Fix crash in guest mode

chrome/browser/ui/views/profiles/profile_chooser_view.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_PROFILES_PROFILE_CHOOSER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_PROFILES_PROFILE_CHOOSER_VIEW_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 164 matching lines @@
   views::View*  CreateTutorialView(
       profiles::TutorialMode tutorial_mode,
       const base::string16& title_text,
       const base::string16& content_text,
       const base::string16& link_text,
       const base::string16& button_text,
       views::Link** link,
       views::LabelButton** button);
 
   // Create a view that shows various options for an upgrade user who is not
-  // the same person as the currently signed in user |avatar_item|.
-  views::View* CreateSwitchUserView(const AvatarMenu::Item& avatar_item);
+  // the same person as the currently signed in user.
+  views::View* CreateSwitchUserView();
 
   bool ShouldShowGoIncognito() const;
 
   // Clean-up done after an action was performed in the ProfileChooser.
   void PostActionPerformed(ProfileMetrics::ProfileDesktopMenu action_performed);
 
   scoped_ptr<AvatarMenu> avatar_menu_;
   Browser* browser_;
 
   // Other profiles used in the "fast profile switcher" view.
@@ skipping 46 matching lines @@
   // The current tutorial mode.
   profiles::TutorialMode tutorial_mode_;
 
   // The GAIA service type provided in the response header.
   signin::GAIAServiceType gaia_service_type_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileChooserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PROFILES_PROFILE_CHOOSER_VIEW_H_