SetLastUpdateServerTag 3994 sync/engine/syncer_unittest.cc   mock_server_->SetLastUpdateServerTag("alpha");
SetLastUpdateServerTag 3997 sync/engine/syncer_unittest.cc   mock_server_->SetLastUpdateServerTag("bob");
SetLastUpdateServerTag  152 sync/test/engine/mock_connection_manager.h   void SetLastUpdateServerTag(const std::string& tag);