Convert //chrome/installer from scoped_ptr to std::unique_ptr

chrome/installer/util/registry_key_backup_unittest.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 "chrome/installer/util/registry_key_backup.h"
+
 #include <windows.h>
 
+#include <memory>
+
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/win/registry.h"
-#include "chrome/installer/util/registry_key_backup.h"
 #include "chrome/installer/util/registry_test_data.h"
 #include "chrome/installer/util/work_item.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::win::RegKey;
 
 class RegistryKeyBackupTest : public testing::Test {
  protected:
   static void TearDownTestCase() {
     logging::CloseLogFile();
@@ skipping 66 matching lines @@
   // Now make sure the one we started with is truly empty.
   EXPECT_EQ(ERROR_SUCCESS,
             RegKey(test_data_.root_key(), L"", KEY_QUERY_VALUE)
                 .DeleteKey(destination_path_.c_str()));
   EXPECT_TRUE(backup.WriteTo(test_data_.root_key(),
                              destination_path_.c_str(),
                              WorkItem::kWow64Default));
   EXPECT_FALSE(RegKey(test_data_.root_key(), destination_path_.c_str(),
                       KEY_READ).Valid());
 }