dart2js: run dartfmt on tests

tests/compiler/dart2js/forloop_box_test.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // 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.
 
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 import 'compiler_helper.dart';
 
 String TEST = r'''
 main() {
@@ skipping 11 matching lines @@
   var a;
   for (var i=0; i<10; run(() => i++)) {
     a = () => i;
   }
   print(a());
 }
 ''';
 
 main() {
   asyncTest(() => compileAll(TEST).then((generated) {
-    Expect.isTrue(generated.contains('main_closure(i)'),
-        'for-loop variable was boxed');
-  }));
+        Expect.isTrue(generated.contains('main_closure(i)'),
+            'for-loop variable was boxed');
+      }));
   asyncTest(() => compileAll(NEGATIVE_TEST).then((generated) {
-    Expect.isFalse(generated.contains('main_closure(i)'),
-        'for-loop variable was not boxed');
-  }));
+        Expect.isFalse(generated.contains('main_closure(i)'),
+            'for-loop variable was not boxed');
+      }));
 }