WKWebView: Implemented recoverable SSL interstitials.

ios/web/net/cert_host_pair.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 IOS_WEB_NET_CERT_HOST_PAIR_H_
+#define IOS_WEB_NET_CERT_HOST_PAIR_H_
+
+#include <string>
+
+#include "base/memory/ref_counted.h"
+
+namespace net {
+class X509Certificate;
+}
+
+namespace web {
+
+// Holds certificate-host pair. Implements operator less, hence can act as a key
+// for a container.
+struct CertHostPair {
+  CertHostPair(const scoped_refptr<net::X509Certificate>& cert,
+               const std::string& host);
+  ~CertHostPair();
+
+  bool operator<(const CertHostPair& other) const;
+
+  scoped_refptr<net::X509Certificate> cert;
+  std::string host;
+};
+
+}  // namespace web
+
+#endif  // IOS_WEB_NET_CERT_HOST_PAIR_H_