type net/http.writeRequest

4 uses

	net/http (current package)
		transport.go#L1863: 		writech:           make(chan writeRequest, 1),
		transport.go#L2255: 	writech      chan writeRequest   // written by roundTrip; read by writeLoop
		transport.go#L2937: type writeRequest struct {
		transport.go#L3063: 	pc.writech <- writeRequest{req, writeErrCh, continueCh}