[MD Bookmarks] Remove Multiple Selected Items.

chrome/browser/resources/md_bookmarks/list.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-list',
 
   properties: {
     /** @type {BookmarkTreeNode} */
     menuItem_: Object,
@@ skipping 31 matching lines @@
   onCopyURLTap_: function() {
     var idList = [this.menuItem_.id];
     chrome.bookmarkManagerPrivate.copy(idList, function() {
       // TODO(jiaxi): Add toast later.
     });
     this.closeDropdownMenu_();
   },
 
   /** @private */
   onDeleteTap_: function() {
-    if (this.menuItem_.url) {
-      chrome.bookmarks.remove(this.menuItem_.id, function() {
-        // TODO(jiaxi): Add toast later.
-      }.bind(this));
-    } else {
-      chrome.bookmarks.removeTree(this.menuItem_.id, function() {
-        // TODO(jiaxi): Add toast later.
-      }.bind(this));
-    }
+    this.fire('remove-item', this.menuItem_);
     this.closeDropdownMenu_();
   },
 
   /** @private */
   onSaveEditTap_: function() {
     chrome.bookmarks.update(this.menuItem_.id, {
       'title': this.menuItem_.title,
       'url': this.menuItem_.url,
     });
     this.$.editBookmark.close();
@@ skipping 15 matching lines @@
   emptyListMessage_: function() {
     var emptyListMessage = this.searchTerm ? 'noSearchResults' : 'emptyList';
     return loadTimeData.getString(emptyListMessage);
   },
 
   /** @private */
   isEmptyList_: function() {
     return this.displayedList.length == 0;
   },
 });