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

frog/tests/leg_only/constant_fold_number_dart2_j_s_test.dart

Index: frog/tests/leg_only/constant_fold_number_dart2_j_s_test.dart
===================================================================
--- frog/tests/leg_only/constant_fold_number_dart2_j_s_test.dart	(revision 8644)
+++ frog/tests/leg_only/constant_fold_number_dart2_j_s_test.dart	(working copy)
@@ -1,13 +0,0 @@
-// 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.
-// This test is making sure we don't try to constant fold numbers
-// where the semantics differ at compile-time (Dart) and runtime (JS).
-
-foo() => 0.0;
-bar() => 0;
-
-main() {
-  Expect.equals(foo(), bar());
-  Expect.equals(0.0, 0);
-}