Regkey functions return error code instead of bool

chrome/installer/util/work_item.h

 // 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.
 //
 // Base class for managing an action of a sequence of actions to be carried
 // out during install/update/uninstall. Supports rollback of actions if this
 // process fails.
 
 #ifndef CHROME_INSTALLER_UTIL_WORK_ITEM_H_
 #define CHROME_INSTALLER_UTIL_WORK_ITEM_H_
@@ skipping 64 matching lines @@
 
   // Create a DeleteRegKeyWorkItem that deletes a registry key at the given
   // path.
   static DeleteRegKeyWorkItem* CreateDeleteRegKeyWorkItem(
       HKEY predefined_root, const std::wstring& path);
 
   // Create a DeleteRegValueWorkItem that deletes a registry value
   static DeleteRegValueWorkItem* CreateDeleteRegValueWorkItem(
       HKEY predefined_root,
       const std::wstring& key_path,
-      const std::wstring& value_name,
-      DWORD type);
+      const std::wstring& value_name);
 
   // Create a DeleteTreeWorkItem that recursively deletes a file system
   // hierarchy at the given root path. A key file can be optionally specified
   // by key_path.
   static DeleteTreeWorkItem* CreateDeleteTreeWorkItem(
       const FilePath& root_path, const std::vector<FilePath>& key_paths);
 
   // Create a MoveTreeWorkItem that recursively moves a file system hierarchy
   // from source path to destination path.
   static MoveTreeWorkItem* CreateMoveTreeWorkItem(
@@ skipping 77 matching lines @@
   WorkItem();
 
   // Specifies whether this work item my fail to complete and yet still
   // return true from Do().
   bool ignore_failure_;
 
   std::string log_message_;
 };
 
 #endif  // CHROME_INSTALLER_UTIL_WORK_ITEM_H_