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

chrome/browser/resources/options2/browser_options.html

 <div id="settings" class="page" hidden>
   <header>
     <h1 i18n-content="settingsTitle"></h1>
     <span id="browser-options-search-field-container"
         class="search-field-container">
       <input id="search-field" type="search"
           i18n-values="placeholder:searchPlaceholder;
                        aria-label:searchPlaceholder" incremental>
     </span>
   </header>
@@ skipping 86 matching lines @@
       <button id="themes-reset"
           i18n-content="themesSetClassic"></button>
     </div>
 </if>
 <if expr="pp_ifdef('toolkit_views') or is_win or is_macosx">
     <div>
       <button id="themes-gallery" i18n-content="themesGallery"></button>
       <button id="themes-reset" i18n-content="themesReset"></button>
     </div>
 </if>
-    <div class="settings-row">
+    <div class="settings-row" guest-visibility="disabled">
       <span i18n-content="homePage"></span>
       <select id="home-page-select">
         <option value="none" i18n-content="homePageNone"></option>
         <option value="ntp" i18n-content="homePageNtp"></option>
         <option dir="ltr" value="url"></option>
         <option value="choose" i18n-content="homePageChoose"></option>
       </select>
     </div>
-    <div class="checkbox"><label>
+    <div class="checkbox" guest-visibility="disabled"><label>
         <input type="checkbox" pref="bookmark_bar.show_on_all_tabs"
             metric="Options_ShowBookmarksBar">
         <span i18n-content="toolbarShowBookmarksBar"></span>
     </label></div>
 <if expr="not pp_ifdef('toolkit_views') and is_posix and not is_macosx">
     <div class="checkbox"><label>
         <input id="show-window-decorations" type="checkbox"
             pref="browser.custom_chrome_frame" metric="Options_CustomFrame"
             inverted_pref>
         <span i18n-content="showWindowDecorations"></span>
@@ skipping 26 matching lines @@
       <div>
         <span class="settings-row"
             i18n-values=".innerHTML:defaultSearchGroupLabel">
         </span>
         <div class="settings-row">
           <select id="default-search-engine" class="weakrtl"></select>
           <button id="manage-default-search-engines"
               i18n-content="defaultSearchManageEngines">
           </button>
         </div>
-        <div class="checkbox">
+        <div class="checkbox" guest-visibility="disabled">
           <label id="instant-label">
             <!-- TODO(estade): metric? -->
             <input id="instant-field-trial-control" type="checkbox"
                 checked="checked" hidden>
             <input id="instant-enabled-control" type="checkbox"
                 pref="instant.enabled">
             <!-- TODO(estade) There's a link in here which should not be inside
                  a <label>. -->
             <span i18n-values=".innerHTML:instantPrefAndWarning"></span>
           </label>
         </div>
       </div>
   </section>
-  <section>
+  <section guest-visibility="hidden">
     <h3 i18n-content="sectionTitleUsers"></h3>
 <if expr="pp_ifdef('chromeos')">
     <div id="sync-section">
       <div id="sync-overview" class="settings-row" hidden>
         <p i18n-content="syncOverview"></p>
         <a i18n-values="href:syncLearnMoreURL" i18n-content="learnMore"></a>
       </div>
       <div id="account-picture-wrapper">
         <img id="account-picture"
             src="chrome://theme/IDR_PROFILE_PICTURE_LOADING">
@@ skipping 61 matching lines @@
       </div>
     </div>
   </section>
 </if>
 <div id="advanced-settings" hidden>
 <div id="advanced-settings-container">
 <if expr="pp_ifdef('chromeos')">
   <section>
     <h3 i18n-content="datetimeTitle"></h3>
     <div class="option-control-table">
-      <span class="option-name" i18n-content="timezone"></span>
-      <div id="timezone-value">
-        <select id="timezone-select" class="control" i18n-options="timezoneList"
-            data-type="string" pref="cros.system.timezone"></select>
+      <div guest-visibility="disabled">
+        <span class="option-name" i18n-content="timezone"></span>
+        <div id="timezone-value">
+          <select id="timezone-select" class="control"
+              i18n-options="timezoneList" data-type="string"
+              pref="cros.system.timezone">
+          </select>
+        </div>
       </div>
       <div class="checkbox">
         <label>
           <input id="use-24hour-clock" pref="settings.clock.use_24hour_clock"
               type="checkbox">
           <span i18n-content="use24HourClock"></span>
         </label>
       </div>
     </div>
   </section>
@@ skipping 18 matching lines @@
             i18n-values="href:privacyLearnMoreURL"></a>
       </div>
       <div class="checkbox">
         <label>
           <input id="alternateErrorPagesEnabled"
               pref="alternate_error_pages.enabled"
               metric="Options_LinkDoctorCheckbox" type="checkbox">
           <span i18n-content="linkDoctorPref"></span>
         </label>
       </div>
-      <div class="checkbox">
+      <div class="checkbox" guest-visibility="disabled">
         <label>
           <input id="searchSuggestEnabled" pref="search.suggest_enabled"
               metric="Options_UseSuggestCheckbox" type="checkbox">
           <span i18n-content="suggestPref"></span>
         </label>
       </div>
-      <div class="checkbox">
+      <div class="checkbox" guest-visibility="disabled">
         <label>
           <input id="dnsPrefetchingEnabled" pref="dns_prefetching.enabled"
               metric="Options_DnsPrefetchCheckbox" type="checkbox">
           <span i18n-content="networkPredictionEnabledDescription"></span>
         </label>
       </div>
       <div class="checkbox">
         <label>
           <input id="safeBrowsingEnabled" pref="safebrowsing.enabled"
               metric="Options_SafeBrowsingCheckbox" type="checkbox">
@@ skipping 220 matching lines @@
       </div>
       <div class="settings-row">
         <button id="cloudPrintManageButton"
                 i18n-content="cloudPrintChromeosOptionButton"></button>
       </div>
     </div>
   </section>
 <if expr="pp_ifdef('chromeos')">
   <!-- This section is duplicated here for ChromeOS. This must stay in sync
        with the section above. -->
-  <section id="startup-section">
+  <section id="startup-section" guest-visibility="hidden">
     <h3 i18n-content="sectionTitleStartup"></h3>
     <div>
       <div class="radio">
         <label>
           <input type="radio" name="startup" value="5"
               pref="session.restore_on_startup"
               metric="Options_Startup_NewTab">
           <span i18n-content="startupShowNewTab"></span>
         </label>
       </div>
@@ skipping 51 matching lines @@
   </section>
 </if>
 </div>  <!-- advanced-settings-container -->
 </div>  <!-- advanced-settings -->
 <footer>
   <button id="advanced-settings-expander" class="link-button"
       i18n-content="showAdvancedSettings">
   </button>
 </footer>
 </div>