Settings Rewrite: Add Sign-in (Chrome) section

chrome/browser/resources/settings/signin_page/signin_page.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-settings-basic-page' is the settings page containing the basic settings.
+ * 'settings-signin-page' is the settings page containing sign-in settings.
  *
  * Example:
  *
  *    <iron-animated-pages>
- *      <cr-settings-basic-page prefs="{{prefs}}"></cr-settings-basic-page>
+ *      <settings-signin-page prefs="{{prefs}}"></settings-signin-page>
  *      ... other pages ...
  *    </iron-animated-pages>
  *
  * @group Chrome Settings Elements
- * @element cr-settings-basic-page
+ * @element settings-signin-page
  */
 Polymer({
-  is: 'cr-settings-basic-page',
+  is: 'settings-signin-page',
 
   properties: {
     /**
-     * Preferences state.
-     */
-    prefs: {
-      type: Object,
-      notify: true,
-    },
-
-    /**
      * The current active route.
      */
     currentRoute: {
       type: Object,
       notify: true,
     },
   },
+
+  /** @private */
+  onSyncTap_: function() {
+    this.$.pages.setSubpageChain(['sync']);
+  },
 });