[MD Bookmarks] Implement adding folders and bookmarks from toolbar menu.

chrome/browser/resources/md_bookmarks/toolbar.js

 // Copyright 2016 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.
 
 Polymer({
   is: 'bookmarks-toolbar',
 
   properties: {
     searchTerm: {
       type: String,
       observer: 'onSearchTermChanged_',
     },
+
+    createdNode: Object,
   },
 
   /** @return {CrToolbarSearchFieldElement} */
   get searchField() {
     return /** @type {CrToolbarElement} */ (this.$$('cr-toolbar'))
         .getSearchField();
   },
 
   /**
    * @param {Event} e
    * @private
    */
   onMenuButtonOpenTap_: function(e) {
     var menu = /** @type {!CrActionMenuElement} */ (this.$.dropdown);
     menu.showAt(/** @type {!Element} */ (e.target));
   },
 
   /** @private */
   onBulkEditTap_: function() {
     this.closeDropdownMenu_();
   },
 
   /** @private */
   onSortTap_: function() {
     this.closeDropdownMenu_();
   },
 
   /** @private */
   onAddBookmarkTap_: function() {
+    this.createdNode = {isFolder: false};
+    this.$.addBookmark.showModal();
     this.closeDropdownMenu_();
   },
 
+  onAddFolderTap_: function() {
+    this.createdNode = {isFolder: true};
+    this.$.addBookmark.showModal();
+    this.closeDropdownMenu_();
+  },
+
   /** @private */
   onAddImportTap_: function() {
     this.closeDropdownMenu_();
   },
 
   /** @private */
   onAddExportTap_: function() {
     this.closeDropdownMenu_();
   },
 
   /** @private */
   closeDropdownMenu_: function() {
     var menu = /** @type {!CrActionMenuElement} */ (this.$.dropdown);
     menu.close();
   },
 
+  /** @private */
+  onSaveAddTap_: function() {
+    delete this.createdNode['isFolder'];
+    this.fire('node-added', this.createdNode);
+    this.$.addBookmark.close();
+  },
+
+  /** @private */
+  onCancelAddTap_: function() {
+    this.$.addBookmark.close();
+  },
+
+  /** @private */
+  getModalTitle_: function() {
+    var title =
+        this.createdNode.isFolder ? 'addFolderTitle' : 'addBookmarkTitle';
+    return loadTimeData.getString(title);
+  },
+
   /**
    * @param {Event} e
    * @private
    */
   onSearchChanged_: function(e) {
     var searchTerm = /** @type {string} */ (e.detail);
     this.fire('search-term-changed', searchTerm);
   },
 
   /** @private */
   onSearchTermChanged_: function() {
     this.searchField.setValue(this.searchTerm || '');
   },
 });