Move apps/shell to extensions/shell.

extensions/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_
+#ifndef EXTENSIONS_SHELL_BROWSER_DEFAULT_SHELL_BROWSER_MAIN_DELEGATE_H_
+#define EXTENSIONS_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"
+#include "extensions/shell/browser/shell_browser_main_delegate.h"
 
-namespace apps {
+namespace extensions {
 
 // 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
+}  // namespace extensions
 
 #endif  // DEFAULT_SHELL_BROWSER_MAIN_DELEGATE_H_