Enable user change background image in settings page in Aura build.

chrome/browser/chromeos/login/user_manager.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/user_manager.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 821 matching lines @@
                           base::Bind(&UserManager::CheckOwnership,
                                      base::Unretained(this)));
 }
 
 void UserManager::SetInitialUserImage(const std::string& username) {
   // Choose a random default image.
   int image_id = base::RandInt(0, kDefaultImagesCount - 1);
   SaveUserDefaultImageIndex(username, image_id);
 }
 
+int UserManager::GetUserWallpaper(const std::string& username) {
+  User* user = const_cast<User*>(FindUser(username));
+  if (user) {
+    return user->wallpaper_index();
+  }
+  return User::kDefaultWallpaperIndex;
+}
+
+void UserManager::SetUserWallpaper(const std::string& username,
+                                   int wallpaper_index) {
+  User* user = const_cast<User*>(FindUser(username));
+  if (user) {
+    user->SetWallpaper(wallpaper_index);
+  }
+}
+
 void UserManager::SetUserImage(const std::string& username,
                                int image_index,
                                const SkBitmap& image) {
   User* user = const_cast<User*>(FindUser(username));
   // User may have been removed by now.
   if (user) {
     // For existing users, a valid image index should have been set upon loading
     // them from Local State.
     DCHECK(user->image_index() != User::kInvalidImageIndex ||
            current_user_is_new_);
@@ skipping 215 matching lines @@
 
 User* UserManager::CreateUser(const std::string& email) const {
   User* user = new User(email, email == kGuestUser);
   user->set_oauth_token_status(LoadUserOAuthStatus(email));
   // Used to determine whether user's display name is unique.
   ++display_name_count_[user->GetDisplayName()];
   return user;
 }
 
 }  // namespace chromeos