Format all tests.

tests/language/map_literal6_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.
 
 // Test the use of general expression as keys in const map literals.
 
 library map_literal6_test;
 
 import "package:expect/expect.dart";
 
 class A {
   const A();
 }
+
 class B {
   final a;
   const B(this.a);
 }
 
 void main() {
   var m1 = const {
     const A(): 0,
     const B(0): 1,
     const B(1): 2,
     const B(const A()): 3,
     const B(0): 4,
   };
   Expect.isTrue(m1.containsKey(const A()));
   Expect.isTrue(m1.containsKey(const B(0)));
   Expect.isTrue(m1.containsKey(const B(1)));
   Expect.isTrue(m1.containsKey(const B(const A())));
   Expect.equals(0, m1[const A()]);
   Expect.equals(4, m1[const B(0)]);
   Expect.equals(2, m1[const B(1)]);
   Expect.equals(3, m1[const B(const A())]);
 }