Remove dart2js_foreign.

dart/tests/compiler/dart2js_foreign/native_named_constructors3_test.dart

-// Copyright (c) 2011, 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.
-
-// Hidden native class with factory constructors and NO static methods.
-// Regression test.
-
-import "package:expect/expect.dart";
-import 'native_metadata.dart';
-
-@Native("*A")
-class A {
-
-  // No static methods in this class.
-
-  factory A(int len) => makeA(len);
-
-  factory A.fromString(String s)  => makeA(s.length);
-
-  @Native(r'return makeA(a+b);')
-  factory A.nativeConstructor(int a, int b);
-
-  @Native('return this._x;')
-  foo();
-}
-
-@native makeA(v);
-
-@Native("""
-// This code is all inside 'setup' and so not accesible from the global scope.
-function A(arg) { this._x = arg; }
-makeA = function(arg) { return new A(arg); }
-""")
-void setup();
-
-main() {
-  setup();
-  var a1 = new A(100);
-  var a2 = new A.fromString('Hello');
-  var a3 = new A.nativeConstructor(100, 2);
-
-  Expect.equals(100, a1.foo());
-  Expect.equals(5, a2.foo());
-  Expect.equals(102, a3.foo());
-}