test/trace_processor/trigger_packet_trace.textproto

packet {
  trigger {
    trigger_name: "test1"
    trusted_producer_uid: 3
    producer_name: "producer1"
  }
  timestamp: 101000002
}
packet {
  trigger {
    trigger_name: "test2"
    trusted_producer_uid: 4
    producer_name: "producer2"
  }
  timestamp: 101000004
}