Format all tests.

tests/language_strong/mixin_regress_11398_test.dart

 // Copyright (c) 2013, 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";
 
 void main() {
   var hva = new HasValueA();
   hva.value = '42';
   Expect.equals('42', hva.value);
@@ skipping 10 matching lines @@
 abstract class Delegate {
   String invoke(String value);
 }
 
 abstract class DelegateMixin {
   String invoke(String value) => value;
 }
 
 abstract class HasValueMixin implements Delegate {
   String _value;
-  set value(String value) { _value = invoke(value); }
+  set value(String value) {
+    _value = invoke(value);
+  }
+
   String get value => _value;
 }
 
-class HasValueA extends Object with HasValueMixin, DelegateMixin {
-}
+class HasValueA extends Object with HasValueMixin, DelegateMixin {}
 
-class HasValueB extends Object with DelegateMixin, HasValueMixin {
-}
+class HasValueB extends Object with DelegateMixin, HasValueMixin {}
 
 class HasValueC extends Object with HasValueMixin {
   String invoke(String value) => value;
 }