Standardize usage of virtual/override/final in media/

media/audio/fake_audio_manager.h

Index: media/audio/fake_audio_manager.h
diff --git a/media/audio/fake_audio_manager.h b/media/audio/fake_audio_manager.h
index 8fc57bd5b8cf62fd3db6c072a030224ae81b2162..ce24c3e343535b0bef0707001ef8edf5cb35c00d 100644
--- a/media/audio/fake_audio_manager.h
+++ b/media/audio/fake_audio_manager.h
@@ -18,28 +18,28 @@ class MEDIA_EXPORT FakeAudioManager : public AudioManagerBase {
   FakeAudioManager(AudioLogFactory* audio_log_factory);
 
   // Implementation of AudioManager.
-  virtual bool HasAudioOutputDevices() override;
-  virtual bool HasAudioInputDevices() override;
+  bool HasAudioOutputDevices() override;
+  bool HasAudioInputDevices() override;
 
   // Implementation of AudioManagerBase.
-  virtual AudioOutputStream* MakeLinearOutputStream(
+  AudioOutputStream* MakeLinearOutputStream(
       const AudioParameters& params) override;
-  virtual AudioOutputStream* MakeLowLatencyOutputStream(
+  AudioOutputStream* MakeLowLatencyOutputStream(
       const AudioParameters& params,
       const std::string& device_id) override;
-  virtual AudioInputStream* MakeLinearInputStream(const AudioParameters& params,
-                                                  const std::string& device_id)
-      override;
-  virtual AudioInputStream* MakeLowLatencyInputStream(
+  AudioInputStream* MakeLinearInputStream(
       const AudioParameters& params,
       const std::string& device_id) override;
-  virtual AudioParameters GetInputStreamParameters(
+  AudioInputStream* MakeLowLatencyInputStream(
+      const AudioParameters& params,
+      const std::string& device_id) override;
+  AudioParameters GetInputStreamParameters(
       const std::string& device_id) override;
 
  protected:
-  virtual ~FakeAudioManager();
+  ~FakeAudioManager() override;
 
-  virtual AudioParameters GetPreferredOutputStreamParameters(
+  AudioParameters GetPreferredOutputStreamParameters(
       const std::string& output_device_id,
       const AudioParameters& input_params) override;