Remove frog from the repository.

frog/tests/await/conditional_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.
-
-// The next line is used to tell test.dart that this test is run by invoking
-// awaitc.dart and passing this file as an argument (e.g. frog
-// frog/await/awaitc.dart test.dart):
-// VMOptions=frog/await/awaitc.dart
-
-// Await within a conditional - the branch taken.
-
-#import("await_test_helper.dart");
-
-main() {
-  var x;
-  if (x == null) {
-    final f = futureOf(3);
-    x = await f;
-  } else {
-    x = 4;
-  }
-  Expect.equals(3, x);
-}
-
-// This is roughly equivalent to:
-// conditional() {
-//   final _ret = new Completer();
-//   var x;
-//   _after_if() {
-//     Expect.equals(x, 3);
-//     _ret.complete(null);
-//   }
-//   if (x == null) {
-//     final f = futureOf(3);
-//     f.then((_v) {
-//       x = _v;
-//       _after_if();
-//     });
-//     Futures.propagateError(f, _ret);
-//   } else {
-//     x = 4;
-//     _after_if();
-//   }
-//   return _ret;
-// }