Fixing tests after event constructor change.

tests/html/storage_test.dart

Index: tests/html/storage_test.dart
diff --git a/tests/html/storage_test.dart b/tests/html/storage_test.dart
index f24e1b7757a17482d716e42624101f18b4bdb0d9..9c0cc3f8f6907579c5176c7dcce5ec6c1c990084 100644
--- a/tests/html/storage_test.dart
+++ b/tests/html/storage_test.dart
@@ -18,7 +18,9 @@ main() {
   });
 
   test('event', () {
-    var event = new StorageEvent('something', oldValue: 'old', newValue: 'new');
+    // Bug 8076 that not all optional params are optional in Dartium.
+    var event = new StorageEvent('something', oldValue: 'old', newValue: 'new',
+        url: 'url');
     expect(event is StorageEvent, isTrue);
     expect(event.oldValue, 'old');
     expect(event.newValue, 'new');