Delete the ClientSocketPoolHistograms class.

net/socket/websocket_transport_client_socket_pool.cc

 // Copyright 2014 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/websocket_transport_client_socket_pool.h"
 
 #include <algorithm>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
@@ skipping 211 matching lines @@
     OnSubJobComplete(result, ipv4_job_.get());
 }
 
 int WebSocketTransportConnectJob::ConnectInternal() {
   return helper_.DoConnectInternal(this);
 }
 
 WebSocketTransportClientSocketPool::WebSocketTransportClientSocketPool(
     int max_sockets,
     int max_sockets_per_group,
-    ClientSocketPoolHistograms* histograms,
     HostResolver* host_resolver,
     ClientSocketFactory* client_socket_factory,
     NetLog* net_log)
     : TransportClientSocketPool(max_sockets,
                                 max_sockets_per_group,
-                                histograms,
                                 host_resolver,
                                 client_socket_factory,
                                 net_log),
       connect_job_delegate_(this),
-      histograms_(histograms),
       pool_net_log_(net_log),
       client_socket_factory_(client_socket_factory),
       host_resolver_(host_resolver),
       max_sockets_(max_sockets),
       handed_out_socket_count_(0),
       flushing_(false),
       weak_factory_(this) {}
 
 WebSocketTransportClientSocketPool::~WebSocketTransportClientSocketPool() {
   // Clean up any pending connect jobs.
@@ skipping 195 matching lines @@
   dict->SetInteger("max_socket_count", max_sockets_);
   dict->SetInteger("max_sockets_per_group", max_sockets_);
   dict->SetInteger("pool_generation_number", 0);
   return dict;
 }
 
 TimeDelta WebSocketTransportClientSocketPool::ConnectionTimeout() const {
   return TimeDelta::FromSeconds(kTransportConnectJobTimeoutInSeconds);
 }
 
-ClientSocketPoolHistograms* WebSocketTransportClientSocketPool::histograms()
-    const {
-  return histograms_;
-}
-
 bool WebSocketTransportClientSocketPool::IsStalled() const {
   return !stalled_request_queue_.empty();
 }
 
 void WebSocketTransportClientSocketPool::OnConnectJobComplete(
     int result,
     WebSocketTransportConnectJob* job) {
   DCHECK_NE(ERR_IO_PENDING, result);
 
   scoped_ptr<StreamSocket> socket = job->PassSocket();
@@ skipping 174 matching lines @@
     const BoundNetLog& net_log)
     : params(params),
       priority(priority),
       handle(handle),
       callback(callback),
       net_log(net_log) {}
 
 WebSocketTransportClientSocketPool::StalledRequest::~StalledRequest() {}
 
 }  // namespace net