PutUniquePosition  457 sync/engine/syncer_util.cc     entry->PutUniquePosition(entry->GetServerUniquePosition());
PutUniquePosition   54 sync/syncable/mutable_entry.h   void PutUniquePosition(const UniquePosition& value);
PutUniquePosition 1528 sync/syncable/syncable_unittest.cc     child.PutUniquePosition(null_pos);