Standardize usage of virtual/override/final in media/

media/filters/ffmpeg_audio_decoder.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_FILTERS_FFMPEG_AUDIO_DECODER_H_
 #define MEDIA_FILTERS_FFMPEG_AUDIO_DECODER_H_
 
 #include <list>
 
 #include "base/callback.h"
@@ skipping 15 matching lines @@
 namespace media {
 
 class AudioDiscardHelper;
 class DecoderBuffer;
 
 class MEDIA_EXPORT FFmpegAudioDecoder : public AudioDecoder {
  public:
   FFmpegAudioDecoder(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
       const LogCB& log_cb);
-  virtual ~FFmpegAudioDecoder();
+  ~FFmpegAudioDecoder() override;
 
   // AudioDecoder implementation.
-  virtual std::string GetDisplayName() const override;
-  virtual void Initialize(const AudioDecoderConfig& config,
-                          const PipelineStatusCB& status_cb,
-                          const OutputCB& output_cb) override;
-  virtual void Decode(const scoped_refptr<DecoderBuffer>& buffer,
-                      const DecodeCB& decode_cb) override;
-  virtual void Reset(const base::Closure& closure) override;
+  std::string GetDisplayName() const override;
+  void Initialize(const AudioDecoderConfig& config,
+                  const PipelineStatusCB& status_cb,
+                  const OutputCB& output_cb) override;
+  void Decode(const scoped_refptr<DecoderBuffer>& buffer,
+              const DecodeCB& decode_cb) override;
+  void Reset(const base::Closure& closure) override;
 
  private:
   // There are four states the decoder can be in:
   //
   // - kUninitialized: The decoder is not initialized.
   // - kNormal: This is the normal state. The decoder is idle and ready to
   //            decode input buffers, or is decoding an input buffer.
   // - kDecodeFinished: EOS buffer received, codec flushed and decode finished.
   //                    No further Decode() call should be made.
   // - kError: Unexpected error happened.
@@ skipping 52 matching lines @@
   scoped_ptr<AudioDiscardHelper> discard_helper_;
 
   LogCB log_cb_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(FFmpegAudioDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FFMPEG_AUDIO_DECODER_H_