test rename overhaul: step 5 - frog and leg tests

frog/tests/await/doubly_nested_function_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.
 
 // Await in doubly-nested functions.
 
 #import("await_test_helper.dart");
 
 bool called = false;
 
 main() {
   f1() {
     f2() {
       final x = await futureOf(3);
       return x + 1;
     }
     final x = await f2();
     return x + 10;
   }
   final x = await f1();
   Expect.equals(14, x);
 }