Format all tests.

tests/corelib_strong/set_removeAll_test.dart

 // Copyright (c) 2011, 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";
 
-class A { const A(); }
-class B extends A { const B(); }
+class A {
+  const A();
+}
+
+class B extends A {
+  const B();
+}
 
 main() {
   var set1 = new Set<B>();
   set1.add(const B());
   var set2 = new Set<B>();
-  var list = <B>[ const B() ];
+  var list = <B>[const B()];
   var set3 = list.toSet();
 
   var sets = [set1, set2, set3];
   for (var setToTest in sets) {
     // Test that the set accepts a list that is not of the same type:
     //   Set<B>.removeAll(List<A>)
     Expect.isNull(setToTest.removeAll(<A>[new A()]));
   }
 }