Import rasta tests.

pkg/fasta/test/rasta/supports_reflection.dart

Index: pkg/fasta/test/rasta/supports_reflection.dart
diff --git a/pkg/fasta/test/rasta/supports_reflection.dart b/pkg/fasta/test/rasta/supports_reflection.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d14efa0611ebb0c84901597e5c19f0b08ac31bf0
--- /dev/null
+++ b/pkg/fasta/test/rasta/supports_reflection.dart
@@ -0,0 +1,7 @@
+// 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.
+
+main() {
+  print(const bool.fromEnvironment("dart.library.mirrors"));
+}