Format all tests.

tests/language_strong/async_this_bound_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";
 
 class A {
   int a = -1;
 
@@ skipping 38 matching lines @@
 }
 
 test() async {
   await testA();
   await testB();
 }
 
 void main() {
   asyncStart();
   test().then((_) => asyncEnd());
-}
+}