Moves Shell::CreateShelf() to WmShell

chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_browsertest.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h"
 
 #include <stddef.h>
 
 #include "ash/common/wallpaper/wallpaper_controller.h"
 #include "ash/common/wm_shell.h"
@@ skipping 100 matching lines @@
 
     return wallpaper_path;
   }
 
   // Logs in |account_id|.
   void LogIn(const AccountId& account_id, const std::string& user_id_hash) {
     user_manager::UserManager::Get()->UserLoggedIn(account_id, user_id_hash,
                                                    false);
     // Adding a secondary display creates a shelf on that display, which
     // assumes a shelf on the primary display if the user was logged in.
-    ash::Shell::GetInstance()->CreateShelf();
+    ash::WmShell::Get()->CreateShelf();
     WaitAsyncWallpaperLoadStarted();
   }
 
   // Logs in |account_id| and sets it as child account.
   void LogInAsChild(const AccountId& account_id,
                     const std::string& user_id_hash) {
     user_manager::UserManager::Get()->UserLoggedIn(account_id, user_id_hash,
                                                    false);
     user_manager::User* user =
         user_manager::UserManager::Get()->FindUserAndModify(account_id);
@@ skipping 713 matching lines @@
 
   WallpaperManager::Get()->SetDefaultWallpaperNow(EmptyAccountId());
   wallpaper_manager_test_utils::WaitAsyncWallpaperLoadFinished();
 
   EXPECT_TRUE(wallpaper_manager_test_utils::ImageIsNearColor(
       controller_->GetWallpaper(),
       wallpaper_manager_test_utils::kSmallDefaultWallpaperColor));
 }
 
 }  // namespace chromeos