Format all tests.

tests/language_strong/regress_22719_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 'dart:collection';
 import 'package:expect/expect.dart';
 
-abstract class A {
-}
+abstract class A {}
 
 abstract class B extends Object with IterableMixin<int> {
   Iterator<int> get iterator;
 }
 
 abstract class C extends A with IterableMixin<int> implements B {
-  final list = [1,2,3,4,5];
+  final list = [1, 2, 3, 4, 5];
   Iterator<int> get iterator => list.iterator;
 }
 
-class D extends C {
-}
+class D extends C {}
 
 void main() {
   var d = new D();
   var expected = 1;
-  for(var i in d) {
+  for (var i in d) {
     Expect.equals(expected, i);
     expected += 1;
   }
 }
-