Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/chromeos/policy/user_policy_disk_cache.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/chromeos/policy/user_policy_disk_cache.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/location.h"
 #include "base/logging.h"
@@ skipping 113 matching lines @@
   if (!base::CreateDirectory(backing_file_path_.DirName())) {
     LOG(WARNING) << "Failed to create directory "
                  << backing_file_path_.DirName().value();
     UMA_HISTOGRAM_ENUMERATION(policy::kMetricPolicy,
                               kMetricPolicyStoreFailed,
                               policy::kMetricPolicySize);
     return;
   }
 
   int size = data.size();
-  if (file_util::WriteFile(backing_file_path_, data.c_str(), size) != size) {
+  if (base::WriteFile(backing_file_path_, data.c_str(), size) != size) {
     LOG(WARNING) << "Failed to write " << backing_file_path_.value();
     UMA_HISTOGRAM_ENUMERATION(policy::kMetricPolicy,
                               kMetricPolicyStoreFailed,
                               policy::kMetricPolicySize);
     return;
   }
   UMA_HISTOGRAM_ENUMERATION(policy::kMetricPolicy,
                             kMetricPolicyStoreSucceeded,
                             policy::kMetricPolicySize);
 }
 
 }  // namespace policy