Settings Router Refactor: Kill settings-router.

chrome/browser/resources/settings/default_browser_page/default_browser_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
  * 'settings-default-browser-page' is the settings page that contains
  * settings to change the default browser (i.e. which the OS will open).
  */
 Polymer({
   is: 'settings-default-browser-page',
 
   properties: {
     /**
-     * The current active route.
-     */
-    currentRoute: {
-      type: Object,
-      notify: true,
-    },
-
-    /**
      * A message about whether Chrome is the default browser.
      */
     message_: {
       type: String,
     },
 
     /**
      * Indicates if the next updateDefaultBrowserState_ invocation is following
      * a call to SettingsDefaultBrowser.setAsDefaultBrowser().
      */
@@ skipping 51 matching lines @@
           canBeDefault ? 'defaultBrowserDefault' : 'defaultBrowserUnknown');
     }
   },
 
   /** @private */
   onSetDefaultBrowserTap_: function() {
     this.startedSetAsDefault_ = true;
     chrome.send('SettingsDefaultBrowser.setAsDefaultBrowser');
   },
 });