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

sync/api/entity_data.h

-// Copyright 2015 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_API_ENTITY_DATA_H_
-#define SYNC_API_ENTITY_DATA_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/time/time.h"
-#include "sync/base/sync_export.h"
-#include "sync/internal_api/public/util/proto_value_ptr.h"
-#include "sync/protocol/sync.pb.h"
-
-namespace syncer_v2 {
-
-struct EntityData;
-
-struct SYNC_EXPORT EntityDataTraits {
-  static void SwapValue(EntityData* dest, EntityData* src);
-  static bool HasValue(const EntityData& value);
-  static const EntityData& DefaultValue();
-};
-
-typedef syncer::ProtoValuePtr<EntityData, EntityDataTraits> EntityDataPtr;
-typedef std::vector<EntityDataPtr> EntityDataList;
-typedef std::map<std::string, EntityDataPtr> EntityDataMap;
-
-// A light-weight container for sync entity data which represents either
-// local data created on the ModelTypeService side or remote data created
-// on ModelTypeWorker.
-// EntityData is supposed to be wrapped and passed by reference.
-struct SYNC_EXPORT EntityData {
- public:
-  EntityData();
-  ~EntityData();
-
-  // Typically this is a server assigned sync ID, although for a local change
-  // that represents a new entity this field might be either empty or contain
-  // a temporary client sync ID.
-  std::string id;
-
-  // A hash based on the client tag and model type.
-  // Used for various map lookups. Should always be available.
-  // Sent to the server as SyncEntity::client_defined_unique_tag.
-  std::string client_tag_hash;
-
-  // Entity name, used mostly for Debug purposes.
-  std::string non_unique_name;
-
-  // Model type specific sync data.
-  sync_pb::EntitySpecifics specifics;
-
-  // Entity creation and modification timestamps.
-  base::Time creation_time;
-  base::Time modification_time;
-
-  // Sync ID of the parent entity. This is supposed to be set only for
-  // hierarchical datatypes (e.g. Bookmarks).
-  std::string parent_id;
-
-  // Unique position of an entity among its siblings. This is supposed to be
-  // set only for datatypes that support positioning (e.g. Bookmarks).
-  sync_pb::UniquePosition unique_position;
-
-  // True if EntityData represents deleted entity; otherwise false.
-  // Note that EntityData would be considered to represent a deletion if its
-  // specifics hasn't been set.
-  bool is_deleted() const { return specifics.ByteSize() == 0; }
-
-  // Transfers this struct's data to EntityDataPtr.
-  // The return value must be assigned into another EntityDataPtr.
-  EntityDataPtr PassToPtr() WARN_UNUSED_RESULT;
-
- private:
-  friend struct EntityDataTraits;
-  // Used to transfer the data without copying.
-  void Swap(EntityData* other);
-
-  DISALLOW_COPY_AND_ASSIGN(EntityData);
-};
-
-}  // namespace syncer_v2
-
-#endif  // SYNC_API_ENTITY_DATA_H_