cros: Remove BaseScreen::Initialize method.

chrome/browser/chromeos/login/screens/update_screen.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/login/screens/update_screen.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
@@ skipping 323 matching lines @@
   if (view_)
     view_->Show();
 }
 
 void UpdateScreen::Hide() {
   if (view_)
     view_->Hide();
   is_shown_ = false;
 }
 
-void UpdateScreen::Initialize(::login::ScreenContext* context) {
-  UpdateModel::Initialize(context);
-}
-
 void UpdateScreen::OnViewDestroyed(UpdateView* view) {
   if (view_ == view)
     view_ = nullptr;
 }
 
 void UpdateScreen::OnUserAction(const std::string& action_id) {
 #if !defined(OFFICIAL_BUILD)
   if (action_id == kUserActionCancelUpdateShortcut)
     CancelUpdate();
   else
@@ skipping 237 matching lines @@
 }
 
 void UpdateScreen::OnConnectRequested() {
   if (state_ == STATE_ERROR) {
     LOG(WARNING) << "Hiding error message since AP was reselected";
     StartUpdateCheck();
   }
 }
 
 }  // namespace chromeos