Add operator<<(ostream, AlternativeService) for test output formatting.

net/http/http_server_properties.h

 // 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 NET_HTTP_HTTP_SERVER_PROPERTIES_H_
 #define NET_HTTP_HTTP_SERVER_PROPERTIES_H_
 
 #include <stdint.h>
 
 #include <map>
+#include <ostream>
 #include <string>
 #include <tuple>
 #include <vector>
 
 #include "base/containers/mru_cache.h"
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_export.h"
 #include "net/quic/core/quic_bandwidth.h"
@@ skipping 81 matching lines @@
            std::tie(other.protocol, other.host, other.port);
   }
 
   std::string ToString() const;
 
   NextProto protocol;
   std::string host;
   uint16_t port;
 };
 
+NET_EXPORT_PRIVATE std::ostream& operator<<(
+    std::ostream& os,
+    const AlternativeService& alternative_service);
+
 struct NET_EXPORT AlternativeServiceInfo {
   AlternativeServiceInfo() : alternative_service() {}
 
   AlternativeServiceInfo(const AlternativeService& alternative_service,
                          base::Time expiration)
       : alternative_service(alternative_service),
         expiration(expiration) {}
 
   AlternativeServiceInfo(NextProto protocol,
                          const std::string& host,
@@ skipping 210 matching lines @@
   // Returns whether HttpServerProperties is initialized.
   virtual bool IsInitialized() const = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HttpServerProperties);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_H_