Delete the ClientSocketPoolHistograms class.

net/socket/ssl_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/ssl_client_socket_pool.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
@@ skipping 487 matching lines @@
   timeout_ = max_transport_timeout +
       base::TimeDelta::FromSeconds(kSSLHandshakeTimeoutInSeconds);
 }
 
 SSLClientSocketPool::SSLConnectJobFactory::~SSLConnectJobFactory() {
 }
 
 SSLClientSocketPool::SSLClientSocketPool(
     int max_sockets,
     int max_sockets_per_group,
-    ClientSocketPoolHistograms* histograms,
     CertVerifier* cert_verifier,
     ChannelIDService* channel_id_service,
     TransportSecurityState* transport_security_state,
     CTVerifier* cert_transparency_verifier,
     CertPolicyEnforcer* cert_policy_enforcer,
     const std::string& ssl_session_cache_shard,
     ClientSocketFactory* client_socket_factory,
     TransportClientSocketPool* transport_pool,
     SOCKSClientSocketPool* socks_pool,
     HttpProxyClientSocketPool* http_proxy_pool,
     SSLConfigService* ssl_config_service,
     NetLog* net_log)
     : transport_pool_(transport_pool),
       socks_pool_(socks_pool),
       http_proxy_pool_(http_proxy_pool),
       base_(this,
             max_sockets,
             max_sockets_per_group,
-            histograms,
             ClientSocketPool::unused_idle_socket_timeout(),
             ClientSocketPool::used_idle_socket_timeout(),
             new SSLConnectJobFactory(
                 transport_pool,
                 socks_pool,
                 http_proxy_pool,
                 client_socket_factory,
                 SSLClientSocketContext(cert_verifier,
                                        channel_id_service,
                                        transport_security_state,
@@ skipping 120 matching lines @@
     }
     dict->Set("nested_pools", list);
   }
   return dict;
 }
 
 base::TimeDelta SSLClientSocketPool::ConnectionTimeout() const {
   return base_.ConnectionTimeout();
 }
 
-ClientSocketPoolHistograms* SSLClientSocketPool::histograms() const {
-  return base_.histograms();
-}
-
 bool SSLClientSocketPool::IsStalled() const {
   return base_.IsStalled();
 }
 
 void SSLClientSocketPool::AddHigherLayeredPool(HigherLayeredPool* higher_pool) {
   base_.AddHigherLayeredPool(higher_pool);
 }
 
 void SSLClientSocketPool::RemoveHigherLayeredPool(
     HigherLayeredPool* higher_pool) {
   base_.RemoveHigherLayeredPool(higher_pool);
 }
 
 bool SSLClientSocketPool::CloseOneIdleConnection() {
   if (base_.CloseOneIdleSocket())
     return true;
   return base_.CloseOneIdleConnectionInHigherLayeredPool();
 }
 
 void SSLClientSocketPool::OnSSLConfigChanged() {
   FlushWithError(ERR_NETWORK_CHANGED);
 }
 
 }  // namespace net