[Chrome ELF] New NT registry API.

base/test/test_reg_util_win.cc

 // 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.
 
 #include "base/test/test_reg_util_win.h"
 
 #include <stdint.h>
 
 #include "base/guid.h"
 #include "base/logging.h"
@@ skipping 81 matching lines @@
 RegistryOverrideManager::RegistryOverrideManager(
     const base::Time& timestamp,
     const base::string16& test_key_root)
     : timestamp_(timestamp), test_key_root_(test_key_root) {
   DeleteStaleTestKeys(timestamp_, test_key_root_);
 }
 
 RegistryOverrideManager::~RegistryOverrideManager() {}
 
 void RegistryOverrideManager::OverrideRegistry(HKEY override) {
+  OverrideRegistry(override, nullptr);
+}
+
+void RegistryOverrideManager::OverrideRegistry(HKEY override,
+                                               base::string16* override_path) {
   base::string16 key_path = GenerateTempKeyPath(test_key_root_, timestamp_);
   overrides_.push_back(
       base::WrapUnique(new ScopedRegistryKeyOverride(override, key_path)));
+  if (override_path)
+    override_path->assign(key_path);
 }
 
 base::string16 GenerateTempKeyPath() {
   return GenerateTempKeyPath(base::string16(kTempTestKeyPath),
                              base::Time::Now());
 }
 
 }  // namespace registry_util