Files.app: Use createDirectoryContents_ method during search.

chrome/browser/resources/file_manager/foreground/js/directory_contents.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';
 
 /**
  * Scanner of the entries.
  * @constructor
  */
@@ skipping 40 matching lines @@
  * Extends ContentScanner.
  */
 DirectoryContentScanner.prototype.__proto__ = ContentScanner.prototype;
 
 /**
  * Starts to read the entries in the directory.
  * @override
  */
 DirectoryContentScanner.prototype.scan = function(
     entriesCallback, successCallback, errorCallback) {
-  if (!this.entry_ ||
-      (util.isFakeEntry(this.entry_) &&
-       this.entry_.rootType === RootType.DRIVE)) {
+  if (!this.entry_ || util.isFakeEntry(this.entry_)) {
     // If entry is not specified or a fake, we cannot read it.
     errorCallback(util.createDOMError(
         util.FileError.INVALID_MODIFICATION_ERR));
     return;
   }
 
   metrics.startInterval('DirectoryScan');
   var reader = this.entry_.createReader();
   var readEntries = function() {
     reader.readEntries(
@@ skipping 666 matching lines @@
 DirectoryContents.createForDriveMetadataSearch = function(
     context, fakeDirectoryEntry, searchType) {
   return new DirectoryContents(
       context,
       true,  // Search
       fakeDirectoryEntry,
       function() {
         return new DriveMetadataSearchContentScanner(searchType);
       });
 };