Add PyAuto test for DeviceGuestModeEnabled policy

chrome/browser/automation/automation_provider_observers_chromeos.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/automation/automation_provider_observers.h"
 
 #include "base/values.h"
 #include "chrome/browser/automation/automation_provider.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/login/authentication_notification_details.h"
@@ skipping 35 matching lines @@
       automation_->OnNetworkLibraryInit();
     delete this;
   }
 }
 
 LoginWebuiReadyObserver::LoginWebuiReadyObserver(
     AutomationProvider* automation)
     : automation_(automation->AsWeakPtr()) {
   registrar_.Add(this, chrome::NOTIFICATION_LOGIN_WEBUI_READY,
                  content::NotificationService::AllSources());
-}
-
-LoginWebuiReadyObserver::~LoginWebuiReadyObserver() {
+  registrar_.Add(this, chrome::NOTIFICATION_ACCOUNT_PICKER_WEBUI_READY,

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

Should add these instead:
NOTIFICATION_LOGIN_USER_IMAGES_LOADED
NOTIFICATION_WIZARD_FIRST_SCREEN_SHOWN

http://code.google.com/codesearch#OAMlx_jo-ck/src/chrome/browser/chromeos/log...

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

Thanks. I had seen that code but did not realize that these are the four
notifications that a browser start into the login manager can end with. Done.

+                 content::NotificationService::AllSources());
 }
 
 void LoginWebuiReadyObserver::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
-  DCHECK(type == chrome::NOTIFICATION_LOGIN_WEBUI_READY);
+  DCHECK(type == chrome::NOTIFICATION_LOGIN_WEBUI_READY ||
+         type == chrome::NOTIFICATION_ACCOUNT_PICKER_WEBUI_READY);
   if (automation_)
     automation_->OnLoginWebuiReady();
   delete this;
 }
 
 LoginObserver::LoginObserver(chromeos::ExistingUserController* controller,
                              AutomationProvider* automation,
                              IPC::Message* reply_message)
     : controller_(controller),
       automation_(automation->AsWeakPtr()),
@@ skipping 377 matching lines @@
 
 void PhotoCaptureObserver::LocalStateChanged(
     chromeos::UserManager* user_manager) {
   user_manager->RemoveObserver(this);
   if (automation_) {
     AutomationJSONReply(
         automation_, reply_message_.release()).SendSuccess(NULL);
   }
   delete this;
 }