message: fix windows build from cl/295978584.
diff: @@ -302,7 +302,9 @@ void DeriveEventsFromHostTrace(const XPlane* host_trace,
  device_plane.GetOrCreateLine(kThreadIdKernelLaunch);
  launch_line.SetName(kDerivedLineKernelLaunch);
  launch_line.SetTimestampNs(std::min(device_plane_start, host_plane_start));
  - for (const auto& [group_id, group_info] : per_device_launch_info[i]) {
  + for (const auto& it : per_device_launch_info[i]) {
  + uint64 group_id = it.first;
  + const GroupLaunchInfo& group_info = it.second;
  if (auto group_name = gtl::FindOrNull(event_group_name_map, group_id)) {
  XEventBuilder device_event =
  launch_line.AddEvent(*device_plane.GetOrCreateEventMetadata(
  