Get rid of the fake Drive/root entry.

chrome/browser/resources/file_manager/foreground/js/directory_model.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';
 
 // If directory files changes too often, don't rescan directory more than once
 // per specified interval
 var SIMULTANEOUS_RESCAN_INTERVAL = 1000;
 // Used for operations that require almost instant rescan.
@@ skipping 1018 matching lines @@
         dirEntry, driveRoot, query, searchOption);
     var previous = this.currentDirContents_.getDirectoryEntry();
     this.clearAndScan_(newDirContents);
 
     var e = new Event('directory-changed');
     e.previousDirEntry = previous;
     e.newDirEntry = dirEntry;
     this.dispatchEvent(e);
   }.bind(this, this.changeDirectorySequence_);
 
-  // TODO(hirono): We don't need to obtain the drive root to search.
-  this.resolveDirectory(volumeInfo.fakeEntries[RootType.DRIVE].fullPath,
-                        onDriveDirectoryResolved /* success */,
-                        function() {} /* failed */);
+  volumeInfo.resolveDisplayRoot(
+      onDriveDirectoryResolved /* success */, function() {} /* failed */);
 };
 
 /**
  * In case the search was active, remove listeners and send notifications on
  * its canceling.
  * @private
  */
 DirectoryModel.prototype.clearSearch_ = function() {
   if (!this.isSearching())
     return;
 
   if (this.onSearchCompleted_) {
     this.removeEventListener('scan-completed', this.onSearchCompleted_);
     this.onSearchCompleted_ = null;
   }
 
   if (this.onClearSearch_) {
     this.onClearSearch_();
     this.onClearSearch_ = null;
   }
 };