Revert "Revert "Fix x.runtimeType for native classes""

tests/compiler/dart2js_native/runtimetype_test.dart

Index: tests/compiler/dart2js_native/runtimetype_test.dart
diff --git a/tests/compiler/dart2js_native/runtimetype_test.dart b/tests/compiler/dart2js_native/runtimetype_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..dc8d7a4d5b9e34a7d5733ccffdbdc91e4cf234c6
--- /dev/null
+++ b/tests/compiler/dart2js_native/runtimetype_test.dart
@@ -0,0 +1,65 @@
+// 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:_foreign_helper' show JS;
+
+// Test to see runtimeType works on native classes and does not use the native
+// constructor name.
+
+class A native "TAGX" {
+}
+
+class B extends A native "TAGY" {
+}
+
+makeA() native;
+makeB() native;
+
+void setup() native """
+// This code is all inside 'setup' and so not accesible from the global scope.
+function inherits(child, parent) {
+  function tmp() {};
+  tmp.prototype = parent.prototype;
+  child.prototype = new tmp();
+  child.prototype.constructor = child;
+}
+
+function TAGX(){}
+function TAGY(){}
+inherits(TAGY, TAGX);
+
+makeA = function(){return new TAGX};
+makeB = function(){return new TAGY};
+""";
+
+
+testDynamicContext() {
+  var a = makeA();
+  var b = makeB();
+
+  var aT = a.runtimeType;
+  var bT = b.runtimeType;
+
+  Expect.notEquals('TAGX', '$aT');
+  Expect.notEquals('TAGY', '$bT');
+}
+
+testStaticContext() {
+  var a = JS('A', '#', makeA());  // Force compiler to know type.
+  var b = JS('B', '#', makeB());
+
+  var aT = a.runtimeType;
+  var bT = b.runtimeType;
+
+  Expect.notEquals('TAGX', '$aT');
+  Expect.notEquals('TAGY', '$bT');
+}
+
+main() {
+  setup();
+
+  testDynamicContext();
+  testStaticContext();
+}