Format all tests.

tests/language_strong/instance_method_negative_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.
 
 // Dart test to check that we correctly flag the use of an
 // instance method from a static method.
 
-
 class Goofy {
   String instMethod() {
     return "woof";
   }
+
   static String bark() {
-    return instMethod();  // Should get error here.
+    return instMethod(); // Should get error here.
   }
 }
 
 class InstanceMethodNegativeTest {
   static testMain() {
     var s = Goofy.bark();
   }
 }
 
-
 main() {
   InstanceMethodNegativeTest.testMain();
 }