Use username_hash instead of email

chrome/browser/chromeos/extensions/wallpaper_api.h

 // Copyright 2013 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_EXTENSIONS_WALLPAPER_API_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_API_H_
 
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/chromeos/extensions/wallpaper_function_base.h"
@@ skipping 33 matching lines @@
   // Layout of the downloaded wallpaper.
   ash::WallpaperLayout layout_;
 
   // True if need to generate thumbnail and pass to callback.
   bool generate_thumbnail_;
 
   // Unique file name of the custom wallpaper.
   std::string file_name_;
 
   // Email address of logged in user.
-  // TODO(bshe): User's email should not be used as part of wallpaper file path.
-  // http://crbug.com/287020
   std::string email_;
 
+  // Username hash of the logged in user.
+  std::string username_hash_;

[Nikita (slow), 2013/09/25 14:47:11]

nit: We try to migrate from email to user_id.
Please rename username > user_id (user_id_hash) in this CL.

I'll be removing UserManager API as well. When it was added we were not decided
on the exact name.

[bshe, 2013/09/26 16:49:57]

Done.

+
   // String representation of downloaded wallpaper.
   std::string image_data_;
 
   // Sequence token associated with wallpaper operations. Shared with
   // WallpaperManager.
   base::SequencedWorkerPool::SequenceToken sequence_token_;
 };
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_API_H_