Move apps/shell to extensions/shell.

apps/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_
-
-namespace content {
-class BrowserContext;
-}
-
-namespace apps {
-
-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
-
-#endif  // APPS_SHELL_BROWSER_SHELL_APP_WINDOW_CONTROLLER_H_