Move apps/shell to extensions/shell.

extensions/shell/browser/shell_app_window_controller.h

 // Copyright 2014 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_SHELL_BROWSER_SHELL_APP_WINDOW_CONTROLLER_H_
-#define APPS_SHELL_BROWSER_SHELL_APP_WINDOW_CONTROLLER_H_
+#ifndef EXTENSIONS_SHELL_BROWSER_SHELL_APP_WINDOW_CONTROLLER_H_
+#define EXTENSIONS_SHELL_BROWSER_SHELL_APP_WINDOW_CONTROLLER_H_
 
 namespace content {
 class BrowserContext;
 }
 
-namespace apps {
+namespace extensions {
 
 class ShellAppWindow;
 
 class ShellAppWindowController {
  public:
   virtual ~ShellAppWindowController() {}
 
   // Creates a new app window and adds it to the desktop. This class should
   // maintain the ownership of the window.
   virtual ShellAppWindow* CreateAppWindow(content::BrowserContext* context) = 0;
 
   // Closes and destroys the app windows.
   virtual void CloseAppWindows() = 0;
 };
 
-}  // namespace apps
+}  // namespace extensions
 
-#endif  // APPS_SHELL_BROWSER_SHELL_APP_WINDOW_CONTROLLER_H_
+#endif  // EXTENSIONS_SHELL_BROWSER_SHELL_APP_WINDOW_CONTROLLER_H_