Add support for ie in the browser controller

pkg/unittest/lib/test_controller.js

Index: pkg/unittest/lib/test_controller.js
===================================================================
--- pkg/unittest/lib/test_controller.js	(revision 26047)
+++ pkg/unittest/lib/test_controller.js	(working copy)
@@ -45,13 +45,6 @@
   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
@@ -158,8 +151,6 @@
 // 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();