test rename overhaul: step 8 - language tests

tests/language/src/Switch1NegativeTest.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.
-// Check that default clause must be last case.
-
-class Switch1NegativeTest {
-
-  static testMain() {
-    var a = 5;
-    var x;
-    S: switch (a) {
-      case 1: x = 1; break;
-      case 6: x = 2; break S;
-      default:
-      case 8:  break;
-    }
-    return a;
-  }
-}
-
-main() {
-  Switch1NegativeTest.testMain();
-}