Moved apps metro code from apps to chrome/browser/apps.

chrome/browser/apps/app_launch_for_metro_restart_win.h

 // 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.
 
-#ifndef APPS_APP_LAUNCH_FOR_METRO_RESTART_WIN_H
-#define APPS_APP_LAUNCH_FOR_METRO_RESTART_WIN_H
+#ifndef CHROME_BROWSER_APPS_APP_LAUNCH_FOR_METRO_RESTART_WIN_H_
+#define CHROME_BROWSER_APPS_APP_LAUNCH_FOR_METRO_RESTART_WIN_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 
+class PrefRegistrySimple;
 class Profile;
 
-namespace apps {
+namespace app_metro_launch {
 
 // Handles launching apps on browser startup due to an attempt to launch an app
 // in Windows 8 Metro mode.
 void HandleAppLaunchForMetroRestart(Profile* profile);
 
 // Set a local pref to launch an app before relaunching chrome in desktop mode.
 void SetAppLaunchForMetroRestart(Profile* profile,
                                  const std::string& extension_id);
 
-}  // namespace apps
+// Register preferences to do with launching apps in Metro.
+void RegisterPrefs(PrefRegistrySimple* registry);
 
-#endif  // APPS_APP_LAUNCH_FOR_METRO_RESTART_WIN_H
+}  // namespace app_metro_launch
+
+#endif  // CHROME_BROWSER_APPS_APP_LAUNCH_FOR_METRO_RESTART_WIN_H_