filemanager: Pass the entire Drive path to DirectoryModel for setupCurrentDirectory.

chrome/browser/resources/file_manager/js/file_manager.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';
 
 /**
  * This variable is checked in SelectFileDialogExtensionBrowserTest.
  * @type {number}
  */
@@ skipping 1342 matching lines @@
         return;
       }
       if (this.volumeManager_.isMounted(RootDirectory.DRIVE)) {
         this.finishSetupCurrentDirectory_(path, invokeHandlers);
         return;
       }
       if (pageLoading)
         this.delayShow_(500);
       // Reflect immediatelly in the UI we are on Drive and display
       // mounting UI.
-      this.directoryModel_.setupPath(RootDirectory.DRIVE);
+      this.directoryModel_.setupPath(path);
 
       if (!this.isOnDrive()) {
         // Since DRIVE is not mounted it should be resolved synchronously
         // (no need in asynchronous calls to filesystem API). It is important
         // to prevent race condition.
         console.error('Expected path set up synchronously');
       }
 
       var self = this;
       this.volumeManager_.mountDrive(function() {
@@ skipping 2035 matching lines @@
       callback(this.preferences_);
       return;
     }
 
     chrome.fileBrowserPrivate.getPreferences(function(prefs) {
       this.preferences_ = prefs;
       callback(prefs);
     }.bind(this));
   };
 })();