test rename overhaul: step 8 - language tests

tests/language/default_implementation_test.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.
 // Dart test to verify that factory classes are working.
 
 // @static-clean
 
 interface Point default PointImplementation {
   Point(int x, int y);
 
@@ skipping 11 matching lines @@
   static void testMain() {
     Point point = new Point(4, 2);
     Expect.equals(4, point.x);
     Expect.equals(2, point.y);
   }
 }
 
 main() {
   DefaultImplementationTest.testMain();
 }