Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/first_run/first_run.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 "chrome/browser/first_run/first_run.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
@@ skipping 550 matching lines @@
 
   install_prefs.GetString(
       installer::master_preferences::kDistroSuppressDefaultBrowserPromptPref,
       &out_prefs->suppress_default_browser_prompt_for_version);
 }
 
 bool CreateSentinel() {
   base::FilePath first_run_sentinel;
   if (!internal::GetFirstRunSentinelFilePath(&first_run_sentinel))
     return false;
-  return file_util::WriteFile(first_run_sentinel, "", 0) != -1;
+  return base::WriteFile(first_run_sentinel, "", 0) != -1;
 }
 
 // -- Platform-specific functions --
 
 #if !defined(OS_LINUX) && !defined(OS_BSD)
 bool IsOrganicFirstRun() {
   std::string brand;
   google_util::GetBrand(&brand);
   return google_util::IsOrganicFirstRun(brand);
 }
@@ skipping 232 matching lines @@
   SetShouldDoPersonalDataManagerFirstRun();
 
   internal::DoPostImportPlatformSpecificTasks(profile);
 }
 
 uint16 auto_import_state() {
   return g_auto_import_state;
 }
 
 }  // namespace first_run