packet {
  trusted_packet_sequence_id: 1
  timestamp: 0
  track_descriptor {
    uuid: 1
    thread {
      pid: 1
      tid: 1
      thread_name: "t1"
    }
  }
}
packet {
  trusted_packet_sequence_id: 1
  timestamp: 0
  track_descriptor {
    uuid: 2
    thread {
      pid: 2
      tid: 2
      thread_name: "t2"
    }
  }
}
packet {
  timestamp: 10000
  trusted_packet_sequence_id: 1
  track_event {
    name: "FlowBeginSlice"
    categories: "test"
    track_uuid: 1
    legacy_event {
      bind_id: 1
      flow_direction: FLOW_OUT
      duration_us: 10
      phase: 88 # 'X'
    }
  }
}
packet {
  timestamp: 30000
  trusted_packet_sequence_id: 1
  track_event {
    name: "FlowEndSlice_1"
    categories: "test"
    track_uuid: 2
    legacy_event {
      bind_id: 1
      flow_direction: FLOW_IN
      duration_us: 10
      phase: 88 # 'X'
    }
  }
}
packet {
  timestamp: 50000
  trusted_packet_sequence_id: 1
  track_event {
    name: "FlowStepSlice"
    categories: "test"
    track_uuid: 1
    legacy_event {
      bind_id: 1
      flow_direction: FLOW_INOUT
      duration_us: 10
      phase: 88 # 'X'
    }
  }
}
packet {
  timestamp: 55000
  trusted_packet_sequence_id: 1
  track_event {
    name: "FlowEndSlice_2"
    categories: "test"
    track_uuid: 2
    legacy_event {
      bind_id: 1
      flow_direction: FLOW_IN
      duration_us: 10
      phase: 88 # 'X'
    }
  }
}