Clear cached QUIC network stats when a QUIC handshake fails.

net/http/http_server_properties_impl.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_IMPL_H_
 #define NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 91 matching lines @@
       const AlternativeService& alternative_service) override;
   void ConfirmAlternativeService(
       const AlternativeService& alternative_service) override;
   const AlternativeServiceMap& alternative_service_map() const override;
   std::unique_ptr<base::Value> GetAlternativeServiceInfoAsValue()
       const override;
   bool GetSupportsQuic(IPAddress* last_address) const override;
   void SetSupportsQuic(bool used_quic, const IPAddress& address) override;
   void SetServerNetworkStats(const url::SchemeHostPort& server,
                              ServerNetworkStats stats) override;
+  void ClearServerNetworkStats(const url::SchemeHostPort& server) override;
   const ServerNetworkStats* GetServerNetworkStats(
       const url::SchemeHostPort& server) override;
   const ServerNetworkStatsMap& server_network_stats_map() const override;
   bool SetQuicServerInfo(const QuicServerId& server_id,
                          const std::string& server_info) override;
   const std::string* GetQuicServerInfo(const QuicServerId& server_id) override;
   const QuicServerInfoMap& quic_server_info_map() const override;
   size_t max_server_configs_stored_in_properties() const override;
   void SetMaxServerConfigsStoredInProperties(
       size_t max_server_configs_stored_in_properties) override;
@@ skipping 55 matching lines @@
   size_t max_server_configs_stored_in_properties_;
 
   base::WeakPtrFactory<HttpServerPropertiesImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpServerPropertiesImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_IMPL_H_