test/trace_processor/dynamic/various_clocks.textproto

packet {
  clock_snapshot {
    clocks {
      clock_id: 1
      timestamp: 0
    }
    clocks {
      clock_id: 6
      timestamp: 10
    }
  }
  trusted_packet_sequence_id: 1
  timestamp: 10
}
packet {
  clock_snapshot {
    clocks {
      clock_id: 1
      timestamp: 1652904000000000000
    }
    clocks {
      clock_id: 6
      timestamp: 20
    }
  }
  trusted_packet_sequence_id: 1
  timestamp: 20
}
packet {
  clock_snapshot {
    clocks {
      clock_id: 1
      timestamp: 1652903999999999995
    }
    clocks {
      clock_id: 6
      timestamp: 30
    }
  }
  trusted_packet_sequence_id: 1
  timestamp: 30
}