[Chrome ELF] New NT registry API.

base/test/test_reg_util_win.h

 // 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.
 
 #ifndef BASE_TEST_TEST_REG_UTIL_WIN_H_
 #define BASE_TEST_TEST_REG_UTIL_WIN_H_
 
 // Registry utility functions used only by tests.
 #include <memory>
 #include <vector>
@@ skipping 20 matching lines @@
 //   - A GUID used for preventing name collisions (although unlikely) between
 //     two RegistryOverrideManagers created with the same timestamp.
 class RegistryOverrideManager {
  public:
   RegistryOverrideManager();
   ~RegistryOverrideManager();
 
   // Override the given registry hive using a randomly generated temporary key.
   // Multiple overrides to the same hive are not supported and lead to undefined
   // behavior.
+  // Optional return of the registry override path.
   void OverrideRegistry(HKEY override);
+  void OverrideRegistry(HKEY override, base::string16* override_path);
 
  private:
   friend class RegistryOverrideManagerTest;
 
   // Keeps track of one override.
   class ScopedRegistryKeyOverride {
    public:
     ScopedRegistryKeyOverride(HKEY override, const base::string16& key_path);
     ~ScopedRegistryKeyOverride();
 
@@ skipping 17 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RegistryOverrideManager);
 };
 
 // Generates a temporary key path that will be eventually deleted
 // automatically if the process crashes.
 base::string16 GenerateTempKeyPath();
 
 }  // namespace registry_util
 
 #endif  // BASE_TEST_TEST_REG_UTIL_WIN_H_