[MD settings] set route on advanced page toggle

chrome/browser/resources/settings/settings_main/settings_main.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-main' displays the selected settings page.
  */
 Polymer({
   is: 'settings-main',
@@ skipping 51 matching lines @@
   created: function() {
     /** @private {!PromiseResolver} */
     this.resolver_ = new PromiseResolver;
     settings.main.rendered = this.resolver_.promise;
   },
 
   attached: function() {
     document.addEventListener('toggle-advanced-page', function(e) {
       this.showAdvancedPage_ = e.detail;
       this.isAdvancedMenuOpen_ = e.detail;
+      this.currentRoute = {
+        page: this.isAdvancedMenuOpen_ ? 'advanced' : 'basic',
+        section: '',
+        subpage: [],
+        url: '',

[Dan Beam, 2016/06/30 23:40:26]

where'd we land on omitting the url key as I asked in
https://codereview.chromium.org/2090753002/diff/20001/chrome/browser/resource...

?

[dschuyler, 2016/07/01 00:59:05]

Done.

+      };
       if (this.showAdvancedPage_) {
         doWhenReady(
             function() {
               var advancedPage = this.$$('settings-advanced-page');
               return !!advancedPage && advancedPage.scrollHeight > 0;
             }.bind(this),
             function() {
               this.$$('#toggleContainer').scrollIntoView();
             }.bind(this));
       }
@@ skipping 36 matching lines @@
         newRoute.page == 'advanced';
 
     this.style.height = isSubpage ? '100%' : '';
   },
 
   /** @private */
   toggleAdvancedPage_: function() {
     this.fire('toggle-advanced-page', !this.isAdvancedMenuOpen_);
   },
 });