Make the dart:mojo.internal import configuration specific.

mojo/dart/packages/mojo/test/standalone_test.dart

Index: mojo/dart/packages/mojo/test/standalone_test.dart
diff --git a/mojo/dart/packages/mojo/test/standalone_test.dart b/mojo/dart/packages/mojo/test/standalone_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..62c983e48466444cab526d240e2719b8d319dc10
--- /dev/null
+++ b/mojo/dart/packages/mojo/test/standalone_test.dart
@@ -0,0 +1,27 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Test that an import of 'package:mojo' doesn't fail on the VM.
+import 'package:mojo/core.dart';
+
+shouldThrowUnsupported(description, f) {
+  try {
+    f();
+    throw "$description did not throw as expected.";
+  } catch (e) {
+    if (e is! UnsupportedError) {
+      throw "$description error is not an UnsupportedError $e.";
+    }
+  }
+}
+
+main() {
+  var invalid = new MojoHandle.invalid();
+  shouldThrowUnsupported("getTimeTicksNow()", () => getTimeTicksNow());
+  shouldThrowUnsupported(
+      "MojoMessagePipe allocation", () => new MojoMessagePipe());
+  shouldThrowUnsupported("MojoDataPipe allocation", () => new MojoDataPipe());
+  shouldThrowUnsupported(
+      "MojoSharedBuffer allocation", () => new MojoSharedBuffer.create(1024));
+}