HttpServerProperties - Don't persist if SetServerNetworkStats is called

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 <map>
 #include <string>
 #include "base/basictypes.h"
@@ skipping 165 matching lines @@
     return used_quic == other.used_quic && address == other.address;
   }
 
   bool used_quic;
   std::string address;
 };
 
 struct NET_EXPORT ServerNetworkStats {
   ServerNetworkStats() : bandwidth_estimate(QuicBandwidth::Zero()) {}
 
+  bool operator==(const ServerNetworkStats& other) const {
+    return srtt == other.srtt && bandwidth_estimate == other.bandwidth_estimate;
+  }
+
+  bool operator!=(const ServerNetworkStats& other) const {
+    return !this->operator==(other);
+  }
+
   base::TimeDelta srtt;
   QuicBandwidth bandwidth_estimate;
 };
 
 typedef base::MRUCache<HostPortPair, AlternativeServiceInfo>
     AlternativeServiceMap;
 typedef base::MRUCache<HostPortPair, SettingsMap> SpdySettingsMap;
 typedef base::MRUCache<HostPortPair, ServerNetworkStats> ServerNetworkStatsMap;
 
 extern const char kAlternateProtocolHeader[];
@@ skipping 104 matching lines @@
   virtual void ClearAllSpdySettings() = 0;
 
   // Returns all persistent SPDY settings.
   virtual const SpdySettingsMap& spdy_settings_map() const = 0;
 
   virtual bool GetSupportsQuic(IPAddressNumber* last_address) const = 0;
 
   virtual void SetSupportsQuic(bool used_quic,
                                const IPAddressNumber& last_address) = 0;
 
-  virtual void SetServerNetworkStats(const HostPortPair& host_port_pair,
+  // Sets |stats| for |host_port_pair|. Returns true if |stats| is to be
+  // persisted.
+  virtual bool SetServerNetworkStats(const HostPortPair& host_port_pair,
                                      ServerNetworkStats stats) = 0;
 
   virtual const ServerNetworkStats* GetServerNetworkStats(
       const HostPortPair& host_port_pair) = 0;
 
   virtual const ServerNetworkStatsMap& server_network_stats_map() const = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HttpServerProperties);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_H_