Delete the ClientSocketPoolHistograms class.

net/socket/ssl_client_socket_pool.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_SOCKET_SSL_CLIENT_SOCKET_POOL_H_
 #define NET_SOCKET_SSL_CLIENT_SOCKET_POOL_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "net/base/privacy_mode.h"
 #include "net/http/http_response_info.h"
 #include "net/socket/client_socket_pool.h"
 #include "net/socket/client_socket_pool_base.h"
-#include "net/socket/client_socket_pool_histograms.h"
 #include "net/socket/ssl_client_socket.h"
 #include "net/ssl/ssl_config_service.h"
 
 namespace net {
 
 class CertPolicyEnforcer;
 class CertVerifier;
 class ClientSocketFactory;
 class ConnectJobFactory;
 class CTVerifier;
@@ skipping 148 matching lines @@
     : public ClientSocketPool,
       public HigherLayeredPool,
       public SSLConfigService::Observer {
  public:
   typedef SSLSocketParams SocketParams;
 
   // Only the pools that will be used are required. i.e. if you never
   // try to create an SSL over SOCKS socket, |socks_pool| may be NULL.
   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,
@@ skipping 33 matching lines @@
   LoadState GetLoadState(const std::string& group_name,
                          const ClientSocketHandle* handle) const override;
 
   base::DictionaryValue* GetInfoAsValue(
       const std::string& name,
       const std::string& type,
       bool include_nested_pools) const override;
 
   base::TimeDelta ConnectionTimeout() const override;
 
-  ClientSocketPoolHistograms* histograms() const override;
-
   // LowerLayeredPool implementation.
   bool IsStalled() const override;
 
   void AddHigherLayeredPool(HigherLayeredPool* higher_pool) override;
 
   void RemoveHigherLayeredPool(HigherLayeredPool* higher_pool) override;
 
   // HigherLayeredPool implementation.
   bool CloseOneIdleConnection() override;
 
@@ skipping 43 matching lines @@
   HttpProxyClientSocketPool* const http_proxy_pool_;
   PoolBase base_;
   const scoped_refptr<SSLConfigService> ssl_config_service_;
 
   DISALLOW_COPY_AND_ASSIGN(SSLClientSocketPool);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SSL_CLIENT_SOCKET_POOL_H_