[VM Parser] Fix parsing of new function type syntax.

tests/language/regress_30092_test.dart

Index: tests/language/regress_30092_test.dart
diff --git a/tests/language/regress_30092_test.dart b/tests/language/regress_30092_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..46ff3cdf48d4aefc4457f2837798db37e682a584
--- /dev/null
+++ b/tests/language/regress_30092_test.dart
@@ -0,0 +1,13 @@
+// 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 BigInt {}
+
+main() {
+  void foo(void Function(BigInt, BigInt) f) {
+    f(new BigInt(), new BigInt());
+  }
+
+  foo((x, y) {});
+}