test rename overhaul: step 8 - language tests

tests/language/src/OverrideMethodWithFieldTest.dart

-// Copyright (c) 2012, 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.
-
-// Test overriding a method with a field.
-
-class Super {
-  Super() : super();
-
-  instanceMethod() => 42;
-}
-
-class Sub extends Super {
-  Sub() : super();
-
-  var instanceMethod = 87;  /// 01: compile-time error
-
-  superInstanceMethod() => super.instanceMethod();
-}
-
-main() {
-  var s = new Sub();
-  Super sup = s;
-  Sub sub = s;
-  print(s.instanceMethod);
-  Expect.equals(42, s.superInstanceMethod());
-  Expect.equals(42, sup.superInstanceMethod()); /// 02: static type warning
-  Expect.equals(42, sub.superInstanceMethod());
-}