Format all tests.

tests/language/mixin_type_parameters_mixin_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.
 
 import "package:expect/expect.dart";
 
 class M<T> {
   bool matches(o) {
     bool isChecked = checkUsingIs(o);
     if (checkedMode) {
@@ skipping 19 matching lines @@
   static bool computeCheckedMode() {
     try {
       int x = "foo";
     } on Error {
       return true;
     }
     return false;
   }
 }
 
-class S {
-}
+class S {}
 
 class C0<T> = S with M;
 class C1<T> = S with M<T>;
 class C2<T> = S with M<int>;
 class C3 = S with M<String>;
 
 main() {
   var c0 = new C0();
   Expect.isTrue(c0 is M);
   Expect.isTrue(c0 is M<int>);
@@ skipping 67 matching lines @@
   Expect.isFalse(c2_String.matches("hello"));
 
   var c3 = new C3();
   Expect.isTrue(c3 is M);
   Expect.isFalse(c3 is M<int>);
   Expect.isTrue(c3 is M<String>);
   Expect.isFalse(c3.matches(c2));
   Expect.isFalse(c3.matches(42));
   Expect.isTrue(c3.matches("hello"));
 }