Write browser timings on the debug log

tools/testing/dart/browser_controller.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 library browser;
 
 import "dart:async";
 import "dart:core";
 import "dart:io";
 
 import 'android.dart';
@@ skipping 856 matching lines @@
       var number_of_tests = 0;
       var current_id;
       var last_reported_id;
       var testing_window;
       // We use this to determine if we did actually get back a start event
       // from the test we just loaded.
       var did_start = false;
 
       var embedded_iframe = document.getElementById('embedded_iframe');
       var use_iframe = ${useIframe};
+      var start = new Date();
 
       function newTaskHandler() {
         if (this.readyState == this.DONE) {
           if (this.status == 200) {
             if (this.responseText == '$waitSignal') {
               setTimeout(getNextTask, 500);
             } else if (this.responseText == '$terminateSignal') {
               // Don't do anything, we will be killed shortly.
             } else {
+              var elapsed = new Date() - start;
+              reportError('Done getting task at: ' + elapsed);
               // TODO(ricow): Do something more clever here.
               if (nextTask != undefined) alert('This is really bad');
               // The task is send to us as:
               // URL#ID
               var split = this.responseText.split('#');
               var nextTask = split[0];
               current_id = split[1];
               did_start = false;
               run(nextTask);
             }
           } else {
             reportError('Could not contact the server and get a new task');
           }
         }
       }
 
       function getNextTask() {
+        var elapsed = new Date() - start;
+        reportError('Getting task at: ' + elapsed);
         var client = new XMLHttpRequest();
         client.onreadystatechange = newTaskHandler;
         client.open('GET', '$nextTestPath/$browserId');
         client.send();
       }
 
       function run(url) {
         number_of_tests++;
         document.getElementById('number').innerHTML = number_of_tests;
         if (use_iframe) {
@@ skipping 33 matching lines @@
       function reportMessage(msg) {
         if (msg == 'STARTING') {
           did_start = true;
           return;
         }
         var client = new XMLHttpRequest();
         function handleReady() {
           if (this.readyState == this.DONE) {
             if (this.status == 200) {
               if (last_reported_id != current_id && did_start) {
+                var elapsed = new Date() - start;
+                reportError('Done sending results at: ' + elapsed);
                 getNextTask();
                 last_reported_id = current_id;
               }
             } else {
               reportError('Error sending result to server');
             }
           }
         }
         client.onreadystatechange = handleReady;
         // If did_start is false it means that we did actually set the url on
         // the testing_window, but this is a report left in the event loop or
         // a callback because the page did not load yet.
         // In both cases this is a double report from the last test.
         var posting_id = did_start ? current_id : last_reported_id;
         client.open('POST', '$reportPath/${browserId}?id=' + posting_id);
         client.setRequestHeader('Content-type',
                                 'application/x-www-form-urlencoded');
         client.send(msg);
+        var elapsed = new Date() - start;
+        reportError('Sending results at: ' + elapsed);
       }
 
       function messageHandler(e) {
         var msg = e.data;
         if (typeof msg != 'string') return;
         reportMessage(msg);
       }
 
       window.addEventListener('message', messageHandler, false);
       waitForDone = false;
 
       getNextTask();
     }
 
   </script>
 </head>
   <body onload="startTesting()">
     Dart test driver, number of tests: <div id="number"></div>
     <iframe id="embedded_iframe"></iframe>
   </body>
 </html>
 """;
     return driverContent;
   }
 }