#ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_ENGINE_CONTEXT_H_
#define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_ENGINE_CONTEXT_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
namespace base {
class SequencedTaskRunner;
}
namespace drive {
class DriveServiceInterface;
class DriveUploaderInterface;
}
namespace sync_file_system {
class RemoteChangeProcessor;
namespace drive_backend {
class MetadataDatabase;
class SyncEngineContext {
 public:
  SyncEngineContext(scoped_ptr<drive::DriveServiceInterface> drive_service,
                    scoped_ptr<drive::DriveUploaderInterface> drive_uploader,
                    base::SequencedTaskRunner* task_runner);
  ~SyncEngineContext();
  drive::DriveServiceInterface* GetDriveService();
  drive::DriveUploaderInterface* GetDriveUploader();
  MetadataDatabase* GetMetadataDatabase();
  RemoteChangeProcessor* GetRemoteChangeProcessor();
  base::SequencedTaskRunner* GetBlockingTaskRunner();
  void SetMetadataDatabase(scoped_ptr<MetadataDatabase> metadata_database);
  void SetRemoteChangeProcessor(RemoteChangeProcessor* remote_change_processor);
  scoped_ptr<MetadataDatabase> PassMetadataDatabase();
 private:
  scoped_ptr<drive::DriveServiceInterface> drive_service_;
  scoped_ptr<drive::DriveUploaderInterface> drive_uploader_;
  scoped_ptr<MetadataDatabase> metadata_database_;
  RemoteChangeProcessor* remote_change_processor_;  
  scoped_refptr<base::SequencedTaskRunner> task_runner_;
  DISALLOW_COPY_AND_ASSIGN(SyncEngineContext);
};
}  
}  
#endif