root/chrome/browser/chromeos/system_logs/

1. command_line_log_source.cc
2. command_line_log_source.h
3. dbus_log_source.cc
4. dbus_log_source.h
5. debug_daemon_log_source.cc
6. debug_daemon_log_source.h
7. lsb_release_log_source.cc
8. lsb_release_log_source.h
9. network_event_log_source.cc
10. network_event_log_source.h
11. touch_log_source.cc
12. touch_log_source.h