Add PyAuto test for DeviceGuestModeEnabled policy

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
index 6a42d60c46fa56c070d0f94d4d44d5a8093a3ddf..bad5406e83ee90fa0c73538aa8e61d6da46773ee 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
@@ -916,6 +916,11 @@ void SigninScreenHandler::HandleAccountPickerReady(
         content::NotificationService::AllSources(),
         content::NotificationService::NoDetails());
   }
+
+  content::NotificationService::current()->Notify(

[Nikita (slow), 2012/05/16 15:56:13]

I don't think that you need that new notification, see another comment in this
file.

[bartfab (slow), 2012/05/16 18:07:10]

Done.

+      chrome::NOTIFICATION_ACCOUNT_PICKER_WEBUI_READY,
+      content::NotificationService::AllSources(),
+      content::NotificationService::NoDetails());
 }
 
 void SigninScreenHandler::HandleLoginWebuiReady(const base::ListValue* args) {