Hide/Disable several (meaningless) options in Settings uber-page for Guest.

chrome/browser/resources/options2/search_page.js

 // Copyright (c) 2012 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.
 
 cr.define('options', function() {
   const OptionsPage = options.OptionsPage;
 
   /**
    * Encapsulated handling of a search bubble.
    * @constructor
@@ skipping 294 matching lines @@
       // search terms.
       var regEx = new RegExp('(' + searchText + ')', 'ig');
       var replaceString = '<span class="search-highlighted">$1</span>';
 
       var page, length;
       var pagesToSearch = this.getSearchablePages_();
       for (var key in pagesToSearch) {
         page = pagesToSearch[key];
         var elements = page.pageDiv.querySelectorAll('section');
         for (var i = 0, node; node = elements[i]; i++) {
-          node.classList.add('search-hidden');
+          if (!node.hidden)
+            node.classList.add('search-hidden');
         }
       }
 
       var bubbleControls = [];
 
       if (searchText.length) {
         // Search all top-level sections for anchored string matches.
         for (var key in pagesToSearch) {
           page = pagesToSearch[key];
           var elements =
               page.pageDiv.querySelectorAll('section');
           for (var i = 0, node; node = elements[i]; i++) {
-            if (this.performReplace_(regEx, replaceString, node)) {
-              node.classList.remove('search-hidden');
-              foundMatches = true;
+            if (!node.hidden) {
+              if (this.performReplace_(regEx, replaceString, node)) {
+                node.classList.remove('search-hidden');
+                foundMatches = true;
+              }
             }
           }
         }
 
         // Search all sub-pages, generating an array of top-level sections that
         // we need to make visible.
         var subPagesToSearch = this.getSearchableSubPages_();
         var control, node;
         for (var key in subPagesToSearch) {
           page = subPagesToSearch[key];
@@ skipping 230 matching lines @@
     // Trim beginning and ending whitespace.
     return text.replace(/^\s+|\s+$/g, '');
   };
 
   // Export
   return {
     SearchPage: SearchPage
   };
 
 });