docs: function() {
        this.forEachLine(function(text, eventBase, cpuNumber, pid, ts) {
          var eventName = eventBase.eventName;
          if (eventName !== 'tracing_mark_write' && eventName !== '0')
            return;
          if (traceEventClockSyncRE.exec(eventBase.details))
            this.traceClockSyncEvent(eventName, cpuNumber, pid, ts, eventBase);
          if (realTimeClockSyncRE.exec(eventBase.details)) {
            // This entry maps realtime to clock_monotonic; store in the model
            // so that importers parsing files with realtime timestamps can
            // map this back to monotonic.
            var match = realTimeClockSyncRE.exec(eventBase.details);
            this.model_.realtime_to_monotonic_offset_ms = ts - match[1];
          }
          if (genericClockSyncRE.exec(eventBase.details))
            this.traceClockSyncEvent(eventName, cpuNumber, pid, ts, eventBase);
        }.bind(this));
      }