cros: Remove unused method

chrome/browser/ui/webui/chromeos/login/network_screen_handler.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_NETWORK_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_NETWORK_SCREEN_HANDLER_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 12 matching lines @@
 
 // WebUI implementation of NetworkScreenActor. It is used to interact with
 // the welcome screen (part of the page) of the OOBE.
 class NetworkScreenHandler : public NetworkView, public BaseScreenHandler {
  public:
   explicit NetworkScreenHandler(CoreOobeActor* core_oobe_actor);
   ~NetworkScreenHandler() override;
 
  private:
   // NetworkView implementation:
-  void PrepareToShow() override;
   void Show() override;
   void Hide() override;
   void Bind(NetworkModel& model) override;
   void Unbind() override;
   void ShowError(const base::string16& message) override;
   void ClearErrors() override;
   void StopDemoModeDetection() override;
   void ShowConnectingStatus(bool connecting,
                             const base::string16& network_id) override;
   void ReloadLocalizedContent() override;
@@ skipping 16 matching lines @@
 
   // Position of the network control.
   gfx::Point network_control_pos_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_NETWORK_SCREEN_HANDLER_H_