Format all tests.

tests/lib/mirrors/model.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.
 
 library test.model;
 
 var accessorA;
 
 var accessorB;
 
 var accessorC;
 
 var fieldC;
 
 class A {
   var field;
   instanceMethod(x) => 'A:instanceMethod($x)';
   get accessor => 'A:get accessor';
   set accessor(x) {
     accessorA = x;
   }
+
   aMethod() => 'aMethod';
 }
 
 class B extends A {
   get field => 'B:get field';
   instanceMethod(x) => 'B:instanceMethod($x)';
   get accessor => 'B:get accessor';
   set accessor(x) {
     accessorB = x;
   }
+
   bMethod() => 'bMethod';
 }
 
 class C extends B {
   set field(x) {
     fieldC = x;
   }
+
   instanceMethod(x) => 'C:instanceMethod($x)';
   get accessor => 'C:get accessor';
   set accessor(x) {
     accessorC = x;
   }
+
   cMethod() => 'cMethod';
 }