Format all tests.

tests/language_strong/is_interfaces2_test.dart

 // Copyright (c) 2012, 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 {
-}
+class A {}
 
-class B extends A {
-}
+class B extends A {}
 
-class C extends B {
-}
+class C extends B {}
 
-class D implements C {
-}
+class D implements C {}
 
 int inscrutable(int x) => (x == 0) ? 0 : (x | inscrutable(x & (x - 1)));
 
 main() {
   var things = [new A(), new B(), new C(), new D()];
 
   var a = things[inscrutable(0)];
   Expect.isTrue(a is A);
   Expect.isFalse(a is B);
   Expect.isFalse(a is C);
@@ skipping 10 matching lines @@
   Expect.isTrue(c is B);
   Expect.isTrue(c is C);
   Expect.isFalse(c is D);
 
   var d = things[inscrutable(3)];
   Expect.isTrue(d is A);
   Expect.isTrue(d is B);
   Expect.isTrue(d is C);
   Expect.isTrue(d is D);
 }