Add SessionStateObserver with ActiveUserChanged()

chrome/browser/chromeos/profiles/profile_helper.h

 // Copyright (c) 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_PROFILE_HELPER_H_
 #define CHROME_BROWSER_CHROMEOS_PROFILES_PROFILE_HELPER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 59 matching lines @@
 
   // Clears site data (cookies, history, etc) for signin profile.
   // Callback can be empty. Not thread-safe.
   void ClearSigninProfile(const base::Closure& on_clear_callback);
 
  private:
   friend class ProfileHelperTest;
 
   // UserManager::UserSessionStateObserver implementation:
   virtual void ActiveUserHashChanged(const std::string& hash) OVERRIDE;
-  virtual void PendingUserSessionsRestoreFinished() OVERRIDE;
 
   // BrowsingDataRemover::Observer implementation:
   virtual void OnBrowsingDataRemoverDone() OVERRIDE;
 
   // Identifies path to active user profile on Chrome OS.
   std::string active_user_id_hash_;
 
   // True if signin profile clearing now.
   bool signin_profile_clear_requested_;
 
   // List of callbacks called after signin profile clearance.
   std::vector<base::Closure> on_clear_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileHelper);
 };
 
 } // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_PROFILES_PROFILE_HELPER_H_