Format all tests.

tests/language/prefix8_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.
 //
 
 import "package:expect/expect.dart";
 
 // Local variables can shadow class names and hence should result in an
 // error.
 
 class Test {
   Test.named(int this.fld);
   int fld;
 }
 
 main() {
   var Test;
-  var i = new Test.named(10);  // This should be an error.
+  var i = new Test.named(10); // This should be an error.
   Expect.equals(10, i.fld);
 }