Plugins page in BWSI session has unnecessary and misleading UI components

chrome/browser/resources/plugins.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.
 
 /**
  * This variable structure is here to document the structure that the template
  * expects to correctly populate the page.
  */
 var pluginDataFormat = {
   plugins: [
@@ skipping 143 matching lines @@
       return false;
     };
   }
   var checkboxes = document.getElementsByClassName('always-allow');
   for (var i = 0; i < checkboxes.length; i++) {
     checkboxes[i].onclick = function() {
       handleSetPluginAlwaysAllowed(this);
     };
   }
 
+  // Disable some controls for Guest in ChromeOS.
+  if (cr.isChromeOS)
+    uiAccountTweaks.UIAccountTweaks.applyGuestModeVisibility(document);
+
   // Make sure the left column (with "Description:", "Location:", etc.) is the
   // same size for all plugins.
   var labels = document.getElementsByClassName('plugin-details-label');
   var maxLabelWidth = 0;
   for (var i = 0; i < labels.length; i++)
     labels[i].style.width = 'auto';
   for (var i = 0; i < labels.length; i++)
     maxLabelWidth = Math.max(maxLabelWidth, labels[i].offsetWidth);
   for (var i = 0; i < labels.length; i++)
     labels[i].style.width = maxLabelWidth + 'px';
@@ skipping 89 matching lines @@
 // (yet), so in the meanwhile just update regularly.
 setInterval(requestPluginsData, 30000);
 
 // Get data and have it displayed upon loading.
 document.addEventListener('DOMContentLoaded', requestPluginsData);
 
 // Add handlers to static HTML elements.
 $('collapse').onclick = toggleTmiMode;
 $('expand').onclick = toggleTmiMode;
 $('details-link').onclick = toggleTmiMode;