clang: Fix several -Woverloaded-virtual warnings.

net/http/http_network_transaction_unittest.cc

 // Copyright (c) 2010 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/http/http_network_transaction.h"
 
 #include <math.h>  // ceil
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 253 matching lines @@
                             RequestPriority priority,
                             ClientSocketHandle* handle,
                             CompletionCallback* callback,
                             const BoundNetLog& net_log) {
     last_group_name_ = group_name;
     return ERR_IO_PENDING;
   }
   virtual void CancelRequest(const std::string& group_name,
                              ClientSocketHandle* handle) {}
   virtual void ReleaseSocket(const std::string& group_name,
-                             ClientSocket* socket) {}
+                             ClientSocket* socket,
+                             int id) {}
   virtual void CloseIdleSockets() {}
   virtual int IdleSocketCount() const {
     return 0;
   }
   virtual int IdleSocketCountInGroup(const std::string& group_name) const {
     return 0;
   }
   virtual LoadState GetLoadState(const std::string& group_name,
                                  const ClientSocketHandle* handle) const {
     return LOAD_STATE_IDLE;
@@ skipping 8292 matching lines @@
     // Now that the new handshake has failed, ensure that the client
     // certificate was removed from the client auth cache.
     ASSERT_FALSE(session->ssl_client_auth_cache()->Lookup("proxy:70",
                                                           &client_cert));
     ASSERT_FALSE(session->ssl_client_auth_cache()->Lookup("www.example.com:443",
                                                           &client_cert));
   }
 }
 
 }  // namespace net