diff -r 000000000000 -r 6474c204b198 ipc/chromium/src/base/rand_util_win.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/chromium/src/base/rand_util_win.cc	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+// Copyright (c) 2008 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/rand_util.h"
+
+#include <stdlib.h>
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+
+namespace {
+
+uint32_t RandUint32() {
+  uint32_t number;
+  CHECK(rand_s(&number) == 0);
+  return number;
+}
+
+}  // namespace
+
+namespace base {
+
+uint64_t RandUint64() {
+  uint32_t first_half = RandUint32();
+  uint32_t second_half = RandUint32();
+  return (static_cast<uint64_t>(first_half) << 32) + second_half;
+}
+
+}  // namespace base