Remove getCurrentDirectoryURL and getCurrentDirPath from directory_model.js

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

 // Copyright (c) 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.
 
 'use strict';
 
 ////////////////////////////////////////////////////////////////////////////////
 // DirectoryTreeUtil
 
 /**
@@ skipping 356 matching lines @@
  * Executes the assigned action as a drop target.
  */
 DirectoryItem.prototype.doDropTargetAction = function() {
   this.expanded = true;
 };
 
 /**
  * Executes the assigned action. DirectoryItem performs changeDirectory.
  */
 DirectoryItem.prototype.doAction = function() {
-  if (this.fullPath !== this.directoryModel_.getCurrentDirPath())
+  // TODO(mtomasz, yoshiki): Do not use fullPaths here, but Entry instead.
+  if (!this.directoryModel_.getCurrentDirEntry() ||
+      this.fullPath !== this.directoryModel_.getCurrentDirEntry().fullPath) {
     this.directoryModel_.changeDirectory(this.fullPath);
+  }
 };
 
 /**
  * Sets the context menu for directory tree.
  * @param {cr.ui.Menu} menu Menu to be set.
  */
 DirectoryItem.prototype.setContextMenu = function(menu) {
   if (this.entry && PathUtil.isEligibleForFolderShortcut(this.entry.fullPath))
     cr.ui.contextMenuHandler.setContextMenu(this, menu);
 };
@@ skipping 268 matching lines @@
   this.style.paddingBottom = margin + 'px';
   this.scrollBar_.setBottomMarginForPanel(margin);
 };
 
 /**
  * Updates the UI after the layout has changed.
  */
 DirectoryTree.prototype.relayout = function() {
   cr.dispatchSimpleEvent(this, 'relayout');
 };