ipc: remove unused variable from CreateClientUnixDomainSocket() function

ipc/unix_domain_socket_util.cc

 // Copyright 2013 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 "ipc/unix_domain_socket_util.h"
 
 #include <errno.h>
-#include <stddef.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/un.h>
 #include <unistd.h>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
@@ skipping 92 matching lines @@
   }
 
   *server_listen_fd = fd.release();
   return true;
 }
 
 bool CreateClientUnixDomainSocket(const base::FilePath& socket_path,
                                   int* client_socket) {
   DCHECK(client_socket);
 
-  std::string socket_name = socket_path.value();
-  base::FilePath socket_dir = socket_path.DirName();
-
   struct sockaddr_un unix_addr;
   size_t unix_addr_len;
   base::ScopedFD fd(
-      MakeUnixAddrForPath(socket_name, &unix_addr, &unix_addr_len));
+      MakeUnixAddrForPath(socket_path.value(), &unix_addr, &unix_addr_len));
   if (!fd.is_valid())
     return false;
 
   if (HANDLE_EINTR(connect(fd.get(), reinterpret_cast<sockaddr*>(&unix_addr),
                            unix_addr_len)) < 0) {
     PLOG(ERROR) << "connect " << socket_path.value();
     return false;
   }
 
   *client_socket = fd.release();
@@ skipping 55 matching lines @@
     // It's safe to keep listening on |server_listen_fd| even if the attempt to
     // set O_NONBLOCK failed on the client fd.
     return true;
   }
 
   *server_socket = accept_fd.release();
   return true;
 }
 
 }  // namespace IPC