Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/proxy/proxy_server.h

 // Copyright (c) 2011 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_PROXY_PROXY_SERVER_H_
 #define NET_PROXY_PROXY_SERVER_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_MACOSX)
@@ skipping 137 matching lines @@
     return scheme_ == other.scheme_ &&
            host_port_pair_.Equals(other.host_port_pair_);
   }
 
   // Comparator function so this can be placed in a std::map.
   bool operator<(const ProxyServer& other) const {
     return std::tie(scheme_, host_port_pair_) <
            std::tie(other.scheme_, other.host_port_pair_);
   }
 
+  // Returns the estimate of dynamically allocated memory in bytes.
+  size_t EstimateMemoryUsage() const;
+
  private:
   // Creates a ProxyServer given a scheme, and host/port string. If parsing the
   // host/port string fails, the returned instance will be invalid.
   static ProxyServer FromSchemeHostAndPort(
       Scheme scheme,
       std::string::const_iterator host_and_port_begin,
       std::string::const_iterator host_and_port_end);
 
   Scheme scheme_;
   HostPortPair host_port_pair_;
 };
 
 typedef std::pair<HostPortPair, ProxyServer> HostPortProxyPair;
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_SERVER_H_