Move apps/shell to extensions/shell.

apps/shell/browser/default_shell_browser_main_delegate.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_DEFAULT_SHELL_BROWSER_MAIN_DELEGATE_H_
-#define APPS_SHELL_BROWSER_DEFAULT_SHELL_BROWSER_MAIN_DELEGATE_H_
-
-#include "apps/shell/browser/shell_browser_main_delegate.h"
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-
-namespace apps {
-
-// A ShellBrowserMainDelegate that starts an application specified
-// by the "--app" command line. This is used only in the browser process.
-class DefaultShellBrowserMainDelegate : public ShellBrowserMainDelegate {
- public:
-  DefaultShellBrowserMainDelegate();
-  virtual ~DefaultShellBrowserMainDelegate();
-
-  // ShellBrowserMainDelegate:
-  virtual void Start(content::BrowserContext* context) OVERRIDE;
-  virtual void Shutdown() OVERRIDE;
-  virtual ShellDesktopController* CreateDesktopController() OVERRIDE;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(DefaultShellBrowserMainDelegate);
-};
-
-}  // namespace apps
-
-#endif  // DEFAULT_SHELL_BROWSER_MAIN_DELEGATE_H_