Get rid of fullPath in the metadata cache.

chrome/browser/resources/file_manager/foreground/js/media/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.
 
 'use strict';
 
 /**
  * TODO(mtomasz): Rewrite the entire audio player.
  *
  * @param {HTMLElement} container Container element.
  * @constructor
  */
 function AudioPlayer(container) {
   this.container_ = container;
-  this.metadataCache_ = MetadataCache.createFull();
   this.currentTrack_ = -1;
   this.playlistGeneration_ = 0;
   this.selectedEntry_ = null;
   this.volumeManager_ = new VolumeManagerWrapper(
       VolumeManagerWrapper.DriveEnabledStatus.DRIVE_ENABLED);
+  this.metadataCache_ = MetadataCache.createFull(this.volumeManager_);
 
   this.container_.classList.add('collapsed');
 
   function createChild(opt_className, opt_tag) {
     var child = container.ownerDocument.createElement(opt_tag || 'div');
     if (opt_className)
       child.className = opt_className;
     container.appendChild(child);
     return child;
   }
@@ skipping 588 matching lines @@
  * Restore the state after page/app reload.
  */
 FullWindowAudioControls.prototype.restorePlayState = function() {
   if (this.restoreWhenLoaded_) {
     this.restoreWhenLoaded_ = false;  // This should only work once.
     if (this.decodeState())
       return;
   }
   this.play();
 };