Implement user selected wallpaper feature.

chrome/browser/chromeos/login/user_manager.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_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 150 matching lines @@
   // Sets user image to the default image with index |image_index|, sends
   // LOGIN_USER_IMAGE_CHANGED notification and updates Local State.
   virtual void SaveUserDefaultImageIndex(const std::string& username,
                                          int image_index) = 0;
 
   // Saves image to file, sends LOGIN_USER_IMAGE_CHANGED notification and
   // updates Local State.
   virtual void SaveUserImage(const std::string& username,
                              const SkBitmap& image) = 0;
 
+  // Update custom wallpaper to selected layout and saves layout to Local
+  // State.
+  virtual void SetLoggedInUserCustomWallpaperLayout(
+      ash::WallpaperLayout layout) = 0;
+
   // Tries to load user image from disk; if successful, sets it for the user,
   // sends LOGIN_USER_IMAGE_CHANGED notification and updates Local State.
   virtual void SaveUserImageFromFile(const std::string& username,
                                      const FilePath& path) = 0;
 
+  // Tries to load user image from disk; if successful, sets it for the user,
+  // and updates Local State.
+  virtual void SaveUserWallpaperFromFile(const std::string& username,
+                                         const FilePath& path,
+                                         ash::WallpaperLayout layout) = 0;
+
   // Sets profile image as user image for |username|, sends
   // LOGIN_USER_IMAGE_CHANGED notification and updates Local State. If the user
   // is not logged-in or the last |DownloadProfileImage| call has failed, a
   // default grey avatar will be used until the user logs in and profile image
   // is downloaded successfuly.
   virtual void SaveUserImageFromProfileImage(const std::string& username) = 0;
 
   // Starts downloading the profile image for the logged-in user.
   // If user's image index is |kProfileImageIndex|, newly downloaded image
   // is immediately set as user's current picture.
@@ skipping 31 matching lines @@
   virtual void NotifyLocalStateChanged() = 0;
 
   // Returns the result of the last successful profile image download, if any.
   // Otherwise, returns an empty bitmap.
   virtual const SkBitmap& DownloadedProfileImage() const = 0;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_H_