cros: Remove unused method

chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.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/ui/webui/chromeos/login/enrollment_screen_handler.h"
 
 #include <algorithm>
 
 #include "ash/common/system/chromeos/devicetype_utils.h"
 #include "base/bind.h"
@@ skipping 169 matching lines @@
 //      EnrollmentScreenActor implementation -----------------------------------
 
 void EnrollmentScreenHandler::SetParameters(
     Controller* controller,
     const policy::EnrollmentConfig& config) {
   CHECK(config.should_enroll());
   controller_ = controller;
   config_ = config;
 }
 
-void EnrollmentScreenHandler::PrepareToShow() {
-}
-
 void EnrollmentScreenHandler::Show() {
   if (!page_is_ready())
     show_on_init_ = true;
   else
     DoShow();
 }
 
 void EnrollmentScreenHandler::Hide() {
 }
 
@@ skipping 455 matching lines @@
 
   ShowScreenWithData(OobeScreen::SCREEN_OOBE_ENROLLMENT, &screen_data);
   if (first_show_) {
     first_show_ = false;
     UpdateStateInternal(NetworkError::ERROR_REASON_UPDATE, true);
   }
   histogram_helper_->OnScreenShow();
 }
 
 }  // namespace chromeos