test rename overhaul: step 8 - language tests

tests/language/class_override_negative_test.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.
 
 // 8.1 Methods: It is a compile-time error if an interface method m1 overrides 
 // an interface method m2 and has a different number of required parameters.
 
 class A {
   foo() {}
 }
 
 class B extends A {
   foo(a) { }
 }
 
 main() {
   B instance = new B();
   instance.foo(1);
   print("Success");
 }