Start cleaning up the HTML tests.

pkg/dev_compiler/test/codegen/lib/html/element_types_constructors5_test.dart

Index: pkg/dev_compiler/test/codegen/lib/html/element_types_constructors5_test.dart
diff --git a/pkg/dev_compiler/test/codegen/lib/html/element_types_constructors5_test.dart b/pkg/dev_compiler/test/codegen/lib/html/element_types_constructors5_test.dart
index e930ac1c89aadab54cc35a923c7599361250c439..0a3b79f8492b971a10920021d239b5b0116f3a0b 100644
--- a/pkg/dev_compiler/test/codegen/lib/html/element_types_constructors5_test.dart
+++ b/pkg/dev_compiler/test/codegen/lib/html/element_types_constructors5_test.dart
@@ -2,15 +2,11 @@
 // 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.
 
-library element_types_constructors5_test;
-
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_individual_config.dart';
 import 'dart:html';
 
-main() {
-  useHtmlIndividualConfiguration();
+import 'package:minitest/minitest.dart';
 
+main() {
   check(String name, bool fn(), [bool supported = true]) {
     test(name, () {
       var expectation = supported ? returnsNormally : throws;