Format all tests.

tests/language_strong/prefix17_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.
 
 library Prefix17Test.dart;
+
 import "library12.dart" as lib12;
 
 class LocalClass {
   static int static_fld;
 }
 
 void main() {
   LocalClass.static_fld = 42;
   var lc1 = new lib12.Library12(5);
   lib12.Library12 lc2 = new lib12.Library12(10);
-  lib12.Library12 lc2m = new lib12.Library12.other(10,2);
+  lib12.Library12 lc2m = new lib12.Library12.other(10, 2);
   lib12.Library12.static_fld = 43;
   //print("${LocalClass.static_fld}, ${lc1.fld}, ${lc2.fld}, ${lc2m.fld}, ${lib12.Library12.static_fld}");
 }