Remove the configuration of Tether-associated Wi-Fi networks once connectivity is lost.

chrome/browser/chromeos/login/session/user_session_manager.cc

Index: chrome/browser/chromeos/login/session/user_session_manager.cc
diff --git a/chrome/browser/chromeos/login/session/user_session_manager.cc b/chrome/browser/chromeos/login/session/user_session_manager.cc
index 1d6b4e5ae10ae12a9c719d4a7d3c651f57a38561..9b0aa249abd402d50500320bf65335f0026cd9d7 100644
--- a/chrome/browser/chromeos/login/session/user_session_manager.cc
+++ b/chrome/browser/chromeos/login/session/user_session_manager.cc
@@ -1260,6 +1260,7 @@ void UserSessionManager::FinalizePrepareProfile(Profile* profile) {
           std::move(notification_presenter), profile->GetPrefs(),
           ProfileOAuth2TokenServiceFactory::GetForProfile(profile),
           NetworkHandler::Get()->network_state_handler(),
+          NetworkHandler::Get()->managed_network_configuration_handler(),
           NetworkConnect::Get());
     }
   }