Adding Element.created constructor

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.
 if (typeof console == "object" && typeof console.clear == "function") {
   console.clear();
 }
+
+// Some tests may expect and have no way to suppress global errors.
+var testExpectsGlobalError = false;
+var testSuppressedGlobalErrors = [];
+
 // Set window onerror to make sure that we catch test harness errors across all
 // browsers.
 window.onerror = function (message, url, lineNumber) {
+  if (testExpectsGlobalError) {
+    testSuppressedGlobalErrors.push({
+      message: message
+    });
+    return;
+  }
   if (url) {
     showErrorAndExit(
         "\n\n" + url + ":" + lineNumber + ":\n" + message + "\n\n");
   } else {
     showErrorAndExit(message);
   }
   window.postMessage('unittest-suite-external-error', '*');
 };
 
 // Start Dartium/content_shell, unless we are waiting for HTML Imports to load.
@@ skipping 155 matching lines @@
   try {
     main();
   } catch (e) {
     dartPrint(e);
     if (e.stack) dartPrint(e.stack);
     window.postMessage('unittest-suite-fail', '*');
     return;
   }
   window.postMessage('dart-main-done', '*');
 }