Add WOW64 support to the installer registry work items

chrome/installer/setup/install.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/installer/setup/install.h"
 
 #include <windows.h>
 #include <shlobj.h>
 #include <time.h>
 
@@ skipping 118 matching lines @@
   }
 }
 
 void AddChromeToMediaPlayerList() {
   base::string16 reg_path(installer::kMediaPlayerRegPath);
   // registry paths can also be appended like file system path
   reg_path.push_back(base::FilePath::kSeparators[0]);
   reg_path.append(installer::kChromeExe);
   VLOG(1) << "Adding Chrome to Media player list at " << reg_path;
   scoped_ptr<WorkItem> work_item(WorkItem::CreateCreateRegKeyWorkItem(
-      HKEY_LOCAL_MACHINE, reg_path));
+      HKEY_LOCAL_MACHINE, reg_path, WorkItem::WOW64_DEFAULT));
 
   // if the operation fails we log the error but still continue
   if (!work_item.get()->Do())
     LOG(ERROR) << "Could not add Chrome to media player inclusion list.";
 }
 
 // Copy master_preferences file provided to installer, in the same folder
 // as chrome.exe so Chrome first run can find it. This function will be called
 // only on the first install of Chrome.
 void CopyPreferenceFileForFirstRun(const InstallerState& installer_state,
@@ skipping 546 matching lines @@
   if (app_host_path.empty())
     return false;
 
   CommandLine cmd(app_host_path);
   cmd.AppendSwitchASCII(::switches::kInstallFromWebstore, app_code);
   VLOG(1) << "App install command: " << cmd.GetCommandLineString();
   return base::LaunchProcess(cmd, base::LaunchOptions(), NULL);
 }
 
 }  // namespace installer