Audio Player: Notify track metadata update to track-list element explicitly.

ui/file_manager/audio_player/js/audio_player.js

 // 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.
 
 /**
  * Overrided metadata worker's path.
  * @type {string}
  */
 ContentMetadataProvider.WORKER_SCRIPT = '/js/metadata_worker.js';
 
@@ skipping 190 matching lines @@
 
 /**
  * Displays track's metadata.
  * @param {number} track Track number.
  * @param {Object} metadata Metadata object.
  * @param {string=} opt_error Error message.
  * @private
  */
 AudioPlayer.prototype.displayMetadata_ = function(track, metadata, opt_error) {
   this.player_.tracks[track].setMetadata(metadata, opt_error);
+  this.player_.notifyTrackMetadataUpdated(track);
 };
 
 /**
  * Closes audio player when a volume containing the selected item is unmounted.
  * @param {Event} event The unmount event.
  * @private
  */
 AudioPlayer.prototype.onExternallyUnmounted_ = function(event) {
   if (!this.selectedEntry_)
     return;
@@ skipping 257 matching lines @@
   // TODO(yoshiki): Handle error in better way.
   // TODO(yoshiki): implement artwork (metadata.thumbnail)
   this.title = metadata.mediaTitle || this.getDefaultTitle();
   this.artist = error || metadata.mediaArtist || this.getDefaultArtist();
 };
 
 // Starts loading the audio player.
 window.addEventListener('DOMContentLoaded', function(e) {
   AudioPlayer.load();
 });