packet {
  trusted_packet_sequence_id: 1
  timestamp: 0
  incremental_state_cleared: true
  track_descriptor {
    uuid: 1
    thread {
      pid: 5
      tid: 1
      thread_name: "t1"
    }
  }
}
packet {
  trusted_packet_sequence_id: 2
  timestamp: 0
  incremental_state_cleared: true
  track_descriptor {
    uuid: 1
    thread {
      pid: 5
      tid: 5
      thread_name: "t1"
    }
  }
}
packet {
  # Emitted on tid 1.
  # BEGIN parent 1
  trusted_packet_sequence_id: 1
  timestamp: 1000
  track_event {
    categories: "cat"
    name: "name1"
    debug_annotations {
      name: "arg1"
      string_value: "value1"
    }
    legacy_event {
      phase: 83  # 'S'
      global_id: 1234
    }
  }
}
packet {
  # Emitted on tid 5.
  # BEGIN parent 2
  trusted_packet_sequence_id: 2
  timestamp: 2000
  track_event {
    categories: "cat"
    name: "name1"
    legacy_event {
      phase: 83  # 'S'
      global_id: 1234
    }
  }
}
packet {
  # Emitted on tid 5.
  # END parent 2
  trusted_packet_sequence_id: 2
  timestamp: 3000
  track_event {
    categories: "cat"
    name: "name1"
    legacy_event {
      phase: 70  # 'F'
      global_id: 1234
    }
  }
}
packet {
  # Emitted on tid 1.
  # END parent 1
  trusted_packet_sequence_id: 1
  timestamp: 8000
  track_event {
    categories: "cat"
    name: "name1"
    debug_annotations {
      name: "arg2"
      string_value: "value2"
    }
    legacy_event {
      phase: 70  # 'F'
      global_id: 1234
    }
  }
}
packet {
  # Emitted on tid 1.
  trusted_packet_sequence_id: 1
  timestamp: 3000
  track_event {
    categories: "cat"
    name: "name1"
    debug_annotations {
      name: "arg3"
      string_value: "value3"
    }
    debug_annotations {
      name: "step"
      string_value: "Step1"
    }
    legacy_event {
      phase: 84  # 'T'
      global_id: 1234
    }
  }
}
packet {
  # Emitted on tid 1.
  trusted_packet_sequence_id: 1
  timestamp: 5000
  track_event {
    categories: "cat"
    name: "name1"
    debug_annotations {
      name: "arg4"
      string_value: "value4"
    }
    debug_annotations {
      name: "step"
      string_value: "Step2"
    }
    legacy_event {
      phase: 112  # 'p'
      global_id: 1234
    }
  }
}