Move frog/tests/{leg,leg_only,frog_native} to tests/compiler/.

frog/tests/leg/static_closure_test.dart

-// Copyright (c) 2012, 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.
-
-// Test that static functions are closurized as expected.
-
-#import("compiler_helper.dart");
-
-main() {
-  String code = compileAll(@'''main() { print(main); }''');
-
-  // At some point, we will have to closurize global functions
-  // differently, at which point this test will break. Then it is time
-  // to implement a way to call a Dart closure from JS foreign
-  // functions.
-
-  // If this test fail, please take a look at the use of
-  // toStringWrapper in captureStackTrace in js_helper.dart.
-  Expect.isTrue(code.contains(@'print($.main);'));
-}