   static void MuteCallback(pa_context* context,
                            const pa_source_info* info,
                            int error,
@@ skipping 29 matching lines @@
   bool context_state_changed_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(PulseAudioInputStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_PULSE_PULSE_INPUT_H_