Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/base/host_port_pair.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_BASE_HOST_PORT_PAIR_H_
 #define NET_BASE_HOST_PORT_PAIR_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 16 matching lines @@
   // Creates a HostPortPair for the origin of |url|.
   static HostPortPair FromURL(const GURL& url);
 
   // Creates a HostPortPair from an IPEndPoint.
   static HostPortPair FromIPEndPoint(const IPEndPoint& ipe);
 
   // Creates a HostPortPair from a string formatted in same manner as
   // ToString().
   static HostPortPair FromString(const std::string& str);
 
-  // Returns the estimate of dynamically allocated memory in bytes.
-  static size_t EstimateMemoryUsage(const HostPortPair& pair);
-
   // TODO(willchan): Define a functor instead.
   // Comparator function so this can be placed in a std::map.
   bool operator<(const HostPortPair& other) const {
     return std::tie(port_, host_) < std::tie(other.port_, other.host_);
   }
 
   // Equality test of contents. (Probably another violation of style guide).
   bool Equals(const HostPortPair& other) const {
     return host_ == other.host_ && port_ == other.port_;
   }
@@ skipping 14 matching lines @@
 
   void set_port(uint16_t in_port) { port_ = in_port; }
 
   // ToString() will convert the HostPortPair to "host:port".  If |host_| is an
   // IPv6 literal, it will add brackets around |host_|.
   std::string ToString() const;
 
   // Returns |host_|, adding IPv6 brackets if needed.
   std::string HostForURL() const;
 
+  // Returns the estimate of dynamically allocated memory in bytes.
+  size_t EstimateMemoryUsage() const;
+
  private:
   // If |host_| represents an IPv6 address, this string will not contain
   // brackets around the address.
   std::string host_;
   uint16_t port_;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_HOST_PORT_PAIR_H_