Tommi: I need an owner review for the chrome frame changes.

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_H_
+#define BASE_TEST_TEST_REG_UTIL_H_
+#pragma once
+
+// Registry utility functions used only by tests.
+
+#include "base/win/registry.h"
+
+namespace registry_util {
+
+// Allows a test to easily override a known location in the registry so that
+// it can start from a known good state, or make sure to not leave any
+// side effects once the test completes.
+class ScopedRegistryKeyOverride {
+ public:
+  static const wchar_t kTempTestKeyPath[];
+
+  ScopedRegistryKeyOverride(HKEY override, const std::wstring& temp_name);
+  ~ScopedRegistryKeyOverride();
+
+  static void DeleteAllTempKeys();
+
+ protected:
+  HKEY override_;
+  base::win::RegKey temp_key_;
+  std::wstring temp_name_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ScopedRegistryKeyOverride);
+};
+
+// This object can be used to make sure that the temporary registry location
+// used by ScopedRegistryKeyOverride are cleared out before and after the
+// registry is overidden.  Instantiate this class before any instances of
+// ScopedRegistryKeyOverride and destroy it after all instances.
+class ScopedRegistryTempPathCleanup {
+ public:
+  ScopedRegistryTempPathCleanup();
+  ~ScopedRegistryTempPathCleanup();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ScopedRegistryTempPathCleanup);
+};
+
+}  // namespace registry_util
+
+#endif  // BASE_TEST_TEST_REG_UTIL_H_