Add all dart:html tests from the sdk to test/codegen.

test/codegen/lib/html/callbacks_test.dart

Index: test/codegen/lib/html/callbacks_test.dart
diff --git a/test/codegen/lib/html/callbacks_test.dart b/test/codegen/lib/html/callbacks_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..c6e9498eb8e8107d4a14395a3aa730f08424cacb
--- /dev/null
+++ b/test/codegen/lib/html/callbacks_test.dart
@@ -0,0 +1,11 @@
+library CallbacksTest;
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_config.dart';
+import 'dart:html';
+
+main() {
+  useHtmlConfiguration();
+  test('RequestAnimationFrameCallback', () {
+    window.requestAnimationFrame((num time) => false);
+  });
+}