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

chrome/browser/resources/options2/content_settings.js

Index: chrome/browser/resources/options2/content_settings.js
diff --git a/chrome/browser/resources/options2/content_settings.js b/chrome/browser/resources/options2/content_settings.js
index fec7940790806a441e9c7f27658db068762801c0..3cb9cbbc53bd4ee88c455e3fa3df3c7019f3d808 100644
--- a/chrome/browser/resources/options2/content_settings.js
+++ b/chrome/browser/resources/options2/content_settings.js
@@ -67,6 +67,12 @@ cr.define('options', function() {
         };
       }
 
+      // Chrome-OS specific part
+      if (cr.isChromeOS && AccountsOptions.loggedInAsGuest()) {
+        AccountsOptions.disableElementsForGuest(
+            $('clear-cookies-on-exit-group'));
+      }
+
       // Cookies filter page ---------------------------------------------------
       $('show-cookies-button').onclick = function(event) {
         chrome.send('coreOptionsUserMetricsAction', ['Options_ShowCookies']);