Move PathExists to base namespace.

chrome/browser/chromeos/drive/resource_metadata_storage.cc

 // Copyright 2013 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/drive/resource_metadata_storage.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/location.h"
 #include "base/logging.h"
@@ skipping 212 matching lines @@
 
   const base::FilePath resource_map_path =
       directory_path_.Append(kResourceMapDBName);
 
   // Try to open the existing DB.
   leveldb::DB* db = NULL;
   leveldb::Options options;
   options.create_if_missing = false;
 
   DBInitStatus open_existing_result = DB_INIT_NOT_FOUND;
-  if (file_util::PathExists(resource_map_path)) {
+  if (base::PathExists(resource_map_path)) {
     leveldb::Status status =
         leveldb::DB::Open(options, resource_map_path.AsUTF8Unsafe(), &db);
     open_existing_result = LevelDBStatusToDBInitStatus(status);
   }
 
   if (open_existing_result == DB_INIT_SUCCESS) {
     resource_map_.reset(db);
 
     // Check the validity of existing DB.
     ResourceMetadataHeader header;
@@ skipping 364 matching lines @@
   if (!it->status().ok() || num_child_entries != num_entries_with_parent) {
     DLOG(ERROR) << "Error during checking resource map. status = "
                 << it->status().ToString();
     return false;
   }
   return true;
 }
 
 }  // namespace internal
 }  // namespace drive