Add CheckOCSPDateValid() to net/cert/internal

net/der/encode_values.h

+// Copyright 2015 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 NET_DER_ENCODE_VALUES_H_
+#define NET_DER_ENCODE_VALUES_H_
+
+#include "net/base/net_export.h"
+#include "net/der/parse_values.h"
+
+namespace base {
+class Time;
+}
+
+namespace net {
+
+namespace der {
+
+// Encodes |time|, a UTC-based time, to DER |generalized_time|, for comparing
+// against other GeneralizedTime objects.
+NET_EXPORT bool EncodeTimeAsGeneralizedTime(
+    const base::Time& time,
+    der::GeneralizedTime* generalized_time);
+
+}  // namespace der
+
+}  // namespace net
+
+#endif  // NET_DER_ENCODE_VALUES_H