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

frog/tests/frog_native/native_method_with_keyword_name_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.
-
-// Make sure we can have a native with a name that is a JavaScript keyword.
-
-class A native "*A" {
-  int delete() native;
-}
-
-A makeA() native { return new A(); }
-
-void setup() native """
-function A() {}
-A.prototype.delete = function() { return 87; };
-
-makeA = function(){return new A;};
-""";
-
-
-main() {
-  setup();
-
-  var a = makeA();
-  Expect.equals(87, a.delete());
-  A aa = a;
-  Expect.equals(87, aa.delete());  
-}