unittest: A unittest with 0 test cases should PASS, fixed incorrect unittest-suite-* messages

pkg/unittest/lib/html_config.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.
 
 /**
  * A simple unit test library for running tests in a browser.
  */
 library unittest_html_config;
 
 import 'dart:async';
@@ skipping 148 matching lines @@
   }
 
   void onSummary(int passed, int failed, int errors, List<TestCase> results,
       String uncaughtError) {
     _showResultsInPage(passed, failed, errors, results, _isLayoutTest,
         uncaughtError);
   }
 
   void onDone(bool success) {
     _uninstallHandlers();
-    window.postMessage('unittest-suite-done', '*');
+    if (success) {
+      window.postMessage('unittest-suite-success', '*');
+    } else {
+      window.postMessage('unittest-suite-fail', '*');
+    }
   }
 }
 
 void useHtmlConfiguration([bool isLayoutTest = false]) {
   unittestConfiguration = isLayoutTest ? _singletonLayout : _singletonNotLayout;
 }
 
 final _singletonLayout = new HtmlConfiguration(true);
 final _singletonNotLayout = new HtmlConfiguration(false);