[Sync] Moving DataTypeState to proto for serialization

sync/internal_api/public/non_blocking_sync_common.h

 // Copyright 2014 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_INTERNAL_API_PUBLIC_NON_BLOCKING_SYNC_COMMON_H_
 #define SYNC_INTERNAL_API_PUBLIC_NON_BLOCKING_SYNC_COMMON_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/time/time.h"
 #include "sync/api/entity_data.h"
 #include "sync/base/sync_export.h"
 #include "sync/protocol/sync.pb.h"
 
 namespace syncer_v2 {
 
 static const int64_t kUncommittedVersion = -1;
 
-// Data-type global state that must be accessed and updated on the sync thread,
-// but persisted on or through the model thread.
-struct SYNC_EXPORT DataTypeState {
-  DataTypeState();
-  ~DataTypeState();
-
-  // The latest progress markers received from the server.
-  sync_pb::DataTypeProgressMarker progress_marker;
-
-  // A data type context.  Sent to the server in every commit or update
-  // request.  May be updated by either by responses from the server or
-  // requests made on the model thread.  The interpretation of this value may
-  // be data-type specific.  Many data types ignore it.
-  sync_pb::DataTypeContext type_context;
-
-  // This value is set if this type's data should be encrypted on the server.
-  // If this key changes, the client will need to re-commit all of its local
-  // data to the server using the new encryption key.
-  std::string encryption_key_name;
-
-  // This flag is set to true when the first download cycle is complete.  The
-  // ModelTypeProcessor should not attempt to commit any items until this
-  // flag is set.
-  bool initial_sync_done = false;
-};
-
 struct SYNC_EXPORT CommitRequestData {
   CommitRequestData();
   ~CommitRequestData();
 
   EntityDataPtr entity;
 
   // Strictly incrementing number for in-progress commits.  More information
   // about its meaning can be found in comments in the files that make use of
   // this struct.
   int64_t sequence_number = 0;
@@ skipping 20 matching lines @@
   std::string encryption_key_name;
 };
 
 typedef std::vector<CommitRequestData> CommitRequestDataList;
 typedef std::vector<CommitResponseData> CommitResponseDataList;
 typedef std::vector<UpdateResponseData> UpdateResponseDataList;
 
 }  // namespace syncer_v2
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_NON_BLOCKING_SYNC_COMMON_H_