Add WOW64 support to the installer registry work items

chrome/installer/util/set_reg_value_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.
 
 #ifndef CHROME_INSTALLER_UTIL_SET_REG_VALUE_WORK_ITEM_H__
 #define CHROME_INSTALLER_UTIL_SET_REG_VALUE_WORK_ITEM_H__
 
 #include <windows.h>
 
 #include <string>
@@ skipping 26 matching lines @@
     // One possible outcome after Do(). No change is applied, either
     // because we are not allowed to overwrite the previous value, or due to
     // some errors like the key does not exist.
     VALUE_UNCHANGED,
     // The status after Do and Rollback is called.
     VALUE_ROLL_BACK
   };
 
   SetRegValueWorkItem(HKEY predefined_root,
                       const std::wstring& key_path,
+                      REGSAM wow64_access,
                       const std::wstring& value_name,
                       const std::wstring& value_data,
                       bool overwrite);
 
-  SetRegValueWorkItem(HKEY predefined_root, const std::wstring& key_path,
-                      const std::wstring& value_name, DWORD value_data,
+  SetRegValueWorkItem(HKEY predefined_root,
+                      const std::wstring& key_path,
+                      REGSAM wow64_access,
+                      const std::wstring& value_name,
+                      DWORD value_data,
                       bool overwrite);
 
-  SetRegValueWorkItem(HKEY predefined_root, const std::wstring& key_path,
-                      const std::wstring& value_name, int64 value_data,
+  SetRegValueWorkItem(HKEY predefined_root,
+                      const std::wstring& key_path,
+                      REGSAM wow64_access,
+                      const std::wstring& value_name,
+                      int64 value_data,
                       bool overwrite);
 
   // Root key of the target key under which the value is set. The root key can
   // only be one of the predefined keys on Windows.
   HKEY predefined_root_;
 
   // Path of the target key under which the value is set.
   std::wstring key_path_;
 
   // Name of the value to be set.
   std::wstring value_name_;
 
   // Whether to overwrite the existing value under the target key.
   bool overwrite_;
 
+  // Whether to force 32-bit or 64-bit view of the target key.
+  REGSAM wow64_access_;
+
   // Type of data to store
   DWORD type_;
   std::vector<uint8> value_;
   DWORD previous_type_;
   std::vector<uint8> previous_value_;
 
   SettingStatus status_;
 };
 
 #endif  // CHROME_INSTALLER_UTIL_SET_REG_VALUE_WORK_ITEM_H__