[MD settings] do not scroll when toggling advanced menu

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 56 matching lines @@
 
   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: [],
       };
-      if (this.showAdvancedPage_) {
-        doWhenReady(
-            function() {
-              var advancedPage = this.$$('settings-advanced-page');
-              return !!advancedPage && advancedPage.scrollHeight > 0;
-            }.bind(this),
-            function() {
-              this.$$('#toggleContainer').scrollIntoView();
-            }.bind(this));
-      }
     }.bind(this));
 
     doWhenReady(
         function() {
           var basicPage = this.$$('settings-basic-page');
           return !!basicPage && basicPage.scrollHeight > 0;
         }.bind(this),
         function() {
           this.resolver_.resolve();
         }.bind(this));
@@ skipping 26 matching lines @@
         newRoute.page == 'advanced';
 
     this.style.height = isSubpage ? '100%' : '';
   },
 
   /** @private */
   toggleAdvancedPage_: function() {
     this.fire('toggle-advanced-page', !this.isAdvancedMenuOpen_);
   },
 });