dart2js: run dartfmt on tests

tests/compiler/dart2js_extra/deferred/deferred_class_library2.dart

 // Copyright (c) 2014, 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.
 
 // Imported by deferred_class_test.dart.
 
 library deferred_class_library2;
 
 class MyClass {
   const MyClass();
 
   foo(x) {
     print('MyClass.foo($x)');
     return (x - 3) ~/ 2;
   }
 }
 
 class Constant {
   final value;
   const Constant(this.value);
 
-  operator==(other) => other is Constant && value == other.value;
+  operator ==(other) => other is Constant && value == other.value;
   get hashCode => 0;
 }
 
 const C1 = const Constant(499);
 const C2 = const [const Constant(99)];
 
 foo([x = const Constant(42)]) => x;
 bar() => const Constant(777);
 
 class Gee {
   get value => c.value;
   final c;
 
   Gee([this.c = const Constant(111)]);
   const Gee.n321([this.c = const Constant(321)]);
-  Gee.n135({ arg: const Constant(135) }) : this.c = arg;
-  const Gee.n246({ arg: const Constant(246) }) : this.c = arg;
+  Gee.n135({arg: const Constant(135)}) : this.c = arg;
+  const Gee.n246({arg: const Constant(246)}) : this.c = arg;
   const Gee.n888() : this.c = const Constant(888);
   const Gee.constant(this.c);
 }
 
 class Gee2 extends Gee {
   Gee2() : super(const Constant(979));
-  const Gee2.n321(): super.n321();
-  const Gee2.n151(): super.constant(const Constant(151));
+  const Gee2.n321() : super.n321();
+  const Gee2.n151() : super.constant(const Constant(151));
   const Gee2.n888() : super.n888();
 }