Cleanup legacy flags and switches

chrome/browser/chromeos/system/ash_system_tray_delegate.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/system/ash_system_tray_delegate.h"
 
 #include <algorithm>
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 583 matching lines @@
           !user->is_logged_in()) {
         has_regular_not_logged_in_users = true;
         break;
       }
     }
 
     // Launch sign in screen to add another user to current session.
     if (has_regular_not_logged_in_users) {
       ash::Shell::GetInstance()->
           desktop_background_controller()->MoveDesktopToLockedContainer();
-      ShowLoginWizard(std::string(), gfx::Size());
+      ShowLoginWizard(std::string());
     }
   }
 
   virtual void ShutDown() OVERRIDE {
     ash::Shell::GetInstance()->session_state_controller()->RequestShutdown();
   }
 
   virtual void SignOut() OVERRIDE {
     chrome::AttemptUserExit();
   }
@@ skipping 722 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(SystemTrayDelegate);
 };
 
 }  // namespace
 
 ash::SystemTrayDelegate* CreateSystemTrayDelegate() {
   return new chromeos::SystemTrayDelegate();
 }
 
 }  // namespace chromeos