Start cleaning up the HTML tests.

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

Index: pkg/dev_compiler/test/codegen/lib/html/audiocontext_test.dart
diff --git a/pkg/dev_compiler/test/codegen/lib/html/audiocontext_test.dart b/pkg/dev_compiler/test/codegen/lib/html/audiocontext_test.dart
index 68c2af9a9fdade2d3b71fbf0c6b56ea036c7a418..e8870c112710f7cbddb736a48fdda444ae771530 100644
--- a/pkg/dev_compiler/test/codegen/lib/html/audiocontext_test.dart
+++ b/pkg/dev_compiler/test/codegen/lib/html/audiocontext_test.dart
@@ -1,15 +1,11 @@
-library AudioContextTest;
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_individual_config.dart';
+import 'dart:async';
 import 'dart:html';
 import 'dart:typed_data';
 import 'dart:web_audio';
-import 'dart:async';
-
-main() {
 
-  useHtmlIndividualConfiguration();
+import 'package:minitest/minitest.dart';
 
+main() {
   var isAudioContext =
       predicate((x) => x is AudioContext, 'is an AudioContext');
 
@@ -24,16 +20,16 @@ main() {
     if (AudioContext.supported) {
       context = new AudioContext();
     }
-    
+
     test('constructorTest', () {
-      if(AudioContext.supported) {
+      if (AudioContext.supported) {
         expect(context, isNotNull);
         expect(context, isAudioContext);
       }
     });
 
     test('audioRenames', () {
-      if(AudioContext.supported) {
+      if (AudioContext.supported) {
         GainNode gainNode = context.createGain();
         gainNode.connectNode(context.destination);
         expect(gainNode is GainNode, isTrue);