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

net/dns/dns_config_service_win.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 "net/dns/dns_config_service_win.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 193 matching lines @@
   if (!policy_reader.ReadDword(L"AppendToMultiLabelName",
                                &settings->append_to_multi_label_name)) {
     return CONFIG_PARSE_WIN_READ_APPEND_MULTILABEL;
   }
 
   if (!primary_dns_suffix_reader.ReadString(L"PrimaryDnsSuffix",
                                             &settings->primary_dns_suffix)) {
     return CONFIG_PARSE_WIN_READ_PRIMARY_SUFFIX;
   }
 
-  base::win::RegistryKeyIterator nrpt_rules(HKEY_LOCAL_MACHINE, kNRPTPath);
+  // This registry key is "shared" between 32-bit and 64-bit hive so safe to
+  // access without any WOW64 access flag. See
+  // http://msdn.microsoft.com/en-us/library/windows/desktop/aa384253.aspx.
+  base::win::RegistryKeyIterator nrpt_rules(HKEY_LOCAL_MACHINE, kNRPTPath, 0);
   settings->have_name_resolution_policy = (nrpt_rules.SubkeyCount() > 0);
 
   return CONFIG_PARSE_WIN_OK;
 }
 
 // Default address of "localhost" and local computer name can be overridden
 // by the HOSTS file, but if it's not there, then we need to fill it in.
 HostsParseWinResult AddLocalhostEntries(DnsHosts* hosts) {
   const unsigned char kIPv4Localhost[] = { 127, 0, 0, 1 };
   const unsigned char kIPv6Localhost[] = { 0, 0, 0, 0, 0, 0, 0, 0,
@@ skipping 534 matching lines @@
 }
 
 }  // namespace internal
 
 // static
 scoped_ptr<DnsConfigService> DnsConfigService::CreateSystemService() {
   return scoped_ptr<DnsConfigService>(new internal::DnsConfigServiceWin());
 }
 
 }  // namespace net