Migrate language block 45 - call_argument ... call_with.

tests/language_strong/call_function_test.dart

-// Copyright (c) 2015, 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.
-
-import "package:expect/expect.dart";
-
-Object bar(Object x) {
-  return x;
-}
-
-Function baz = bar;
-
-dynamic dyn = bar;
-
-class Foo {
-  Object call(Object x) {
-    return 'Foo$x';
-  }
-}
-
-typedef Object FooType(Object x);
-FooType foo = bar;
-
-void main() {
-  Expect.equals(42, bar.call(42));
-  Expect.equals(42, baz.call(42));
-  Expect.equals(42, foo.call(42));
-  Expect.equals(42, dyn.call(42));
-  Expect.equals(42, bar(42));
-  Expect.equals(42, baz(42));
-  Expect.equals(42, foo(42));
-  Expect.equals(42, dyn(42));
-
-  baz = new Foo();
-  foo = new Foo();
-  dyn = new Foo();
-  Expect.equals('Foo42', baz.call(42));
-  Expect.equals('Foo42', foo.call(42));
-  Expect.equals('Foo42', dyn.call(42));
-  Expect.equals('Foo42', baz(42));
-  Expect.equals('Foo42', foo(42));
-  Expect.equals('Foo42', dyn(42));
-}