In FileManager when clicking on the current root while viewing the top directory, do nothing (inste…

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.
 
 /**
  * FileManager constructor.
  *
  * FileManager objects encapsulate the functionality of the file selector
  * dialogs, as well as the full screen file manager application (though the
  * latter is not yet implemented).
@@ skipping 1876 matching lines @@
     icon.className = 'detail-icon';
     icon.setAttribute('file-type-icon', FileType.getIcon(entry));
     return icon;
   };
 
   FileManager.prototype.renderRoot_ = function(path) {
     var li = this.document_.createElement('li');
     li.className = 'root-item';
     var dm = this.directoryModel_;
     var handleClick = function() {
-      if (li.selected) {
+      if (li.selected && path !== dm.getCurrentDirPath()) {
         dm.changeDirectory(path);
       }
     };
     li.addEventListener('mousedown', handleClick);
     li.addEventListener(cr.ui.TouchHandler.EventType.TOUCH_START, handleClick);
 
     var rootType = PathUtil.getRootType(path);
 
     var div = this.document_.createElement('div');
     div.className = 'root-label';
@@ skipping 2323 matching lines @@
     }
 
     var defaultActionSeparator =
         this.dialogDom_.querySelector('#default-action-separator');
 
     this.defaultActionMenuItem_.hidden = !taskItem;
     defaultActionSeparator.hidden = !taskItem;
   }
 })();