[MD settings] remove overscroll in subpages

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 107 matching lines @@
   arrowState_: function(opened) {
     return opened ? 'settings:arrow-drop-up' : 'cr:arrow-drop-down';
   },
 
   /**
    * @param {boolean} showBasicPage
    * @param {boolean} inSubpage
    * @return {boolean}
    * @private
    */
-  showAdvancedToggle_: function(showBasicPage, inSubpage) {
+  showTopLevelPages_: function(showBasicPage, inSubpage) {
     return showBasicPage && !inSubpage;
   },
 
   /**
    * @private
    */
   currentRouteChanged_: function(newRoute) {
     this.inSubpage_ = newRoute.subpage.length > 0;
     this.style.height = this.inSubpage_ ? '100%' : '';
 
@@ skipping 104 matching lines @@
 
   /**
    * @param {(boolean|undefined)} visibility
    * @return {boolean} True unless visibility is false.
    * @private
    */
   showAdvancedSettings_: function(visibility) {
     return visibility !== false;
   },
 });