Import rasta tests.

pkg/fasta/test/rasta/native_is_illegal.dart

Index: pkg/fasta/test/rasta/native_is_illegal.dart
diff --git a/pkg/fasta/test/rasta/native_is_illegal.dart b/pkg/fasta/test/rasta/native_is_illegal.dart
new file mode 100644
index 0000000000000000000000000000000000000000..84b8275ca93199edcf828de6704b5a6cc0749b80
--- /dev/null
+++ b/pkg/fasta/test/rasta/native_is_illegal.dart
@@ -0,0 +1,12 @@
+// Copyright (c) 2016, 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.md file.
+
+foo() native "foo";
+
+class Bar {
+  Bar get x native "Bar_get_x";
+  set x(Bar value) native "Bar_set_x";
+  f() native "Bar_f";
+  factory Bar() native "Bar_constructor";
+}