Ensure public account policy wallpaper is stored in correct place.

chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h

Index: chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h
diff --git a/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h b/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h
index cc764455fa3490df092aae233875a95c2a6f5089..86958bc50d60b326c3b13089b5f35d7b67975042 100644
--- a/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h
+++ b/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h
@@ -262,6 +262,13 @@ class WallpaperManager: public content::NotificationObserver {
   // Removes all |user_id| related wallpaper info and saved wallpapers.
   void RemoveUserWallpaperInfo(const std::string& user_id);
 
+  // Calls SetCustomWallpaper() with |user_id_hash| received from cryptohome.
+  void SetCustomWallpaperOnSanitizedUsername(const std::string& user_id,
+                                             const gfx::ImageSkia& image,
+                                             bool update_wallpaper,
+                                             bool cryptohome_success,
+                                             const std::string& user_id_hash);
+
   // Saves custom wallpaper to file, post task to generate thumbnail and updates
   // local state preferences. If |update_wallpaper| is false, don't change
   // wallpaper but only update cache.