Migrate language block 45 - call_argument ... call_with.

tests/language_strong/call_this_test.dart

Index: tests/language_strong/call_this_test.dart
diff --git a/tests/language_strong/call_this_test.dart b/tests/language_strong/call_this_test.dart
deleted file mode 100644
index 55e7ccd509607ff939e45c328a23ddc0ab023023..0000000000000000000000000000000000000000
--- a/tests/language_strong/call_this_test.dart
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright (c) 2013, 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.
-
-// Test that dart2js treats [:this():] as a closure send.
-
-import "package:expect/expect.dart";
-
-class A {
-  call() => 42;
-  test1() => this();
-  test2() => (this)();
-}
-
-main() {
-  Expect.equals(42, (new A()).test1());
-  Expect.equals(42, (new A()).test2());
-}