Revert of Remove WallpaperManager dependency on Cryptohome.

components/wallpaper/wallpaper_manager_base.h

 // Copyright 2014 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 COMPONENTS_WALLPAPER_WALLPAPER_MANAGER_BASE_H_
 #define COMPONENTS_WALLPAPER_WALLPAPER_MANAGER_BASE_H_
 
 #include <stddef.h>
 
 #include <deque>
@@ skipping 328 matching lines @@
   // |resized_directory| is the directory where resized versions are stored and
   // must be writable.
   virtual void SetCustomizedDefaultWallpaper(
       const GURL& wallpaper_url,
       const base::FilePath& downloaded_file,
       const base::FilePath& resized_directory);
 
   // Returns queue size.
   virtual size_t GetPendingListSizeForTesting() const = 0;
 
-  // Ruturns files identifier for the |account_id|.
-  virtual WallpaperFilesId GetFilesId(const AccountId& account_id) const = 0;
+  // Ruturns files identifier for the user.
+  virtual WallpaperFilesId GetFilesId(const user_manager::User& user) const = 0;
 
  protected:
   friend class TestApi;
   friend class WallpaperManagerBrowserTest;
   friend class WallpaperManagerBrowserTestDefaultWallpaper;
   friend class WallpaperManagerPolicyTest;
 
   // The |CustomWallpaperElement| contains |first| the path of the image which
   // is currently being loaded and or in progress of being loaded and |second|
   // the image itself.
@@ skipping 242 matching lines @@
 
   base::WeakPtrFactory<WallpaperManagerBase> weak_factory_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WallpaperManagerBase);
 };
 
 }  // namespace wallpaper
 
 #endif  // COMPONENTS_WALLPAPER_WALLPAPER_MANAGER_BASE_H_