Delete the ClientSocketPoolHistograms class.

net/socket/socket_test_util.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_SOCKET_TEST_UTIL_H_
 #define NET_SOCKET_SOCKET_TEST_UTIL_H_
 
 #include <cstring>
 #include <deque>
 #include <string>
@@ skipping 1140 matching lines @@
 
     scoped_ptr<StreamSocket> socket_;
     ClientSocketHandle* handle_;
     CompletionCallback user_callback_;
 
     DISALLOW_COPY_AND_ASSIGN(MockConnectJob);
   };
 
   MockTransportClientSocketPool(int max_sockets,
                                 int max_sockets_per_group,
-                                ClientSocketPoolHistograms* histograms,
                                 ClientSocketFactory* socket_factory);
 
   ~MockTransportClientSocketPool() override;
 
   RequestPriority last_request_priority() const {
     return last_request_priority_;
   }
   int release_count() const { return release_count_; }
   int cancel_count() const { return cancel_count_; }
 
@@ skipping 70 matching lines @@
   std::vector<DeterministicMockUDPClientSocket*> udp_client_sockets_;
   std::vector<MockSSLClientSocket*> ssl_client_sockets_;
 
   DISALLOW_COPY_AND_ASSIGN(DeterministicMockClientSocketFactory);
 };
 
 class MockSOCKSClientSocketPool : public SOCKSClientSocketPool {
  public:
   MockSOCKSClientSocketPool(int max_sockets,
                             int max_sockets_per_group,
-                            ClientSocketPoolHistograms* histograms,
                             TransportClientSocketPool* transport_pool);
 
   ~MockSOCKSClientSocketPool() override;
 
   // SOCKSClientSocketPool implementation.
   int RequestSocket(const std::string& group_name,
                     const void* socket_params,
                     RequestPriority priority,
                     ClientSocketHandle* handle,
                     const CompletionCallback& callback,
@@ skipping 32 matching lines @@
 
 extern const char kSOCKS5OkRequest[];
 extern const int kSOCKS5OkRequestLength;
 
 extern const char kSOCKS5OkResponse[];
 extern const int kSOCKS5OkResponseLength;
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SOCKET_TEST_UTIL_H_