Remove Windows XP specific socket cleanup timer from net/socket.

net/socket/client_socket_pool_base.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.
 //
 // A ClientSocketPoolBase is used to restrict the number of sockets open at
 // a time.  It also maintains a list of idle persistent sockets for reuse.
 // Subclasses of ClientSocketPool should compose ClientSocketPoolBase to handle
 // the core logic of (1) restricting the number of active (connected or
 // connecting) sockets per "group" (generally speaking, the hostname), (2)
 // maintaining a per-group list of idle, persistent sockets for reuse, and (3)
@@ skipping 296 matching lines @@
   int NumConnectJobsInGroup(const std::string& group_name) const {
     return group_map_.find(group_name)->second->jobs().size();
   }
 
   int NumActiveSocketsInGroup(const std::string& group_name) const {
     return group_map_.find(group_name)->second->active_socket_count();
   }
 
   bool HasGroup(const std::string& group_name) const;
 
-  // Called to enable/disable cleaning up idle sockets. When enabled,
-  // idle sockets that have been around for longer than a period defined
-  // by kCleanupInterval are cleaned up using a timer. Otherwise they are
-  // closed next time client makes a request. This may reduce network
-  // activity and power consumption.
-  static bool cleanup_timer_enabled();
-  static bool set_cleanup_timer_enabled(bool enabled);
-
   // Closes all idle sockets if |force| is true.  Else, only closes idle
   // sockets that timed out or can't be reused.  Made public for testing.
   void CleanupIdleSockets(bool force);
 
   // Closes one idle socket.  Picks the first one encountered.
   // TODO(willchan): Consider a better algorithm for doing this.  Perhaps we
   // should keep an ordered list of idle sockets, and close them in order.
   // Requires maintaining more state.  It's not clear if it's worth it since
   // I'm not sure if we hit this situation often.
   bool CloseOneIdleSocket();
@@ skipping 191 matching lines @@
       PendingCallbackMap;
 
   Group* GetOrCreateGroup(const std::string& group_name);
   void RemoveGroup(const std::string& group_name);
   void RemoveGroup(GroupMap::iterator it);
 
   // Called when the number of idle sockets changes.
   void IncrementIdleCount();
   void DecrementIdleCount();
 
-  // Start cleanup timer for idle sockets.
-  void StartIdleSocketTimer();
-
   // Scans the group map for groups which have an available socket slot and
   // at least one pending request. Returns true if any groups are stalled, and
   // if so (and if both |group| and |group_name| are not NULL), fills |group|
   // and |group_name| with data of the stalled group having highest priority.
   bool FindTopStalledGroup(Group** group, std::string* group_name) const;
 
-  // Called when timer_ fires.  This method scans the idle sockets removing
-  // sockets that timed out or can't be reused.
-  void OnCleanupTimerFired() {
-    CleanupIdleSockets(false);
-  }
-
   // Removes |job| from |group|, which must already own |job|.
   void RemoveConnectJob(ConnectJob* job, Group* group);
 
   // Tries to see if we can handle any more requests for |group|.
   void OnAvailableSocketSlot(const std::string& group_name, Group* group);
 
   // Process a pending socket request for a group.
   void ProcessPendingRequest(const std::string& group_name, Group* group);
 
   // Assigns |socket| to |handle| and updates |group|'s counters appropriately.
@@ skipping 57 matching lines @@
   // this pool is stalled.
   void TryToCloseSocketsInLayeredPools();
 
   GroupMap group_map_;
 
   // Map of the ClientSocketHandles for which we have a pending Task to invoke a
   // callback.  This is necessary since, before we invoke said callback, it's
   // possible that the request is cancelled.
   PendingCallbackMap pending_callback_map_;
 
-  // Timer used to periodically prune idle sockets that timed out or can't be
-  // reused.
-  base::RepeatingTimer timer_;
-
   // The total number of idle sockets in the system.
   int idle_socket_count_;
 
   // Number of connecting sockets across all groups.
   int connecting_socket_count_;
 
   // Number of connected sockets we handed out across all groups.
   int handed_out_socket_count_;
 
   // The maximum total number of sockets. See ReachedMaxSocketsLimit.
   const int max_sockets_;
 
   // The maximum number of sockets kept per group.
   const int max_sockets_per_group_;
 
-  // Whether to use timer to cleanup idle sockets.
-  bool use_cleanup_timer_;
-
   // The time to wait until closing idle sockets.
   const base::TimeDelta unused_idle_socket_timeout_;
   const base::TimeDelta used_idle_socket_timeout_;
 
   const std::unique_ptr<ConnectJobFactory> connect_job_factory_;
 
   // TODO(vandebo) Remove when backup jobs move to TransportClientSocketPool
   bool connect_backup_jobs_enabled_;
 
   // A unique id for the pool.  It gets incremented every time we
@@ skipping 229 matching lines @@
   };
 
   internal::ClientSocketPoolBaseHelper helper_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientSocketPoolBase);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_