Fix html/js_type_test for Dartium

tests/html/js_type_test.dart

Index: tests/html/js_type_test.dart
diff --git a/tests/html/js_type_test.dart b/tests/html/js_type_test.dart
index c77519c5768cd58f14cb378886c1f6d76da24a82..90df68f25f8bae3e2d57f58d3e9f53521c1fcb01 100644
--- a/tests/html/js_type_test.dart
+++ b/tests/html/js_type_test.dart
@@ -6,16 +6,11 @@ library jsTest;
 
 import 'dart:html';
 
-import 'package:js/js.dart';
-
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_individual_config.dart';
 import 'package:expect/expect.dart' show NoInline, AssumeDynamic;
 
-@JS()
-class Foo {
-  external factory Foo();
-}
+import 'js_type_test_lib.dart';
 
 class Bar {}