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

frog/tests/frog_native/native_no_such_method_exception_frog_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.
-
-class A native "*A" {
-  bar() => 42;
-}
-
-class B native "*B" {
-  foo() => 42;
-}
-
-makeA() native;
-
-setup() native """
-  function A() {}
-  makeA = function() { return new A; }
-""";
-
-main() {
-  setup();
-  var a = makeA();
-  a.bar();
-  var exception;
-  try {
-    a.foo();
-  } catch (NoSuchMethodException e) {
-    exception = e;
-  }
-  Expect.isNotNull(exception);
-}