Add support for ie in the browser controller

pkg/unittest/lib/test_controller.js

 // Copyright (c) 2011, 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.
 
 /**
  * Test controller logic - used by unit test harness to embed tests in
  * conent shell.
  */
 
 // Clear the console before every test run - this is Firebug specific code.
@@ skipping 27 matching lines @@
   if (window != window.parent) {
     // We're running in an iframe.
     return window.parent;
   } else if (window.opener) {
     // We were opened by another window.
     return window.opener;
   }
   return null;
 }
 
-function notifyStart() {
-  var driver = getDriverWindow();
-  if (driver) {
-    driver.postMessage("STARTING", "*");
-  }
-}
-
 function notifyDone() {
   if (testRunner) testRunner.notifyDone();
   // To support in browser launching of tests we post back start and result
   // messages to the window.opener.
   var driver = getDriverWindow();
   if (driver) {
     driver.postMessage(window.document.body.innerHTML, "*");
   }
 }
 
@@ skipping 86 matching lines @@
     return;
   }
   var pre = document.createElement("pre");
   pre.appendChild(document.createTextNode(String(msg)));
   document.body.appendChild(pre);
 }
 
 // dart2js will generate code to call this function instead of calling
 // Dart [main] directly. The argument is a closure that invokes main.
 function dartMainRunner(main) {
-  // We call notifyStart here to notify the encapsulating browser.
-  notifyStart();
   window.postMessage('dart-calling-main', '*');
   try {
     main();
   } catch (e) {
     dartPrint(e);
     if (e.stack) dartPrint(e.stack);
     window.postMessage('unittest-suite-fail', '*');
     return;
   }
   window.postMessage('dart-main-done', '*');
 }