Fix crash when locking a profile.

chrome/browser/chromeos/profiles/avatar_menu_actions_chromeos.h

 // Copyright 2013 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_CHROMEOS_PROFILES_AVATAR_MENU_ACTIONS_CHROMEOS_H_
 #define CHROME_BROWSER_CHROMEOS_PROFILES_AVATAR_MENU_ACTIONS_CHROMEOS_H_
 
 #include "chrome/browser/profiles/avatar_menu_actions.h"
 
 #include <string>
 
 class Browser;
 
 namespace chromeos {
 
 // This interface controls the behavior of avatar menu actions on ChromeOS.
 class AvatarMenuActionsChromeOS : public AvatarMenuActions {
  public:
   AvatarMenuActionsChromeOS();
   virtual ~AvatarMenuActionsChromeOS();
 
   // AvatarMenuActions overrides:
   virtual void AddNewProfile(ProfileMetrics::ProfileAdd type) OVERRIDE;
   virtual void EditProfile(Profile* profile, size_t index) OVERRIDE;
   virtual bool ShouldShowAddNewProfileLink() const OVERRIDE;
   virtual bool ShouldShowEditProfileLink() const OVERRIDE;
-  virtual content::WebContents* BeginSignOut() OVERRIDE;
-  virtual void SetLogoutURL(const std::string& logout_url) OVERRIDE;
+  virtual void BeginSignOut() OVERRIDE;
   virtual void ActiveBrowserChanged(Browser* browser) OVERRIDE;
 
  private:
   // Browser in which this avatar menu resides. Weak.
   Browser* browser_;
 
   DISALLOW_COPY_AND_ASSIGN(AvatarMenuActionsChromeOS);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_PROFILES_AVATAR_MENU_ACTIONS_CHROMEOS_H_