Import rasta tests.

pkg/fasta/test/rasta/issue_000053.dart

Index: pkg/fasta/test/rasta/issue_000053.dart
diff --git a/pkg/fasta/test/rasta/issue_000053.dart b/pkg/fasta/test/rasta/issue_000053.dart
new file mode 100644
index 0000000000000000000000000000000000000000..86fcc4da9345082486735e23929b37bc26c5aba8
--- /dev/null
+++ b/pkg/fasta/test/rasta/issue_000053.dart
@@ -0,0 +1,13 @@
+// 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.
+
+class C {
+  operator ==(other) => throw 'x';
+  test() {
+    super == null;
+  }
+}
+main() {
+  new C().test();
+}