Viewing cached webpages while offline is not available on Chrome OS

chrome/renderer/resources/neterror.js

 // Copyright 2013 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.
 
 function toggleHelpBox() {
   var helpBoxOuter = document.getElementById('help-box-outer');
   helpBoxOuter.classList.toggle('hidden');
   var detailsButton = document.getElementById('details-button');
   if (helpBoxOuter.classList.contains('hidden'))
     detailsButton.innerText = detailsButton.detailsText;
@@ skipping 113 matching lines @@
   } else {
     buttons.classList.add('suggested-right');
     controlButtonDiv.insertBefore(secondaryButton, primaryButton);
   }
 
   if (reloadButton.style.display == 'none' &&
       staleLoadButton.style.display == 'none') {
     detailsButton.classList.add('singular');
   }
 
+<if expr="not chromeos">
   // Hide the details button if there are no details to show.
   if (loadTimeData.valueExists('summary') &&
           !loadTimeData.getValue('summary').msg) {
     detailsButton.style.display = 'none';
     document.getElementById('help-box-outer').style.display = 'block';
   }
+</if>
 
   // Show control buttons.
   if (loadTimeData.valueExists('reloadButton') &&
           loadTimeData.getValue('reloadButton').msg ||
       loadTimeData.valueExists('staleLoadButton') &&
           loadTimeData.getValue('staleLoadButton').msg) {
     controlButtonDiv.hidden = false;
   }
 
   // Add a main message paragraph.
   if (loadTimeData.valueExists('primaryParagraph')) {
     var p = document.querySelector('#main-message p');
     p.innerHTML = loadTimeData.getString('primaryParagraph');
     p.hidden = false;
   }
 }
 
 document.addEventListener('DOMContentLoaded', onDocumentLoad);