Add test for showing confirmation dialog for unsecure signin

chrome/browser/ui/webui/signin/login_ui_service.cc

Index: chrome/browser/ui/webui/signin/login_ui_service.cc
diff --git a/chrome/browser/ui/webui/signin/login_ui_service.cc b/chrome/browser/ui/webui/signin/login_ui_service.cc
index 159cb74c62d1b4710d9f4950ebb44720c6a7d697..0325c408d58daea0522a7b029c5682a068247eb0 100644
--- a/chrome/browser/ui/webui/signin/login_ui_service.cc
+++ b/chrome/browser/ui/webui/signin/login_ui_service.cc
@@ -56,6 +56,10 @@ void LoginUIService::SyncConfirmationUIClosed(bool configure_sync_first) {
       OnSyncConfirmationUIClosed(configure_sync_first));
 }
 
+void LoginUIService::UntrustedLoginUIShown() {
+  FOR_EACH_OBSERVER(Observer, observer_list_, OnUntrustedLoginUIShown());
+}
+
 void LoginUIService::ShowLoginPopup() {
 #if defined(OS_CHROMEOS)
   if (chrome::IsRunningInForcedAppMode())