Test for native class with factory constructors.

tests/language/src/NativeNamedConstructors1FrogTest.js

Index: tests/language/src/NativeNamedConstructors1FrogTest.js
diff --git a/tests/language/src/NativeNamedConstructors1FrogTest.js b/tests/language/src/NativeNamedConstructors1FrogTest.js
new file mode 100644
index 0000000000000000000000000000000000000000..0543905eda854b558f472e158bd32ff97b2d52ab
--- /dev/null
+++ b/tests/language/src/NativeNamedConstructors1FrogTest.js
@@ -0,0 +1,8 @@
+// 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.
+
+// This function models a pre-existing native class e.g. Float32Array.
+function A(value) {
+  this._x = value;
+}