cups_proxy/docs/cups_proxy_control_flow.gv

digraph {
  "Plugin VM" -> "CupsProxyDaemon (cups_proxy)" -> "CupsProxyService (chrome)" -> "CUPS Daemon (cupsd)"
  "CUPS Daemon (cupsd)" -> "CupsProxyService (chrome)" -> "CupsProxyDaemon (cups_proxy)" -> "Plugin VM"
}