test rename overhaul: step 8 - language tests

tests/language/src/ThisTest.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.
-
-class Foo {
-  var x;
-  f() {}
-
-  testMe() {
-    x.this; /// 01: compile-time error
-    x.this(); /// 02: compile-time error
-    x.this.x; /// 03: compile-time error
-    x.this().x; /// 04: compile-time error
-    f().this; /// 05: compile-time error
-    f().this(); /// 06: compile-time error
-    f().this.f(); /// 07: compile-time error
-    f().this().f(); /// 08: compile-time error
-  }
-}
-
-main() {
-  new Foo().testMe();
-}