const google.golang.org/grpc.grpcUA

4 uses

	google.golang.org/grpc (current package)
		clientconn.go#L205: 		cc.dopts.copts.UserAgent += " " + grpcUA
		clientconn.go#L207: 		cc.dopts.copts.UserAgent = grpcUA
		proxy.go#L89: 		Header: map[string][]string{"User-Agent": {grpcUA}},
		rpc_util.go#L883: const grpcUA = "grpc-go/" + Version