Implement a bag of chips for sync.

sync/engine/process_commit_response_command.h

 // Copyright (c) 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_ENGINE_PROCESS_COMMIT_RESPONSE_COMMAND_H_
 #define SYNC_ENGINE_PROCESS_COMMIT_RESPONSE_COMMAND_H_
 
 #include <set>
 #include <string>
 
@@ skipping 38 matching lines @@
   //
   // The commit_response parameter contains the response received from the
   // server.  This may be uninitialized if we were unable to contact the server
   // or a serious error was encountered.
   ProcessCommitResponseCommand(
       const sessions::OrderedCommitSet& commit_set,
       const sync_pb::ClientToServerMessage& commit_message,
       const sync_pb::ClientToServerResponse& commit_response);
   virtual ~ProcessCommitResponseCommand();
 
+  // SyncerCommand override
+  virtual SyncerError ExecuteImpl(sessions::SyncSession* session) OVERRIDE;
+
  protected:
   // ModelChangingSyncerCommand implementation.
   virtual std::set<ModelSafeGroup> GetGroupsToChange(
       const sessions::SyncSession& session) const OVERRIDE;
   virtual SyncerError ModelChangingExecuteImpl(
       sessions::SyncSession* session) OVERRIDE;
 
  private:
   sync_pb::CommitResponse::ResponseType ProcessSingleCommitResponse(
       syncable::WriteTransaction* trans,
@@ skipping 57 matching lines @@
   const sessions::OrderedCommitSet& commit_set_;
   const sync_pb::ClientToServerMessage& commit_message_;
   const sync_pb::ClientToServerResponse& commit_response_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessCommitResponseCommand);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_ENGINE_PROCESS_COMMIT_RESPONSE_COMMAND_H_