Move PathExists to base namespace.

chrome/installer/util/move_tree_work_item.cc

 // Copyright (c) 2011 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/installer/util/move_tree_work_item.h"
 
 #include <shlwapi.h>
 
 #include "base/file_util.h"
 #include "base/logging.h"
@@ skipping 10 matching lines @@
     : source_path_(source_path),
       dest_path_(dest_path),
       temp_dir_(temp_dir),
       duplicate_option_(duplicate_option),
       moved_to_dest_path_(false),
       moved_to_backup_(false),
       source_moved_to_backup_(false) {
 }
 
 bool MoveTreeWorkItem::Do() {
-  if (!file_util::PathExists(source_path_)) {
+  if (!base::PathExists(source_path_)) {
     LOG(ERROR) << source_path_.value() << " does not exist";
     return false;
   }
 
   // If dest_path_ exists, we can do one of two things:
   // 1) If the contents of src_path_are already fully contained in dest_path_
   //    then do nothing and return success. Fully contained means the full
   //    file structure with identical files is contained in dest_path_. For
   //    Chrome, if dest_path_ exists, this is expected to be the common case.
   // 2) If the contents of src_path_ are NOT fully contained in dest_path_, we
   //    attempt to backup dest_path_ and replace it with src_path_. This will
   //    fail if files in dest_path_ are in use.
-  if (file_util::PathExists(dest_path_)) {
+  if (base::PathExists(dest_path_)) {
     // Generate a backup path that can keep the original files under dest_path_.
     if (!backup_path_.CreateUniqueTempDirUnderPath(temp_dir_)) {
       PLOG(ERROR) << "Failed to get backup path in folder "
                   << temp_dir_.value();
       return false;
     }
     base::FilePath backup = backup_path_.path().Append(dest_path_.BaseName());
 
     if (duplicate_option_ == CHECK_DUPLICATES) {
       if (installer::IsIdenticalFileHierarchy(source_path_, dest_path_)) {
@@ skipping 53 matching lines @@
   if (moved_to_backup_ && !base::Move(backup, dest_path_)) {
     LOG(ERROR) << "failed move " << backup.value()
                << " to " << dest_path_.value();
   }
 
   if (source_moved_to_backup_ && !base::Move(backup, source_path_)) {
     LOG(ERROR) << "Can not restore " << backup.value()
                << " to " << source_path_.value();
   }
 }