Move PathIsWritable, DirectoryExists, ContentsEqual, and TextContentsEqual to the base namespace.

cloud_print/virtual_driver/win/port_monitor/port_monitor.cc

 // 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.
 
 #include "cloud_print/virtual_driver/win/port_monitor/port_monitor.h"
 
 #include <lmcons.h>
 #include <shellapi.h>
 #include <shlobj.h>
 #include <strsafe.h>
@@ skipping 292 matching lines @@
 
 base::FilePath GetChromeExePath() {
   base::FilePath path = ReadPathFromAnyRegistry(kChromeExePathRegValue);
   if (!path.empty())
     return path;
   return chrome_launcher_support::GetAnyChromePath();
 }
 
 base::FilePath GetChromeProfilePath() {
   base::FilePath path = ReadPathFromAnyRegistry(kChromeProfilePathRegValue);
-  if (!path.empty() && file_util::DirectoryExists(path))
+  if (!path.empty() && base::DirectoryExists(path))
     return path;
   return base::FilePath();
 }
 
 BOOL WINAPI Monitor2EnumPorts(HANDLE,
                               wchar_t*,
                               DWORD level,
                               BYTE*  ports,
                               DWORD   ports_size,
                               DWORD* needed_bytes,
@@ skipping 313 matching lines @@
     SetLastError(ERROR_INVALID_PARAMETER);
     return NULL;
   }
   return &cloud_print::g_monitor_2;
 }
 
 MONITORUI* WINAPI InitializePrintMonitorUI(void) {
   return &cloud_print::g_monitor_ui;
 }