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: 1
  timestamp: 1000
  track_event {
    track_uuid: 1
    categories: "cat"
    name: "name1"
    type: 3
    chrome_user_event {
      action: "NewTab"
    }
  }
}
packet {
  trusted_packet_sequence_id: 1
  timestamp: 2000
  track_event {
    track_uuid: 1
    categories: "cat"
    name: "name2"
    type: 3
    chrome_legacy_ipc {
      message_class: 1
      message_line: 10
    }
  }
}
packet {
  trusted_packet_sequence_id: 1
  timestamp: 3000
  track_event {
    track_uuid: 1
    categories: "cat"
    name: "name3"
    type: 3
    chrome_keyed_service {
      name: "MediaRouter"
    }
  }
}
packet {
  trusted_packet_sequence_id: 1
  timestamp: 4000
  track_event {
    track_uuid: 1
    categories: "cat"
    name: "name4"
    type: 3
    chrome_latency_info {
      trace_id: 7
      component_info {
        component_type: 3
        time_us: 1201
      }
      component_info {
        time_us: 928310
      }
      is_coalesced: true
    }
    [perfetto.protos.TestExtension.string_extension_for_testing]:
        "an extension string!"
    [perfetto.protos.TestExtension.int_extension_for_testing]: 42
    [perfetto.protos.TestExtension.int_extension_for_testing]: 1337
    [perfetto.protos.TestExtension.omitted_extension_for_testing]:
        "should be absent from result"
    [perfetto.protos.TestExtension.nested_message_extension_for_testing] {
      child_field_for_testing: "nesting test"
      debug_annotations {
        name: "arg1"
        string_value: "value"
      }
      debug_annotations {
        name: "arg2"
        dict_entries {
          name: "key"
          string_value: "value"
        }
      }
    }
  }
}
packet {
  trusted_packet_sequence_id: 1
  timestamp: 5000
  extension_descriptor {
    extension_set {
      file {
        package: "perfetto.protos"
        message_type {
          extension {
            name: "string_extension_for_testing"
            extendee: ".perfetto.protos.TrackEvent"
            number: 9900
            type: TYPE_STRING
            label: LABEL_OPTIONAL
          }
          extension {
            name: "int_extension_for_testing"
            extendee: ".perfetto.protos.TrackEvent"
            number: 9901
            type: TYPE_INT32
            label: LABEL_REPEATED
          }
          extension {
            name: "nested_message_extension_for_testing"
            extendee: ".perfetto.protos.TrackEvent"
            number: 9903
            type: TYPE_MESSAGE
            label: LABEL_OPTIONAL
            type_name: ".perfetto.protos.TestExtensionChild"
          }
        }
        message_type {
          name: "TestExtensionChild"
          field {
            name: "child_field_for_testing"
            number: 1
            type: TYPE_STRING
            label: LABEL_OPTIONAL
          }
          field {
            name: "debug_annotations"
            number: 99
            type: TYPE_MESSAGE
            label: LABEL_REPEATED
            type_name: ".perfetto.protos.DebugAnnotation"
          }
        }
      }
    }
  }
}
packet {
  trusted_packet_sequence_id: 1
  timestamp: 6000
  track_event {
    track_uuid: 1
    categories: "cat"
    name: "name5"
    type: 3
    [perfetto.protos.ChromeTrackEvent.chrome_app_state]: APP_STATE_FOREGROUND
  }
}
packet {
  trusted_packet_sequence_id: 1
  timestamp: 7000
  track_event {
    track_uuid: 1
    categories: "cat"
    name: "name6"
    type: 3
    source_location_iid: 1
    [perfetto.protos.ChromeTrackEvent.chrome_memory_pressure_notification] {
      creation_location_iid: 2
    }
  }
  interned_data: {
    source_locations: {
      iid: 1
      file_name: "source.cc"
      function_name: "SourceFunction"
    }
    source_locations: {
      iid: 2
      file_name: "another_source.cc"
      function_name: "AnotherSourceFunction"
      line_number: 1337
    }
  }
}