WKWebView: Implemented recoverable SSL interstitials.

ios/web/net/cert_host_pair.cc

+// 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.
+
+#include "ios/web/net/cert_host_pair.h"
+
+#include "net/cert/x509_certificate.h"
+
+namespace web {
+
+CertHostPair::CertHostPair(const scoped_refptr<net::X509Certificate>& cert,
+                           const std::string& host)
+    : cert(cert), host(host) {}
+
+CertHostPair::~CertHostPair() {}
+
+bool CertHostPair::operator<(const CertHostPair& other) const {
+  if (host != other.host)
+    return host < other.host;
+  return net::X509Certificate::LessThan()(cert, other.cert);
+}
+
+}  // web