>Profiling with Zones</h1>

  <button id="b1">Start Profiling</button>

  <script>
  /*
   * Let's say we want to know the CPU cost from some action
   * that includes async tasks. We can do this with zones!
   */

  /*
   * For this demo, we're going to sort an array using an async
   * algorithm when a button is pressed.
   */
  function sortAndPrintArray (unsortedArray) {
    profilingZoneSpec.reset();
    asyncBogosort(unsortedArray, function (sortedArray) {
      console.log(sortedArray);
      console