Add utf_string_conversions to base namespace.

chrome/browser/extensions/api/developer_private/developer_private_api.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/api/developer_private/developer_private_api.h"
 
 #include "base/base64.h"
 #include "base/file_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
@@ skipping 617 matching lines @@
   Release();
 }
 
 bool DeveloperPrivatePackDirectoryFunction::RunImpl() {
   int flags;
   EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &item_path_str_));
   EXTENSION_FUNCTION_VALIDATE(args_->GetString(1, &key_path_str_));
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(2, &flags));
 
  base::FilePath root_directory =
-     base::FilePath::FromWStringHack(UTF8ToWide(item_path_str_));
+     base::FilePath::FromWStringHack(base::UTF8ToWide(item_path_str_));
 
  base::FilePath key_file =
-     base::FilePath::FromWStringHack(UTF8ToWide(key_path_str_));
+     base::FilePath::FromWStringHack(base::UTF8ToWide(key_path_str_));
 
   developer::PackDirectoryResponse response;
   if (root_directory.empty()) {
     if (item_path_str_.empty())
       response.message = l10n_util::GetStringUTF8(
           IDS_EXTENSION_PACK_DIALOG_ERROR_ROOT_REQUIRED);
     else
       response.message = l10n_util::GetStringUTF8(
           IDS_EXTENSION_PACK_DIALOG_ERROR_ROOT_INVALID);
 
@@ skipping 152 matching lines @@
 
   #undef   SET_STRING
   return true;
 }
 
 DeveloperPrivateGetStringsFunction::~DeveloperPrivateGetStringsFunction() {}
 
 } // namespace api
 
 } // namespace extensions