cros: Remove unused method

chrome/browser/chromeos/login/screens/host_pairing_screen.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_HOST_PAIRING_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_HOST_PAIRING_SCREEN_H_
 
 #include "base/macros.h"
 #include "chrome/browser/chromeos/login/enrollment/enterprise_enrollment_helper.h"
 #include "chrome/browser/chromeos/login/screens/base_screen.h"
@@ skipping 31 matching lines @@
                     HostPairingScreenActor* actor,
                     pairing_chromeos::HostPairingController* remora_controller);
   ~HostPairingScreen() override;
 
  private:
   typedef pairing_chromeos::HostPairingController::Stage Stage;
 
   void CommitContextChanges();
 
   // Overridden from BaseScreen:
-  void PrepareToShow() override;
   void Show() override;
   void Hide() override;
   std::string GetName() const override;
 
   // pairing_chromeos::HostPairingController::Observer:
   void PairingStageChanged(Stage new_stage) override;
   void ConfigureHostRequested(bool accepted_eula,
                               const std::string& lang,
                               const std::string& timezone,
                               bool send_reports,
@@ skipping 29 matching lines @@
   Stage current_stage_;
 
   base::WeakPtrFactory<HostPairingScreen> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HostPairingScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_HOST_PAIRING_SCREEN_H_