Add regression tests from Luke's bug reports. Part 2.

pkg/front_end/testcases/regress/issue_29944.dart

Index: pkg/front_end/testcases/regress/issue_29944.dart
diff --git a/pkg/front_end/testcases/regress/issue_29944.dart b/pkg/front_end/testcases/regress/issue_29944.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a938fee483753b73c2b67dc972151410b14b2880
--- /dev/null
+++ b/pkg/front_end/testcases/regress/issue_29944.dart
@@ -0,0 +1,12 @@
+// Copyright (c) 2017, 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 C {
+  C();
+  var C;
+}
+
+main() {
+  new C();
+}