Add WOW64 support to the installer registry work items

chrome/test/mini_installer_test/installer_test_util.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/test/mini_installer_test/installer_test_util.h"
 
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/process/kill.h"
 #include "base/process/launch.h"
@@ skipping 47 matching lines @@
   bool has_install_dir = GetInstallDirectory(system_level,
                                              ToBrowserDistributionType(type),
                                              &path);
   if (!has_install_dir || !base::PathExists(path))
     return false;
   path = path.AppendASCII(version);
   return base::DeleteFile(path, true);
 }
 
 bool DeleteRegistryKey(bool system_level,
-                       InstallationValidator::InstallationType type) {
+                       InstallationValidator::InstallationType type,
+                       REGSAM wow64_access) {
   BrowserDistribution* dist = BrowserDistribution::GetSpecificDistribution(
       ToBrowserDistributionType(type));
   base::FilePath::StringType key(google_update::kRegPathClients);
   key.push_back(base::FilePath::kSeparators[0]);
   key.append(dist->GetAppGuid());
   HKEY root = system_level ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
-  return InstallUtil::DeleteRegistryKey(root, key);
+  LONG result = InstallUtil::DeleteRegistryKey(root, key, wow64_access);
+  return (result == ERROR_SUCCESS || result == ERROR_FILE_NOT_FOUND);
 }
 
 bool GetChromeInstallDirectory(bool system_level, base::FilePath* path) {
   return GetInstallDirectory(system_level,
       BrowserDistribution::CHROME_BROWSER, path);
 }
 
 bool GetInstallDirectory(bool system_level,
                          BrowserDistribution::Type type, base::FilePath* path) {
   BrowserDistribution* dist =
@@ skipping 204 matching lines @@
     return false;
   }
   if (!base::WaitForSingleProcess(process, base::TimeDelta::FromMinutes(1))) {
     LOG(ERROR) << "Launched process did not complete.";
     return false;
   }
   return true;
 }
 
 }  // namespace