Import rasta tests.

pkg/fasta/test/rasta/deferred_lib.dart

Index: pkg/fasta/test/rasta/deferred_lib.dart
diff --git a/pkg/fasta/test/rasta/deferred_lib.dart b/pkg/fasta/test/rasta/deferred_lib.dart
new file mode 100644
index 0000000000000000000000000000000000000000..b4e6442acb004dce20232556b3b8f42e63cc78eb
--- /dev/null
+++ b/pkg/fasta/test/rasta/deferred_lib.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.
+
+library deferred_lib;
+
+foo() => null;