Split dart:builtin into dart:builtin and dart:io.

tests/standalone/src/ListInputStreamTest.dart

Index: tests/standalone/src/ListInputStreamTest.dart
diff --git a/tests/standalone/src/ListInputStreamTest.dart b/tests/standalone/src/ListInputStreamTest.dart
index b38b2d80662792b421095ad2b5d5bce64d4008f8..39bb2b63bebe8f2518cd4d4dabfe3ab4914a0660 100644
--- a/tests/standalone/src/ListInputStreamTest.dart
+++ b/tests/standalone/src/ListInputStreamTest.dart
@@ -1,7 +1,9 @@
-// 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.
 
+#import("dart:io");
+
 void testEmptyListInputStream() {
   InputStream stream = new ListInputStream([]);
   ReceivePort donePort = new ReceivePort();