[Sync] Move //sync to //components/sync.

sync/syncable/nigori_handler.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 SYNC_SYNCABLE_NIGORI_HANDLER_H_
-#define SYNC_SYNCABLE_NIGORI_HANDLER_H_
-
-#include <string>
-
-#include "sync/base/sync_export.h"
-#include "sync/internal_api/public/base/model_type.h"
-
-namespace google {
-namespace protobuf {
-template <typename T>
-class RepeatedPtrField;
-}
-}
-
-namespace sync_pb {
-class NigoriSpecifics;
-}
-
-namespace syncer {
-namespace syncable {
-
-class BaseTransaction;
-
-// Sync internal interface for dealing with nigori node and querying
-// the current set of encrypted types. Not thread safe, so a sync transaction
-// must be held by a caller whenever invoking methods.
-class SYNC_EXPORT NigoriHandler {
- public:
-  NigoriHandler();
-  virtual ~NigoriHandler();
-
-  // Apply a nigori node update, updating the internal encryption state
-  // accordingly.
-  virtual void ApplyNigoriUpdate(
-      const sync_pb::NigoriSpecifics& nigori,
-      syncable::BaseTransaction* const trans) = 0;
-
-  // Store the current encrypt everything/encrypted types state into |nigori|.
-  virtual void UpdateNigoriFromEncryptedTypes(
-      sync_pb::NigoriSpecifics* nigori,
-      syncable::BaseTransaction* const trans) const = 0;
-
-  // Whether a keystore key needs to be requested from the sync server.
-  virtual bool NeedKeystoreKey(
-      syncable::BaseTransaction* const trans) const = 0;
-
-  // Set the keystore keys the server returned for this account.
-  // Returns true on success, false otherwise.
-  virtual bool SetKeystoreKeys(
-      const google::protobuf::RepeatedPtrField<std::string>& keys,
-      syncable::BaseTransaction* const trans) = 0;
-
-  // Returns the set of currently encrypted types.
-  virtual ModelTypeSet GetEncryptedTypes(
-      syncable::BaseTransaction* const trans) const = 0;
-};
-
-}  // namespace syncable
-}  // namespace syncer
-
-#endif  // SYNC_SYNCABLE_NIGORI_HANDLER_H_