Fix documentation for apps/extensions permission_warnings.html

chrome/common/extensions/docs/templates/articles/permission_warnings.html

 <h1>Permission Warnings</h1>
 
 
 <!--
 NOTE: When this doc is updated, the online help should also be updated:
 http://www.google.com/support/chrome_webstore/bin/answer.py?hl=en&answer=186213
 
 We should periodically look at
 http://src.chromium.org/viewvc/chrome/trunk/src/chrome/app/generated_resources.grd?view=markup
 to make sure that we're covering all messages. Search for
@@ skipping 386 matching lines @@
 </p>
 
 <ul>
   <li>"activeTab"</li>
   <li>"browsingData"</li>
   <li>"chrome://favicon/"</li>
   <li>"clipboardWrite"</li>
   <li>"contextMenus"</li>
   <li>"cookies"</li>
   <li>"experimental"</li>
+{{?is_apps}}
   <li>"fullscreen"</li>
+{{/is_apps}}
   <li>"idle"</li>
   <li>"notifications"</li>
+{{?is_apps}}
   <li>"pointerLock"</li>
+{{/is_apps}}
   <li>"storage"</li>
   <li>"unlimitedStorage"</li>
   <li>"webRequest"</li>
   <li>"webRequestBlocking"</li>
 </ul>
 
 <h2 id="test"> Testing permission warnings </h2>
 
 <p>
 If you'd like to see exactly which warnings your users will get,
@@ skipping 20 matching lines @@
 by clicking the <b>chrome://extensions</b> page's
 <b>Update extensions now</b> button.
 </p>
 
 <h2 id="api">API</h2>
 
 <p>
 You can get a list of permission warnings for any manifest with
 $ref:management.getPermissionWarningsByManifest.
 </p>