chromeos: Implement power button animations for Aura.

chrome/browser/chromeos/login/user_manager.h

 // Copyright (c) 2011 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_LOGIN_USER_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 20 matching lines @@
 
 namespace chromeos {
 
 class RemoveUserDelegate;
 
 // This class provides a mechanism for discovering users who have logged
 // into this chromium os device before and updating that list.
 class UserManager : public ProfileDownloaderDelegate,
                     public content::NotificationObserver {
  public:
+  // Email address assigned to the guest/incognito user.
+  static const char kGuestUser[];
+
   // Returns a shared instance of a UserManager. Not thread-safe, should only be
   // called from the main UI thread.
   static UserManager* Get();
 
   // Registers user manager preferences.
   static void RegisterPrefs(PrefService* local_state);
 
   // Returns a list of the users who have logged into this device previously.
   // It is sorted in order of recency, with most recent at the beginning.
   const UserList& GetUsers() const;
@@ skipping 246 matching lines @@
 
   // Data URL for |downloaded_profile_image_|.
   std::string downloaded_profile_image_data_url_;
 
   DISALLOW_COPY_AND_ASSIGN(UserManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_H_