Supplimentary identifier for passwords specific

components/sync/core_impl/sync_encryption_handler_impl.h

 // Copyright 2012 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 COMPONENTS_SYNC_CORE_IMPL_SYNC_ENCRYPTION_HANDLER_IMPL_H_
 #define COMPONENTS_SYNC_CORE_IMPL_SYNC_ENCRYPTION_HANDLER_IMPL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "components/sync/base/cryptographer.h"
 #include "components/sync/core/sync_encryption_handler.h"
 #include "components/sync/syncable/nigori_handler.h"
 
 namespace syncer {
 
 class Encryptor;
 struct UserShare;
 class WriteNode;
 class WriteTransaction;
+enum class PassphraseType;
 
 // Sync encryption handler implementation.
 //
 // This class acts as the respository of all sync encryption state, and handles
 // encryption related changes/queries coming from both the chrome side and
 // the sync side (via NigoriHandler). It is capable of modifying all sync data
 // (re-encryption), updating the encrypted types, changing the encryption keys,
 // and creating/receiving nigori node updates.
 //
 // The class should live as long as the directory itself in order to ensure
@@ skipping 278 matching lines @@
   base::Time custom_passphrase_time_;
 
   base::WeakPtrFactory<SyncEncryptionHandlerImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncEncryptionHandlerImpl);
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_CORE_IMPL_SYNC_ENCRYPTION_HANDLER_IMPL_H_