Allow Registry Iterator functions to use a specified WOW64 mode when iterating.

chrome/installer/util/app_commands.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_APP_COMMANDS_H_
 #define CHROME_INSTALLER_UTIL_APP_COMMANDS_H_
 
 #include <windows.h>
 
 #include <map>
@@ skipping 18 matching lines @@
   typedef std::pair<CommandMap::const_iterator, CommandMap::const_iterator>
       CommandMapRange;
 
   AppCommands();
   ~AppCommands();
 
   // Initialize an instance from the set of commands in a given registry key
   // (typically the "Commands" subkey of a BrowserDistribution's "version key").
   // |key| must have been opened with at least
   // KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE access rights.
-  bool Initialize(const base::win::RegKey& key);
+  // |wow64access| must be one of 0, KEY_WOW64_32KEY or KEY_WOW64_64KEY and
+  // must match the original WOW64 access used to open |key| previously.
+  bool Initialize(const base::win::RegKey& key, REGSAM wow64access);
 
   // Replaces the contents of this object with that of |other|.
   AppCommands& CopyFrom(const AppCommands& other);
 
   // Clears this instance.
   void Clear();
 
   // Retrieves the command identified by |command_id| from the set, copying it
   // into |command| and returning true if present.
   bool Get(const std::wstring& command_id, AppCommand* command) const;
@@ skipping 13 matching lines @@
 
  protected:
   CommandMap commands_;
 
   DISALLOW_COPY_AND_ASSIGN(AppCommands);
 };
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_UTIL_APP_COMMANDS_H_