Format all tests.

tests/language/prefix10_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 Prefix10Test.dart;
+
 import "package:expect/expect.dart";
 import "library10.dart" as lib10;
 import "library11.dart" as lib11;
 
 class Prefix10Test {
   static Test1() {
     var result = 0;
     var obj = new lib10.Library10(1);
     result = obj.fld;
     Expect.equals(1, result);
     result += obj.func();
     Expect.equals(3, result);
     result += lib10.Library10.static_func();
     Expect.equals(6, result);
     result += lib10.Library10.static_fld;
     Expect.equals(10, result);
   }
+
   static Test2() {
     var result = 0;
     var obj = new lib11.Library11(4);
     result = obj.fld;
     Expect.equals(4, result);
     result += obj.func();
     Expect.equals(7, result);
     result += lib11.Library11.static_func();
     Expect.equals(9, result);
     result += lib11.Library11.static_fld;
     Expect.equals(10, result);
   }
+
   static Test3() {
     Expect.equals(10, lib10.top_level10);
     Expect.equals(20, lib10.top_level_func10());
   }
+
   static Test4() {
     Expect.equals(100, lib11.top_level11);
     Expect.equals(200, lib11.top_level_func11());
   }
 }
 
 main() {
   Prefix10Test.Test1();
   Prefix10Test.Test2();
   Prefix10Test.Test3();
   Prefix10Test.Test4();
 }