Modified unittest to use new argument syntax.

tests/html/exceptions_test.dart

 #library('ExceptionsTest');
 #import('../../pkg/unittest/unittest.dart');
 #import('../../pkg/unittest/html_config.dart');
 #import('dart:html');
 
 main() {
   useHtmlConfiguration();
   test('DOMException', () {
     try {
       window.webkitNotifications.createNotification('', '', '');
     } on DOMException catch (e) {
-      Expect.equals(DOMException.SECURITY_ERR, e.code);
-      Expect.equals('SECURITY_ERR', e.name);
-      Expect.equals('SECURITY_ERR: DOM Exception 18', e.message);
+      expect(e.code, DOMException.SECURITY_ERR);
+      expect(e.name, 'SECURITY_ERR');
+      expect(e.message, 'SECURITY_ERR: DOM Exception 18');
     }
   });
   test('EventException', () {
     final event = new Event('Event');
     // Intentionally do not initialize it!
     try {
       document.$dom_dispatchEvent(event);
     } on EventException catch (e) {
-      Expect.equals(EventException.UNSPECIFIED_EVENT_TYPE_ERR, e.code);
-      Expect.equals('UNSPECIFIED_EVENT_TYPE_ERR', e.name);
-      Expect.equals('UNSPECIFIED_EVENT_TYPE_ERR: DOM Events Exception 0', e.message);
+      expect(e.code, EventException.UNSPECIFIED_EVENT_TYPE_ERR);
+      expect(e.name, 'UNSPECIFIED_EVENT_TYPE_ERR');
+      expect(e.message, 'UNSPECIFIED_EVENT_TYPE_ERR: DOM Events Exception 0');
     }
   });
 }