code: func (c *Tracing) RecordClockSyncMarker(syncId string) (*gcdmessage.ChromeResponse, error) {
  	var v TracingRecordClockSyncMarkerParams
  	v.SyncId = syncId
  	return c.RecordClockSyncMarkerWithParams(&v)
  }
docs: // RecordClockSyncMarker - Record a clock sync marker in the trace.
  // syncId - The ID of this clock sync marker