dart2dart: Method and constructor calls in new backend.

tests/compiler/dart2js/mirror_helper_unique_minification_test.dart

 // 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.
 
 import "package:expect/expect.dart";
 import 'dart:async';
 import "package:async_helper/async_helper.dart";
 import 'memory_compiler.dart' show compilerFor;
 import '../../../sdk/lib/_internal/compiler/implementation/apiimpl.dart' show
     Compiler;
@@ skipping 68 matching lines @@
 const MEMORY_SOURCE_FILES = const <String, String> {
   'main.dart': """
 import 'dart:mirrors';
 
 class Foo {
   noSuchMethod(invocation) {
     MirrorSystem.getName(null);
   }
 }
 
-main() {
+main(hest) {
   new Foo().fisk();
-  var hest;
 }
 """};