Make omaha, gcapi and uninstall registry accesses use Wow6432Node on 64-bit

chrome/installer/util/product.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/util/product.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 98 matching lines @@
     ::CloseHandle(pi.hProcess);
   }
 
   return success;
 }
 
 bool Product::SetMsiMarker(bool system_install, bool set) const {
   HKEY reg_root = system_install ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
   RegKey client_state_key;
   LONG result = client_state_key.Open(reg_root,
-      distribution_->GetStateKey().c_str(), KEY_READ | KEY_WRITE);
+                                      distribution_->GetStateKey().c_str(),
+                                      KEY_READ | KEY_WRITE | KEY_WOW64_32KEY);
   if (result == ERROR_SUCCESS) {
     result = client_state_key.WriteValue(google_update::kRegMSIField,
                                          set ? 1 : 0);
   }
 
   LOG_IF(ERROR, result != ERROR_SUCCESS) << "Failed to Open or Write MSI value"
       "to client state key. error: " << result;
 
   return (result == ERROR_SUCCESS);
 }
@@ skipping 35 matching lines @@
   if (distribution_->HasUserExperiments()) {
     VLOG(1) << "LaunchUserExperiment status: " << status << " product: "
             << distribution_->GetDisplayName()
             << " system_level: " << system_level;
     operations_->LaunchUserExperiment(
         setup_path, options_, status, system_level);
   }
 }
 
 }  // namespace installer