Delete the ClientSocketPoolHistograms class.

net/socket/transport_client_socket_pool.cc

 // 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.
 
 #include "net/socket/transport_client_socket_pool.h"
 
 #include <algorithm>
 
 #include "base/compiler_specific.h"
 #include "base/lazy_instance.h"
@@ skipping 458 matching lines @@
 
 base::TimeDelta
     TransportClientSocketPool::TransportConnectJobFactory::ConnectionTimeout()
     const {
   return base::TimeDelta::FromSeconds(kTransportConnectJobTimeoutInSeconds);
 }
 
 TransportClientSocketPool::TransportClientSocketPool(
     int max_sockets,
     int max_sockets_per_group,
-    ClientSocketPoolHistograms* histograms,
     HostResolver* host_resolver,
     ClientSocketFactory* client_socket_factory,
     NetLog* net_log)
-    : base_(NULL, max_sockets, max_sockets_per_group, histograms,
+    : base_(NULL,
+            max_sockets,
+            max_sockets_per_group,
             ClientSocketPool::unused_idle_socket_timeout(),
             ClientSocketPool::used_idle_socket_timeout(),
             new TransportConnectJobFactory(client_socket_factory,
-                                           host_resolver, net_log)) {
+                                           host_resolver,
+                                           net_log)) {
   base_.EnableConnectBackupJobs();
 }
 
 TransportClientSocketPool::~TransportClientSocketPool() {}
 
 int TransportClientSocketPool::RequestSocket(
     const std::string& group_name,
     const void* params,
     RequestPriority priority,
     ClientSocketHandle* handle,
@@ skipping 78 matching lines @@
     const std::string& name,
     const std::string& type,
     bool include_nested_pools) const {
   return base_.GetInfoAsValue(name, type);
 }
 
 base::TimeDelta TransportClientSocketPool::ConnectionTimeout() const {
   return base_.ConnectionTimeout();
 }
 
-ClientSocketPoolHistograms* TransportClientSocketPool::histograms() const {
-  return base_.histograms();
-}
-
 bool TransportClientSocketPool::IsStalled() const {
   return base_.IsStalled();
 }
 
 void TransportClientSocketPool::AddHigherLayeredPool(
     HigherLayeredPool* higher_pool) {
   base_.AddHigherLayeredPool(higher_pool);
 }
 
 void TransportClientSocketPool::RemoveHigherLayeredPool(
     HigherLayeredPool* higher_pool) {
   base_.RemoveHigherLayeredPool(higher_pool);
 }
 
 }  // namespace net