Revert r13442. The extension fails to install under Windows, and the sentinel

pkg/unittest/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
  * DumpRenderTree.
  */
 
 if (navigator.webkitStartDart) {
   navigator.webkitStartDart();
 }
 
 // testRunner is provided by DRT or WebKit's layout tests.
 // It is not available in selenium tests.
 var testRunner = window.testRunner || window.layoutTestController;
 
 var waitForDone = false;
 
-// _callback and getMessages are used to retrieve console messages
-// from the Chrome ConsoleCollector extension. run_selenium.py can
-// call getMessages with execute_async_script, and when the messages
-// are returned from the extension they can be returned via a callback
-// provided by Selenium. _callback is used to hold a reference to 
-// that callback. The messages are returned from the extension via
-// a window.postMessage call with type property 'gotMessages'.
-var _callback;
-function getMessages(callback) {
-  _callback = callback;
-  window.postMessage("getMessages", "*");
-}
-
 function processMessage(msg) {
-  if (typeof msg != 'string') {
-    if (msg.type == 'gotMessages') {
-      // Handle console messages from Chrome extension.
-      if (_callback) {
-        _callback(msg.messages);
-        _callback = null;
-      }
-    }
-    return;
-  }
+  if (typeof msg != 'string') return;
   if (msg == 'unittest-suite-done') {
     if (testRunner) testRunner.notifyDone();
   } else if (msg == 'unittest-suite-wait-for-done') {
     waitForDone = true;
     if (testRunner) testRunner.startedDartTest = true;
   } else if (msg == 'dart-calling-main') {
     if (testRunner) testRunner.startedDartTest = true;
   } else if (msg == 'dart-main-done') {
     if (!waitForDone) {
       window.postMessage('unittest-suite-success', '*');
@@ skipping 80 matching lines @@
 function dartMainRunner(main) {
   window.postMessage('dart-calling-main', '*');
   try {
     main();
   } catch (e) {
     window.postMessage('unittest-suite-fail', '*');
     return;
   }
   window.postMessage('dart-main-done', '*');
 }