Remove unused class ShellAppWindowController

athena/main/athena_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 ATHENA_MAIN_ATHENA_APP_WINDOW_CONTROLLER_H_
-#define ATHENA_MAIN_ATHENA_APP_WINDOW_CONTROLLER_H_
-
-#include "base/macros.h"
-#include "extensions/shell/browser/shell_app_window_controller.h"
-
-namespace athena {
-
-// The shell app window controller for athena. It embeds the web_contents of
-// an app window into an Athena activity.
-class AthenaAppWindowController : public extensions::ShellAppWindowController {
- public:
-  AthenaAppWindowController();
-  virtual ~AthenaAppWindowController();
-
-  // Overridden from extensions::ShellAppWindowController:
-  virtual extensions::ShellAppWindow* CreateAppWindow(
-      content::BrowserContext* context,
-      const extensions::Extension* extension) OVERRIDE;
-  virtual void CloseAppWindows() OVERRIDE;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(AthenaAppWindowController);
-};
-
-}  // namespace athena
-
-#endif  // ATHENA_MAIN_ATHENA_APP_WINDOW_CONTROLLER_H_