Move file_util to base/files/ directory.

base/posix/unix_domain_socket_linux_unittest.cc

 // Copyright (c) 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 <sys/socket.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
-#include "base/file_util.h"
+#include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/memory/scoped_vector.h"
 #include "base/pickle.h"
 #include "base/posix/unix_domain_socket_linux.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 
@@ skipping 130 matching lines @@
   const ssize_t nread = UnixDomainSocket::RecvMsgWithPid(
       recv_sock.get(), &ch, sizeof(ch), &recv_fds, &sender_pid);
   ASSERT_EQ(0, nread);
   ASSERT_EQ(-1, sender_pid);
   ASSERT_EQ(0U, recv_fds.size());
 }
 
 }  // namespace
 
 }  // namespace base