Save user selected wallpaper information to local state.

chrome/browser/chromeos/extensions/wallpaper_private_api.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/extensions/wallpaper_private_api.h"
 
-#include "ash/desktop_background/desktop_background_controller.h"
-#include "ash/shell.h"
 #include "base/file_util.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/synchronization/cancellation_flag.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/login/wallpaper_manager.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/image_decoder.h"
@@ skipping 143 matching lines @@
                    this));
   } else {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         base::Bind(&WallpaperSetWallpaperFunction::OnFail,
                    this));
   }
 }
 
 void WallpaperSetWallpaperFunction::SetDecodedWallpaper() {
-  ash::Shell::GetInstance()->desktop_background_controller()->
-      SetCustomWallpaper(wallpaper_, layout_);
+  chromeos::WallpaperManager::Get()->SetWallpaperFromImageSkia(layout_,

[Nikita (slow), 2012/07/23 22:06:47]

nit: Save WallpaperManager instance to local variable. Would improve readability
a bit.

[bshe, 2012/07/24 16:21:10]

Done.

+                                                               wallpaper_);
+  chromeos::WallpaperManager::Get()->SaveUserWallpaperInfos(
+      email_, file_name_, layout_, chromeos::User::DEFAULT);
   wallpaper_decoder_ = NULL;
   SendResponse(true);
 }