Added calls for deferred supervised user status change.

components/user_manager/user_manager.cc

Index: components/user_manager/user_manager.cc
diff --git a/components/user_manager/user_manager.cc b/components/user_manager/user_manager.cc
index 597407fa581800990a53f22a873c8beab7a07911..6f27ef4e9e8fbcd0daaf5b2d4d0b6dc8f5a91241 100644
--- a/components/user_manager/user_manager.cc
+++ b/components/user_manager/user_manager.cc
@@ -28,6 +28,10 @@ void UserManager::UserSessionStateObserver::ActiveUserHashChanged(
     const std::string& hash) {
 }
 
+void UserManager::UserSessionStateObserver::UserChangedSupervisedStatus(
+    User* user) {
+}
+
 UserManager::UserSessionStateObserver::~UserSessionStateObserver() {
 }