Scaffold for MD-Settings, inside chrome://md-settings.

chrome/browser/resources/settings/help_pane/help_pane.js

+// Copyright 2015 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.
+
+/**
+ * @fileoverview
+ * 'cr-help-pane' shows help articles pertaining to the current page.
+ *
+ * Example:
+ *
+ *    <cr-help-pane helpArticles="{{helpArticles}}"></cr-help-pane>
+ *
+ * @group Chrome Settings Elements
+ * @element cr-help-pane
+ */
+Polymer('cr-help-pane', {
+  publish: {
+    /**
+     * List of help articles.
+     *
+     * @attribute helpArticles
+     * @type Array<!Object>
+     * default []
+     */
+    helpArticles: [],
+  },
+});