Reland "Implement random wallpaper feature"

chrome/browser/chromeos/login/user.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_USER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USER_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 21 matching lines @@
     OAUTH_TOKEN_STATUS_VALID   = 2,
   } OAuthTokenStatus;
 
   // Returned as |image_index| when user-selected file or photo is used as
   // user image.
   static const int kExternalImageIndex = -1;
   // Returned as |image_index| when user profile image is used as user image.
   static const int kProfileImageIndex = -2;
   static const int kInvalidImageIndex = -3;
 
+  enum WallpaperType {
+    RANDOM = 0,
+    CUSTOMIZED = 1,
+    DEFAULT = 2,
+    UNKNOWN = 3
+  };
+
   // The email the user used to log in.
   const std::string& email() const { return email_; }
 
   // Returns the name to display for this user.
   std::string GetDisplayName() const;
   // Returns the account name part of the email.
   std::string GetAccountName() const;
 
   // Tooltip contains user's display name and his email domain to distinguish
   // this user from the other one with the same display name.
@@ skipping 62 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(User);
 };
 
 // List of known users.
 typedef std::vector<User*> UserList;
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USER_H_