Introduce a VM-only dart:scalarlist library for byte arrays.

tests/standalone/byte_array_test.dart

Index: tests/standalone/byte_array_test.dart
diff --git a/tests/standalone/byte_array_test.dart b/tests/standalone/byte_array_test.dart
index 2ca9c7eef6e06773ab8b6dcf475cc21f7b309935..0a98a958f6313cb3a43c02cec784cc118a06ee67 100644
--- a/tests/standalone/byte_array_test.dart
+++ b/tests/standalone/byte_array_test.dart
@@ -1,9 +1,11 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, 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.
 //
 // Dart test program for testing native byte arrays.
 
+#import('dart:scalarlist');
+
 void testCreateByteArray() {
   Uint8List byteArray;