diff -r 000000000000 -r 6474c204b198 security/sandbox/chromium/base/os_compat_nacl.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/sandbox/chromium/base/os_compat_nacl.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+// Copyright (c) 2012 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.
+
+#ifndef BASE_OS_COMPAT_NACL_H_
+#define BASE_OS_COMPAT_NACL_H_
+
+#include <sys/types.h>
+
+#if !defined (__GLIBC__)
+// NaCl has no timegm().
+extern "C" time_t timegm(struct tm* const t);
+#endif  // !defined (__GLIBC__)
+
+#endif  // BASE_OS_COMPAT_NACL_H_
+