Revert 150726 - Preload default wallpaper.

chrome/browser/chromeos/login/wallpaper_manager.h

Index: chrome/browser/chromeos/login/wallpaper_manager.h
===================================================================
--- chrome/browser/chromeos/login/wallpaper_manager.h	(revision 150736)
+++ chrome/browser/chromeos/login/wallpaper_manager.h	(working copy)
@@ -45,6 +45,9 @@
   // added after PowerManagerClient initialized.
   void AddObservers();
 
+  // Caches |email|'s wallpaper to memory if it is custom wallpaper.
+  void CacheIfCustomWallpaper(const std::string& email);
+
   // Loads wallpaper asynchronously if the current wallpaper is not the
   // wallpaper of logged in user.
   void EnsureLoggedInUserWallpaperLoaded();
@@ -131,21 +134,6 @@
   // at 0am if chromeos device is on.
   void BatchUpdateWallpaper();
 
-  // Cache all logged in users' wallpapers to memory at login screen. It should
-  // not compete with first wallpaper loading when boot up/initialize login
-  // WebUI page.
-  // There are two ways the first wallpaper might be loaded:
-  // 1. Loaded on boot. Login WebUI waits for it.
-  // 2. When flag --disable-boot-animation is passed. Login WebUI is loaded
-  // right away and in 500ms after. Wallpaper started to load.
-  // For case 2, should_cache_wallpaper_ is used to indicate if we need to
-  // cache wallpapers on wallpaper animation finished. The cache operation
-  // should be only executed once.
-  void CacheAllUsersWallpapers();
-
-  // Caches |email|'s wallpaper to memory.
-  void CacheUserWallpaper(const std::string& email);
-
   // Caches the decoded wallpaper to memory.
   void CacheWallpaper(const std::string& email, const UserImage& wallpaper);
 
@@ -212,8 +200,6 @@
   // The last selected user on user pod row.
   std::string last_selected_user_;
 
-  bool should_cache_wallpaper_;
-
   base::WeakPtrFactory<WallpaperManager> weak_factory_;
 
   content::NotificationRegistrar registrar_;