Add OCSPVerifyResult for tracking stapled OCSP responses cross-platform.

net/cert/ocsp_verify_result.cc

+// Copyright 2016 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 "net/cert/ocsp_verify_result.h"
+
+namespace net {
+
+OCSPVerifyResult::OCSPVerifyResult()
+    : response_status(OCSPVerifyResult::MISSING) {}
+
+OCSPVerifyResult::OCSPVerifyResult(const OCSPVerifyResult&) = default;
+
+OCSPVerifyResult::~OCSPVerifyResult() {}
+
+void OCSPVerifyResult::Reset() {
+  response_status = MISSING;
+  cert_status = base::nullopt;
+}
+
+}  // namespace net