Start cleaning up the HTML tests.

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

Index: pkg/dev_compiler/test/codegen/lib/html/element_types_test.dart
diff --git a/pkg/dev_compiler/test/codegen/lib/html/element_types_test.dart b/pkg/dev_compiler/test/codegen/lib/html/element_types_test.dart
index ab06012d0a513ee23fa2a07a7df321653bb5bb6e..12206df971e59c3b36d260fcf5a59e16598a15bf 100644
--- a/pkg/dev_compiler/test/codegen/lib/html/element_types_test.dart
+++ b/pkg/dev_compiler/test/codegen/lib/html/element_types_test.dart
@@ -2,14 +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;
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_individual_config.dart';
 import 'dart:html';
 
-main() {
-  useHtmlIndividualConfiguration();
+import 'package:minitest/minitest.dart';
 
+main() {
   group('supported_content', () {
     test('supported', () {
       expect(ContentElement.supported, true);