Detect if webkitNotifications is available and remove webkit prefix (replaced

tests/html/exceptions_test.dart

 library ExceptionsTest;
 import '../../pkg/unittest/lib/unittest.dart';
-import '../../pkg/unittest/lib/html_config.dart';
+import '../../pkg/unittest/lib/html_individual_config.dart';
 import 'dart:html';
 
 main() {
-  useHtmlConfiguration();
-  test('DomException', () {
-    try {
-      window.webkitNotifications.createNotification('', '', '');
-    } on DomException catch (e) {
-      expect(e.code, DomException.SECURITY_ERR);
-      expect(e.name, 'SecurityError');
-      expect(e.message, 'SecurityError: DOM Exception 18');
-    }
+  useHtmlIndividualConfiguration();
+
+  group('supported', () {
+    test('supported', () {
+      expect(NotificationCenter.supported, true);

[blois, 2013/01/15 01:31:56]

This should probably go in a separate notifications test, that also validates
that it fails if not supported.

[Emily Fortuna, 2013/01/15 02:21:06]

Done.

+    });
   });
-  test('EventException', () {
-    final event = new Event('Event');
-    // Intentionally do not initialize it!
-    try {
-      document.$dom_dispatchEvent(event);
-    } on EventException catch (e) {
-      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');
+
+  group('webkitNotifications', () {
+    if (NotificationCenter.supported) {
+      test('DomException', () {
+        try {
+          window.notifications.createNotification('', '', '');
+        } on DomException catch (e) {
+          expect(e.code, DomException.SECURITY_ERR);
+          expect(e.name, 'SecurityError');
+          expect(e.message, 'SecurityError: DOM Exception 18');
+        }
+      });
+      test('EventException', () {

[blois, 2013/01/15 01:31:56]

seems like this test should not be included in the notification supported
section.

[Emily Fortuna, 2013/01/15 02:21:06]

Done.

+        final event = new Event('Event');
+        // Intentionally do not initialize it!
+        try {
+          document.$dom_dispatchEvent(event);
+        } on EventException catch (e) {
+          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');
+        }
+      });
     }
   });
 }