Use StreamParser::TrackId instead of string for MediaTrack::byteStreamTrackId

media/formats/mp4/mp4_stream_parser.cc

 // 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.
 
 #include "media/formats/mp4/mp4_stream_parser.h"
 
 #include <stddef.h>
 
 #include <limits>
 #include <memory>
@@ skipping 302 matching lines @@
       }
 
       is_audio_track_encrypted_ = entry.sinf.info.track_encryption.is_encrypted;
       DVLOG(1) << "is_audio_track_encrypted_: " << is_audio_track_encrypted_;
       audio_config.Initialize(
           codec, sample_format, channel_layout, sample_per_second, extra_data,
           is_audio_track_encrypted_ ? AesCtrEncryptionScheme() : Unencrypted(),
           base::TimeDelta(), 0);
       has_audio_ = true;
       audio_track_id_ = track->header.track_id;
-      media_tracks->AddAudioTrack(
-          audio_config, base::UintToString(audio_track_id_), "main",
-          track->media.handler.name, track->media.header.language());
+      media_tracks->AddAudioTrack(audio_config, audio_track_id_, "main",
+                                  track->media.handler.name,
+                                  track->media.header.language());
       continue;
     }
 
     if (track->media.handler.type == kVideo) {
       detected_video_track_count++;
       if (video_config.IsValidConfig())
         continue;  // Skip other video tracks once we found a supported one.
 
       RCHECK(!samp_descr.video_entries.empty());
       if (desc_idx >= samp_descr.video_entries.size())
@@ skipping 28 matching lines @@
       DVLOG(1) << "is_video_track_encrypted_: " << is_video_track_encrypted_;
       video_config.Initialize(
           entry.video_codec, entry.video_codec_profile, PIXEL_FORMAT_YV12,
           COLOR_SPACE_HD_REC709, coded_size, visible_rect, natural_size,
           // No decoder-specific buffer needed for AVC;
           // SPS/PPS are embedded in the video stream
           EmptyExtraData(),
           is_video_track_encrypted_ ? AesCtrEncryptionScheme() : Unencrypted());
       has_video_ = true;
       video_track_id_ = track->header.track_id;
-      media_tracks->AddVideoTrack(
-          video_config, base::UintToString(video_track_id_), "main",
-          track->media.handler.name, track->media.header.language());
+      media_tracks->AddVideoTrack(video_config, video_track_id_, "main",
+                                  track->media.handler.name,
+                                  track->media.header.language());
       continue;
     }
 
     // TODO(wolenetz): Investigate support in MSE and Chrome MSE for CEA 608/708
     // embedded caption data in video track. At time of init segment parsing, we
     // don't have this data (unless maybe by SourceBuffer's mimetype).
     // See https://crbug.com/597073
     if (track->media.handler.type == kText)
       detected_text_track_count++;
   }
@@ skipping 311 matching lines @@
       runs.AdvanceSample();
     }
     runs.AdvanceRun();
   }
 
   return true;
 }
 
 }  // namespace mp4
 }  // namespace media