Migrate from URLs to Entries in the Files App's gallery.

chrome/browser/resources/file_manager/foreground/js/volume_manager_wrapper.js

 // Copyright 2013 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.
 
 /**
  * Thin wrapper for VolumeManager. This should be an interface proxy to talk
  * to VolumeManager. This class also filters Drive related data/events if
  * driveEnabled is set to false.
  *
  * @param {VolumeManagerWrapper.DriveEnabledStatus} driveEnabled DRIVE_ENABLED
@@ skipping 119 matching lines @@
  * Called on events sent from VolumeManager. This has responsibility to
  * re-dispatch the event to the listeners.
  * @param {Event} event Event object sent from VolumeManager.
  * @private
  */
 VolumeManagerWrapper.prototype.onEvent_ = function(event) {
   if (!this.driveEnabled_) {
     // If the drive is disabled, ignore all drive related events.
     if (event.type === 'drive-connection-changed' ||
         (event.type === 'externally-unmounted' &&
-         event.volumeType === util.VolumeType.DRIVE))
+         event.volumeInfo.volumeType === util.VolumeType.DRIVE))
       return;
   }
 
   this.dispatchEvent(event);
 };
 
 /**
  * Called on events of modifying VolumeInfoList.
  * @param {Event} event Event object sent from VolumeInfoList.
  * @private
@@ skipping 174 matching lines @@
  * @param {VolumeInfo} volumeInfo Volume info.
  * @return {VolumeInfo} Null if the drive is disabled and the given volume is
  *     drive. Otherwise just returns the volume.
  * @private
  */
 VolumeManagerWrapper.prototype.filterDisabledDriveVolume_ =
     function(volumeInfo) {
   var isDrive = volumeInfo && volumeInfo.volumeType === util.VolumeType.DRIVE;
   return this.driveEnabled_ || !isDrive ? volumeInfo : null;
 };