Internal libraries supported.

tests/compiler/dart2js_native/internal_library_test.dart

Index: tests/compiler/dart2js_native/internal_library_test.dart
diff --git a/sdk/lib/chrome/dartium/chrome_dartium.dart b/tests/compiler/dart2js_native/internal_library_test.dart
similarity index 57%
copy from sdk/lib/chrome/dartium/chrome_dartium.dart
copy to tests/compiler/dart2js_native/internal_library_test.dart
index c2286553e46c7790c0c932cfb76c98b6266b81d3..d42f826901ce08c51c6b10ebf4d3431b0743d7e7 100644
--- a/sdk/lib/chrome/dartium/chrome_dartium.dart
+++ b/tests/compiler/dart2js_native/internal_library_test.dart
@@ -1,9 +1,12 @@
-library chrome;
-
 // 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.
 
-// DO NOT EDIT
-// Auto-generated dart:chrome library.
+// Test that a private library can be accessed from libraries in this special
+// test folder.
+
+import 'dart:_isolate_helper';
 
+void main() {
+  print(lazyPort);
+}