Move PathExists to base namespace.

chrome/installer/util/delete_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/delete_tree_work_item.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/file_util.h"
@@ skipping 90 matching lines @@
 
   std::for_each(opened_key_files.begin(), opened_key_files.end(), CloseHandle);
   opened_key_files.clear();
 
   if (abort) {
     LOG(ERROR) << "Could not exclusively hold all key files.";
     return ignore_failure_;
   }
 
   // Now that we've taken care of the key files, take care of the rest.
-  if (!root_path_.empty() && file_util::PathExists(root_path_)) {
+  if (!root_path_.empty() && base::PathExists(root_path_)) {
     if (!ignore_failure_) {
       if (!backup_path_.CreateUniqueTempDirUnderPath(temp_path_)) {
         PLOG(ERROR) << "Failed to get backup path in folder "
                     << temp_path_.value();
         return false;
       } else {
         base::FilePath backup =
             backup_path_.path().Append(root_path_.BaseName());
         if (!base::CopyDirectory(root_path_, backup, true)) {
           LOG(ERROR) << "can not copy " << root_path_.value()
@@ skipping 14 matching lines @@
 }
 
 // If there are files in backup paths move them back.
 void DeleteTreeWorkItem::Rollback() {
   if (ignore_failure_)
     return;
 
   if (copied_to_backup_) {
     DCHECK(!backup_path_.path().empty());
     base::FilePath backup = backup_path_.path().Append(root_path_.BaseName());
-    if (file_util::PathExists(backup))
+    if (base::PathExists(backup))
       base::Move(backup, root_path_);
   }
 
   for (ptrdiff_t i = 0; i != num_key_files_; ++i) {
     base::ScopedTempDir& backup_dir = key_backup_paths_[i];
     if (!backup_dir.path().empty()) {
       base::FilePath& key_file = key_paths_[i];
       base::FilePath backup_file =
           backup_dir.path().Append(key_file.BaseName());
-      if (file_util::PathExists(backup_file) &&
+      if (base::PathExists(backup_file) &&
           !base::Move(backup_file, key_file)) {
         // This could happen if we could not delete the key file to begin with.
         PLOG(WARNING) << "Rollback: Failed to move backup file back in place: "
                       << backup_file.value() << " to " << key_file.value();
       }
     }
   }
 }