[MD Bookmarks] Add edit folder.

chrome/test/data/webui/md_bookmarks/list_test.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.
+
+suite('<bookmarks-list>', function() {
+  var list;
+  var TEST_LIST =
+      [createItem('0'), createItem('1'), createFolder('2', [], null)];
+
+  setup(function() {
+    list = document.createElement('bookmarks-list');
+    replaceBody(list);
+    list.displayedList = TEST_LIST;
+  });
+
+  test('folder menu item hide the url field', function() {
+    // Bookmark editor shows the url field.
+    list.menuItem_ = TEST_LIST[0];
+    assertFalse(list.$['url'].hidden);
+
+    // Folder editor hides the url field.
+    list.menuItem_ = TEST_LIST[2];
+    assertTrue(list.$['url'].hidden);
+  });

[calamity, 2017/02/02 06:49:13]

Also mock out chrome.bookmarks.update and make sure the right things get given
to it for folders and for URLs for an edit.

[angelayang, 2017/02/03 02:26:24]

Done.

+});