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

chrome/installer/util/registry_key_backup.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 <stdint.h>
 
 #include <algorithm>
 #include <map>
@@ skipping 266 matching lines @@
 
 bool RegistryKeyBackup::Initialize(HKEY root,
                                    const wchar_t* key_path,
                                    REGSAM wow64_access) {
   DCHECK(key_path);
   DCHECK(wow64_access == 0 ||
          wow64_access == KEY_WOW64_32KEY ||
          wow64_access == KEY_WOW64_64KEY);
 
   RegKey key;
-  scoped_ptr<KeyData> key_data;
+  std::unique_ptr<KeyData> key_data;
 
   // Does the key exist?
   LONG result = key.Open(root, key_path, kKeyReadNoNotify | wow64_access);
   if (result == ERROR_SUCCESS) {
     key_data.reset(new KeyData());
     if (!key_data->Initialize(key)) {
       LOG(ERROR) << "Failed to backup key at " << key_path;
       return false;
     }
   } else if (result != ERROR_FILE_NOT_FOUND) {
@@ skipping 25 matching lines @@
     } else {
       success = key_data_->WriteTo(&dest_key);
       LOG_IF(ERROR, !success) << "Failed to write key data.";
     }
   } else {
     success = true;
   }
 
   return success;
 }