UPDATE_LOW_GREEN   46 ash/system/tray_update.cc     case ash::UpdateObserver::UPDATE_LOW_GREEN:
UPDATE_LOW_GREEN 1176 chrome/browser/ui/ash/system_tray_delegate_chromeos.cc           severity = ash::UpdateObserver::UPDATE_LOW_GREEN;
UPDATE_LOW_GREEN  325 chrome/browser/ui/ash/system_tray_delegate_win.cc           severity = ash::UpdateObserver::UPDATE_LOW_GREEN;