Cleanup: Use base/files/file_util.h instead of base/file_util.h in apps/ and extensions/

extensions/browser/api/storage/leveldb_settings_storage_factory.cc

 // Copyright 2014 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 "extensions/browser/api/storage/leveldb_settings_storage_factory.h"
 
-#include "base/file_util.h"
+#include "base/files/file_util.h"
 #include "base/logging.h"
 #include "extensions/browser/value_store/leveldb_value_store.h"
 
 namespace extensions {
 
 namespace {
 
 base::FilePath GetDatabasePath(const base::FilePath& base_path,
                                const std::string& extension_id) {
   return base_path.AppendASCII(extension_id);
 }
 
 }  // namespace
 
 ValueStore* LeveldbSettingsStorageFactory::Create(
     const base::FilePath& base_path,
     const std::string& extension_id) {
   return new LeveldbValueStore(GetDatabasePath(base_path, extension_id));
 }
 
 void LeveldbSettingsStorageFactory::DeleteDatabaseIfExists(
     const base::FilePath& base_path,
     const std::string& extension_id) {
   base::FilePath path = GetDatabasePath(base_path, extension_id);
   if (base::PathExists(path))
     base::DeleteFile(path, true /* recursive */);
 }
 
 }  // namespace extensions