diff -r 000000000000 -r 6474c204b198 security/sandbox/chromium/base/strings/nullable_string16.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/sandbox/chromium/base/strings/nullable_string16.cc	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,17 @@
+// Copyright (c) 2013 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.
+
+#include "base/strings/nullable_string16.h"
+
+#include <ostream>
+
+#include "base/strings/utf_string_conversions.h"
+
+namespace base {
+
+std::ostream& operator<<(std::ostream& out, const NullableString16& value) {
+  return value.is_null() ? out << "(null)" : out << UTF16ToUTF8(value.string());
+}
+
+}  // namespace base