dart2js: run dartfmt on tests

tests/compiler/dart2js/tdiv_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.
 
 library tdiv_test;
 
 import 'dart:async';
 import 'package:expect/expect.dart';
 import 'package:async_helper/async_helper.dart';
 import 'compiler_helper.dart';
@@ skipping 67 matching lines @@
         } else {
           assert(directive == 'absent');
           Expect.isFalse(generated.contains(pattern),
               "Must not find '$pattern' in:\n$generated");
         }
       }
     });
   }
 
   asyncTest(() => Future.wait([
-    check(TEST1),
-    check(TEST2),
-    check(TEST3),
-    check(TEST4),
-    check(TEST5),
-  ]));
+        check(TEST1),
+        check(TEST2),
+        check(TEST3),
+        check(TEST4),
+        check(TEST5),
+      ]));
 }