Format all tests.

tests/lib/mirrors/get_field_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.
 
 @MirrorsUsed(targets: "A")
 import 'dart:mirrors';
 
 import 'package:expect/expect.dart';
 
 class A {
   foo(y, [x]) => y;
-  operator+(other) => null;
+  operator +(other) => null;
   get bar => 499;
   operator$foo([optional = 499]) => optional;
 }
 
 main() {
   // We are using `getField` to tear off `foo`. We must make sure that all
   // stub methods are installed.
   var closure = reflect(new A()).getField(#foo).reflectee;
   Expect.equals("b", closure("b"));
 
   closure = reflect(new A()).getField(#operator$foo).reflectee;
   Expect.equals(499, closure());
 }