Add utf_string_conversions to base namespace.

chrome/browser/extensions/app_notification_storage.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/extensions/app_notification_storage.h"
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
@@ skipping 196 matching lines @@
     return true;
 
   // If the file doesn't exist and the caller doesn't want it created, just
   // return early.
   if (!create_if_missing && !file_util::PathExists(path_))
     return true;
 
 #if defined(OS_POSIX)
   std::string os_path = path_.value();
 #elif defined(OS_WIN)
-  std::string os_path = base::SysWideToUTF8(path_.value());
+  std::string os_path = base::Sysbase::WideToUTF8(path_.value());
 #endif
 
   leveldb::Options options;
   options.create_if_missing = true;
   leveldb::DB* db = NULL;
   leveldb::Status status = leveldb::DB::Open(options, os_path, &db);
   if (!status.ok()) {
     LogLevelDbError(FROM_HERE, status);
     return false;
   }
   db_.reset(db);
   return true;
 }
 
 }  // namespace extensions