cros: Remove unused method

chrome/browser/chromeos/login/screens/network_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/network_screen.h"
 
 #include <utility>
 
 #include "base/location.h"
 #include "base/logging.h"
@@ skipping 61 matching lines @@
     view_->Unbind();
   connection_timer_.Stop();
   UnsubscribeNetworkNotification();
 
   input_method::InputMethodManager::Get()->RemoveObserver(this);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NetworkScreen, NetworkModel implementation:
 
-void NetworkScreen::PrepareToShow() {
-  if (view_)
-    view_->PrepareToShow();
-}
-
 void NetworkScreen::Show() {
   Refresh();
 
   // Here we should handle default locales, for which we do not have UI
   // resources. This would load fallback, but properly show "selected" locale
   // in the UI.
   if (selected_language_code_.empty()) {
     const StartupCustomizationDocument* startup_manifest =
         StartupCustomizationDocument::GetInstance();
     SetApplicationLocale(startup_manifest->initial_locale_default());
@@ skipping 352 matching lines @@
     observer.OnLanguageListReloaded();
 }
 
 void NetworkScreen::OnSystemTimezoneChanged() {
   std::string current_timezone_id;
   CrosSettings::Get()->GetString(kSystemTimezone, &current_timezone_id);
   GetContextEditor().SetString(kContextKeyTimezone, current_timezone_id);
 }
 
 }  // namespace chromeos