test rename overhaul: step 8 - language tests

tests/language/src/DefaultImplementation2Test.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 incompatible constructor types
-
-interface Point default PointImplementation {
-  Point(x, y);
-}
-
-class PointImplementation implements Point {
-   PointImplementation(int x, int y) {} /// static type warning
-}
-
-main() {
-  new Point(1, 2);
-}