Render inband text tracks in the media pipeline

media/webm/webm_tracks_parser.cc

 // 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.
 
 #include "media/webm/webm_tracks_parser.h"
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "media/base/buffers.h"
 #include "media/webm/webm_constants.h"
@@ skipping 174 matching lines @@
       } else {
         MEDIA_LOG(log_cb_) << "Ignoring video track " << track_num_;
         ignored_tracks_.insert(track_num_);
       }
     } else if (track_type_ == kWebMTrackTypeSubtitlesOrCaptions ||
                track_type_ == kWebMTrackTypeDescriptionsOrMetadata) {
       if (ignore_text_tracks_) {
         MEDIA_LOG(log_cb_) << "Ignoring text track " << track_num_;
         ignored_tracks_.insert(track_num_);
       } else {
-        TextTrackInfo& text_track_info = text_tracks_[track_num_];
-        text_track_info.kind = text_track_kind;
-        text_track_info.name = track_name_;
-        text_track_info.language = track_language_;
+        text_tracks_[track_num_] = TextTrackConfig(text_track_kind,
+                                                   track_name_,
+                                                   track_language_);
       }
     } else {
       MEDIA_LOG(log_cb_) << "Unexpected TrackType " << track_type_;
       return false;
     }
 
     track_type_ = -1;
     track_num_ = -1;
     track_name_.clear();
     track_language_.clear();
@@ skipping 74 matching lines @@
 
   if (id == kWebMIdLanguage) {
     track_language_ = str;
     return true;
   }
 
   return true;
 }
 
 }  // namespace media