Add a timeline view to about:net-internals.

chrome/browser/resources/net_internals/test_view.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.
 
 /**
  * This view displays the progress and results from the "connection tester".
  *
  *   - Has an input box to specify the URL.
  *   - Has a button to start running the tests.
  *   - Shows the set of experiments that have been run so far, and their
@@ skipping 84 matching lines @@
       addTextNode(dtCell, '?');
 
       // We will fill in result cells with actual values (to replace the
       // placeholder '?') once the test has completed. For now we just
       // save references to these cells.
       this.currentExperimentRow_ = {
         experimentCell: experimentCell,
         dtCell: dtCell,
         resultCell: resultCell,
         passFailCell: passFailCell,
-        startTime: (new Date()).getTime()
+        startTime: timeutil.getCurrentTime()
       };
 
       addTextNode(experimentCell, 'Fetch ' + experiment.url);
 
       if (experiment.proxy_settings_experiment ||
           experiment.host_resolver_experiment) {
         var ul = addNode(experimentCell, 'ul');
 
         if (experiment.proxy_settings_experiment) {
           var li = addNode(ul, 'li');
           addTextNode(li, experiment.proxy_settings_experiment);
         }
 
         if (experiment.host_resolver_experiment) {
           var li = addNode(ul, 'li');
           addTextNode(li, experiment.host_resolver_experiment);
         }
       }
     },
 
     /**
      * Callback for when an individual test in the suite has finished.
      */
     onCompletedConnectionTestExperiment: function(experiment, result) {
       var r = this.currentExperimentRow_;
 
-      var endTime = (new Date()).getTime();
+      var endTime = timeutil.getCurrentTime();
 
       r.dtCell.innerHTML = '';
       addTextNode(r.dtCell, (endTime - r.startTime));
 
       r.resultCell.innerHTML = '';
 
       if (result == 0) {
         r.passFailCell.style.color = 'green';
         addTextNode(r.passFailCell, 'PASS');
       } else {
@@ skipping 10 matching lines @@
      * Callback for when the last test in the suite has finished.
      */
     onCompletedConnectionTestSuite: function() {
       var p = addNode(this.summaryDiv_, 'p');
       addTextNode(p, 'Completed connection test suite suite');
     }
   };
 
   return TestView;
 })();