Cleanup: Remove unneeded chrome/common/pref_names.h includes.

chrome/browser/ui/webui/chromeos/login/kiosk_autolaunch_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/kiosk_autolaunch_screen_handler.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/common/chrome_switches.h"
-#include "chrome/common/pref_names.h"
 #include "chrome/grit/generated_resources.h"
 #include "chromeos/chromeos_switches.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/session_manager_client.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "ui/base/webui/web_ui_util.h"
 
 namespace {
 
@@ skipping 127 matching lines @@
 void KioskAutolaunchScreenHandler::OnKioskAppsSettingsChanged() {
   UpdateKioskApp();
 }
 
 void KioskAutolaunchScreenHandler::OnKioskAppDataChanged(
     const std::string& app_id) {
   UpdateKioskApp();
 }
 
 }  // namespace chromeos