Issue 933: Fix for resolving type of Function in field.

tests/language/src/FunctionFieldTest.dart

+// Copyright (c) 2011, 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.
+// VMOptions=--fatal-type-errors --enable_type_checks

[regis, 2012/02/23 19:42:09]

The VM does not support --fatal-type-errors.

[zundel, 2012/02/24 15:38:57]

VMOptions is kind of a misnomer in that they are just cmdline flags passed to
whatever tool is being invoked.  The tools should be set to ignore unrecognized
options.

+//
+// Test of calling Function, which is field of some class.
+
+class Wrapper {
+  Function f;
+}
+
+main() {
+  Wrapper w = new Wrapper();
+  w.f = () {return 42;};
+  Expect.equals(42, w.f());
+}