Standardize usage of virtual/override/final in media/

media/formats/mpeg/mpeg_audio_stream_parser_base.h

 // Copyright 2014 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_FORMATS_MPEG_MPEG_AUDIO_STREAM_PARSER_BASE_H_
 #define MEDIA_FORMATS_MPEG_MPEG_AUDIO_STREAM_PARSER_BASE_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 10 matching lines @@
 
 class MEDIA_EXPORT MPEGAudioStreamParserBase : public StreamParser {
  public:
   // |start_code_mask| is used to find the start of each frame header.  Also
   // referred to as the sync code in the MP3 and ADTS header specifications.
   // |codec_delay| is the number of samples the decoder will output before the
   // first real frame.
   MPEGAudioStreamParserBase(uint32 start_code_mask,
                             AudioCodec audio_codec,
                             int codec_delay);
-  virtual ~MPEGAudioStreamParserBase();
+  ~MPEGAudioStreamParserBase() override;
 
   // StreamParser implementation.
-  virtual void Init(const InitCB& init_cb,
-                    const NewConfigCB& config_cb,
-                    const NewBuffersCB& new_buffers_cb,
-                    bool ignore_text_tracks,
-                    const NeedKeyCB& need_key_cb,
-                    const NewMediaSegmentCB& new_segment_cb,
-                    const base::Closure& end_of_segment_cb,
-                    const LogCB& log_cb) override;
-  virtual void Flush() override;
-  virtual bool Parse(const uint8* buf, int size) override;
+  void Init(const InitCB& init_cb,
+            const NewConfigCB& config_cb,
+            const NewBuffersCB& new_buffers_cb,
+            bool ignore_text_tracks,
+            const NeedKeyCB& need_key_cb,
+            const NewMediaSegmentCB& new_segment_cb,
+            const base::Closure& end_of_segment_cb,
+            const LogCB& log_cb) override;
+  void Flush() override;
+  bool Parse(const uint8* buf, int size) override;
 
  protected:
   // Subclasses implement this method to parse format specific frame headers.
   // |data| & |size| describe the data available for parsing.
   //
   // Implementations are expected to consume an entire frame header.  It should
   // only return a value greater than 0 when |data| has enough bytes to
   // successfully parse & consume the entire frame header.
   //
   // |frame_size| - Required parameter that is set to the size of the frame, in
@@ skipping 93 matching lines @@
   const uint32 start_code_mask_;
   const AudioCodec audio_codec_;
   const int codec_delay_;
 
   DISALLOW_COPY_AND_ASSIGN(MPEGAudioStreamParserBase);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_MPEG_MPEG_AUDIO_STREAM_PARSER_BASE_H_