chrome/test/data/extensions/policy_shared_module/update_template.xml

<?xml version='1.0' encoding='UTF-8'?>
<gupdate xmlns='http://www.google.com/update2/response' protocol='2.0'>
  <app appid='pchakhniekfaeoddkifplhnfbffomabh'>
    <updatecheck codebase='${URL_PLACEHOLDER}importer.crx' version='1.0.0.0' />
   </app>
  <app appid='nfgclafboonjbiafbllihiailjlhelpm'>
    <updatecheck codebase='${URL_PLACEHOLDER}shared_module.crx' version='1.0.0.0' />
   </app>
</gupdate>