[webui] whittle down a few more uses of old-style templateData

chrome/browser/resources/about_memory.js

 // Copyright (c) 2011 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 reload() {
   if (document.getElementById('helpTooltip'))
     return;
   history.go(0);
 }
 
@@ skipping 56 matching lines @@
   var helpEls = document.getElementsByClassName('help');
 
   for (var i = 0, helpEl; helpEl = helpEls[i]; i++) {
     helpEl.onmouseover = handleHelpTooltipMouseOver;
     helpEl.onmouseout = handleHelpTooltipMouseOut;
   }
 }
 
 document.addEventListener('DOMContentLoaded', function () {
   // This is the javascript code that processes the template:
-  var input = new JsEvalContext(templateData);
+  var input = new JsEvalContext(loadTimeData.getValue('jstemplateData'));
   var output = document.getElementById('t');
   jstProcess(input, output);
 
   enableHelpTooltips();
 });