Refactor kiosk app launch to be part of login screen UI flow.

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

Index: chrome/browser/ui/webui/chromeos/login/kiosk_app_menu_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/kiosk_app_menu_handler.cc b/chrome/browser/ui/webui/chromeos/login/kiosk_app_menu_handler.cc
index 7cfea29016ad3daa28eaea04f467d047bf7dea2e..bded6ac9f948e2d6939daf902f17549e46250ca4 100644
--- a/chrome/browser/ui/webui/chromeos/login/kiosk_app_menu_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/kiosk_app_menu_handler.cc
@@ -10,7 +10,6 @@
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_launch_error.h"
-#include "chrome/browser/chromeos/app_mode/kiosk_app_launcher.h"
 #include "chrome/browser/chromeos/login/existing_user_controller.h"
 #include "chrome/browser/policy/browser_policy_connector.h"
 #include "chromeos/chromeos_switches.h"
@@ -47,9 +46,6 @@ void KioskAppMenuHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback("kioskAppsLoaded",
       base::Bind(&KioskAppMenuHandler::HandleKioskAppsLoaded,
                  base::Unretained(this)));
-  web_ui()->RegisterMessageCallback("launchKioskApp",
-      base::Bind(&KioskAppMenuHandler::HandleLaunchKioskApps,
-                 base::Unretained(this)));
   web_ui()->RegisterMessageCallback("checkKioskAppLaunchError",
       base::Bind(&KioskAppMenuHandler::HandleCheckKioskAppLaunchError,
                  base::Unretained(this)));
@@ -111,19 +107,6 @@ void KioskAppMenuHandler::HandleKioskAppsLoaded(
       content::NotificationService::NoDetails());
 }
 
-void KioskAppMenuHandler::HandleLaunchKioskApps(const base::ListValue* args) {
-  std::string app_id;
-  CHECK(args->GetString(0, &app_id));
-
-  KioskAppManager::App app_data;
-  CHECK(KioskAppManager::Get()->GetApp(app_id, &app_data));
-
-  ExistingUserController::current_controller()->PrepareKioskAppLaunch();
-
-  // KioskAppLauncher deletes itself when done.
-  (new KioskAppLauncher(KioskAppManager::Get(), app_id))->Start();
-}
-
 void KioskAppMenuHandler::HandleCheckKioskAppLaunchError(
     const base::ListValue* args) {
   KioskAppLaunchError::Error error = KioskAppLaunchError::Get();