Standardize usage of virtual/override/final in media/

media/filters/ffmpeg_demuxer.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.
 
 // Implements the Demuxer interface using FFmpeg's libavformat.  At this time
 // will support demuxing any audio/video format thrown at it.  The streams
 // output mime types audio/x-ffmpeg and video/x-ffmpeg and include an integer
 // key FFmpegCodecID which contains the CodecID enumeration value.  The CodecIDs
 // can be used to create and initialize the corresponding FFmpeg decoder.
 //
@@ skipping 41 matching lines @@
 class FFmpegGlue;
 class FFmpegH264ToAnnexBBitstreamConverter;
 
 typedef scoped_ptr<AVPacket, ScopedPtrAVFreePacket> ScopedAVPacket;
 
 class FFmpegDemuxerStream : public DemuxerStream {
  public:
   // Keeps a copy of |demuxer| and initializes itself using information inside
   // |stream|.  Both parameters must outlive |this|.
   FFmpegDemuxerStream(FFmpegDemuxer* demuxer, AVStream* stream);
-  virtual ~FFmpegDemuxerStream();
+  ~FFmpegDemuxerStream() override;
 
   // Enqueues the given AVPacket. It is invalid to queue a |packet| after
   // SetEndOfStream() has been called.
   void EnqueuePacket(ScopedAVPacket packet);
 
   // Enters the end of stream state. After delivering remaining queued buffers
   // only end of stream buffers will be delivered.
   void SetEndOfStream();
 
   // Drops queued buffers and clears end of stream state.
   void FlushBuffers();
 
   // Empties the queues and ignores any additional calls to Read().
   void Stop();
 
   base::TimeDelta duration() const { return duration_; }
 
   // Enables fixes for ogg files with negative timestamps.  For AUDIO streams,
   // all packets with negative timestamps will be marked for post-decode
   // discard.  For all other stream types, if FFmpegDemuxer::start_time() is
   // negative, it will not be used to shift timestamps during EnqueuePacket().
   void enable_negative_timestamp_fixups_for_ogg() {
     fixup_negative_ogg_timestamps_ = true;
   }
 
   // DemuxerStream implementation.
-  virtual Type type() override;
-  virtual void Read(const ReadCB& read_cb) override;
-  virtual void EnableBitstreamConverter() override;
-  virtual bool SupportsConfigChanges() override;
-  virtual AudioDecoderConfig audio_decoder_config() override;
-  virtual VideoDecoderConfig video_decoder_config() override;
-  virtual VideoRotation video_rotation() override;
+  Type type() override;
+  void Read(const ReadCB& read_cb) override;
+  void EnableBitstreamConverter() override;
+  bool SupportsConfigChanges() override;
+  AudioDecoderConfig audio_decoder_config() override;
+  VideoDecoderConfig video_decoder_config() override;
+  VideoRotation video_rotation() override;
 
   // Returns the range of buffered data in this stream.
   Ranges<base::TimeDelta> GetBufferedRanges() const;
 
   // Returns elapsed time based on the already queued packets.
   // Used to determine stream duration when it's not known ahead of time.
   base::TimeDelta GetElapsedTime() const;
 
   // Returns true if this stream has capacity for additional data.
   bool HasAvailableCapacity();
@@ skipping 45 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxerStream);
 };
 
 class MEDIA_EXPORT FFmpegDemuxer : public Demuxer {
  public:
   FFmpegDemuxer(const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
                 DataSource* data_source,
                 const NeedKeyCB& need_key_cb,
                 const scoped_refptr<MediaLog>& media_log);
-  virtual ~FFmpegDemuxer();
+  ~FFmpegDemuxer() override;
 
   // Demuxer implementation.
-  virtual void Initialize(DemuxerHost* host,
-                          const PipelineStatusCB& status_cb,
-                          bool enable_text_tracks) override;
-  virtual void Stop() override;
-  virtual void Seek(base::TimeDelta time, const PipelineStatusCB& cb) override;
-  virtual base::Time GetTimelineOffset() const override;
-  virtual DemuxerStream* GetStream(DemuxerStream::Type type) override;
-  virtual base::TimeDelta GetStartTime() const override;
-  virtual Liveness GetLiveness() const override;
+  void Initialize(DemuxerHost* host,
+                  const PipelineStatusCB& status_cb,
+                  bool enable_text_tracks) override;
+  void Stop() override;
+  void Seek(base::TimeDelta time, const PipelineStatusCB& cb) override;
+  base::Time GetTimelineOffset() const override;
+  DemuxerStream* GetStream(DemuxerStream::Type type) override;
+  base::TimeDelta GetStartTime() const override;
+  Liveness GetLiveness() const override;
 
   // Calls |need_key_cb_| with the initialization data encountered in the file.
   void FireNeedKey(const std::string& init_data_type,
                    const std::string& encryption_key_id);
 
   // Allow FFmpegDemuxerStream to notify us when there is updated information
   // about capacity and what buffered data is available.
   void NotifyCapacityAvailable();
   void NotifyBufferingChanged();
 
@@ skipping 114 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<FFmpegDemuxer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FFMPEG_DEMUXER_H_