Standardize usage of virtual/override/final in media/

media/filters/audio_renderer_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.
 
 // Audio rendering unit utilizing an AudioRendererSink to output data.
 //
 // This class lives inside three threads during it's lifetime, namely:
 // 1. Render thread
 //    Where the object is created.
 // 2. Media thread (provided via constructor)
@@ skipping 49 matching lines @@
   //
   // |set_decryptor_ready_cb| is fired when the audio decryptor is available
   // (only applicable if the stream is encrypted and we have a decryptor).
   AudioRendererImpl(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
       AudioRendererSink* sink,
       ScopedVector<AudioDecoder> decoders,
       const SetDecryptorReadyCB& set_decryptor_ready_cb,
       const AudioHardwareConfig& hardware_params,
       const scoped_refptr<MediaLog>& media_log);
-  virtual ~AudioRendererImpl();
+  ~AudioRendererImpl() override;
 
   // TimeSource implementation.
-  virtual void StartTicking() override;
-  virtual void StopTicking() override;
-  virtual void SetPlaybackRate(float rate) override;
-  virtual void SetMediaTime(base::TimeDelta time) override;
-  virtual base::TimeDelta CurrentMediaTime() override;
-  virtual base::TimeDelta CurrentMediaTimeForSyncingVideo() override;
+  void StartTicking() override;
+  void StopTicking() override;
+  void SetPlaybackRate(float rate) override;
+  void SetMediaTime(base::TimeDelta time) override;
+  base::TimeDelta CurrentMediaTime() override;
+  base::TimeDelta CurrentMediaTimeForSyncingVideo() override;
 
   // AudioRenderer implementation.
-  virtual void Initialize(DemuxerStream* stream,
-                          const PipelineStatusCB& init_cb,
-                          const StatisticsCB& statistics_cb,
-                          const BufferingStateCB& buffering_state_cb,
-                          const base::Closure& ended_cb,
-                          const PipelineStatusCB& error_cb) override;
-  virtual TimeSource* GetTimeSource() override;
-  virtual void Flush(const base::Closure& callback) override;
-  virtual void StartPlaying() override;
-  virtual void SetVolume(float volume) override;
+  void Initialize(DemuxerStream* stream,
+                  const PipelineStatusCB& init_cb,
+                  const StatisticsCB& statistics_cb,
+                  const BufferingStateCB& buffering_state_cb,
+                  const base::Closure& ended_cb,
+                  const PipelineStatusCB& error_cb) override;
+  TimeSource* GetTimeSource() override;
+  void Flush(const base::Closure& callback) override;
+  void StartPlaying() override;
+  void SetVolume(float volume) override;
 
  private:
   friend class AudioRendererImplTest;
 
   // Important detail: being in kPlaying doesn't imply that audio is being
   // rendered. Rather, it means that the renderer is ready to go. The actual
   // rendering of audio is controlled via Start/StopRendering().
   //
   //   kUninitialized
   //         | Initialize()
@@ skipping 43 matching lines @@
   // If this method returns fewer frames than the initial number of frames in
   // |audio_bus|, it could be a sign that the pipeline is stalled or unable to
   // stream the data fast enough.  In such scenarios, the callee should zero out
   // unused portions of their buffer to play back silence.
   //
   // Render() updates the pipeline's playback timestamp. If Render() is
   // not called at the same rate as audio samples are played, then the reported
   // timestamp in the pipeline will be ahead of the actual audio playback. In
   // this case |audio_delay_milliseconds| should be used to indicate when in the
   // future should the filled buffer be played.
-  virtual int Render(AudioBus* audio_bus,
-                     int audio_delay_milliseconds) override;
-  virtual void OnRenderError() override;
+  int Render(AudioBus* audio_bus, int audio_delay_milliseconds) override;
+  void OnRenderError() override;
 
   // Helper methods that schedule an asynchronous read from the decoder as long
   // as there isn't a pending read.
   //
   // Must be called on |task_runner_|.
   void AttemptRead();
   void AttemptRead_Locked();
   bool CanRead_Locked();
   void ChangeState_Locked(State new_state);
 
@@ skipping 98 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<AudioRendererImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_AUDIO_RENDERER_IMPL_H_