cros: Remove unused method

chrome/browser/ui/webui/chromeos/login/app_launch_splash_screen_handler.cc

 // Copyright 2013 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/app_launch_splash_screen_handler.h"
 
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/login/screens/network_error.h"
 #include "chrome/browser/ui/webui/chromeos/login/oobe_screen.h"
 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
@@ skipping 92 matching lines @@
   AddCallback("configureNetwork",
               &AppLaunchSplashScreenHandler::HandleConfigureNetwork);
   AddCallback("cancelAppLaunch",
               &AppLaunchSplashScreenHandler::HandleCancelAppLaunch);
   AddCallback("continueAppLaunch",
               &AppLaunchSplashScreenHandler::HandleContinueAppLaunch);
   AddCallback("networkConfigRequest",
               &AppLaunchSplashScreenHandler::HandleNetworkConfigRequested);
 }
 
-void AppLaunchSplashScreenHandler::PrepareToShow() {
-}
-
 void AppLaunchSplashScreenHandler::Hide() {
 }
 
 void AppLaunchSplashScreenHandler::ToggleNetworkConfig(bool visible) {
   CallJS("toggleNetworkConfig", visible);
 }
 
 void AppLaunchSplashScreenHandler::UpdateAppLaunchState(AppLaunchState state) {
   if (state == state_)
     return;
@@ skipping 155 matching lines @@
   DCHECK(online_state_);
   if (delegate_ && online_state_) {
     network_config_requested_ = false;
     network_config_done_ = true;
     delegate_->OnNetworkConfigRequested(false);
     Show(app_id_);
   }
 }
 
 }  // namespace chromeos