Move Extension into extensions namespace

chrome/browser/ui/gtk/extensions/shell_window_gtk.h

 // Copyright (c) 2012 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 CHROME_BROWSER_UI_GTK_EXTENSIONS_SHELL_WINDOW_GTK_H_
 #define CHROME_BROWSER_UI_GTK_EXTENSIONS_SHELL_WINDOW_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
 #include "chrome/browser/ui/extensions/shell_window.h"
 #include "chrome/browser/ui/gtk/extensions/extension_view_gtk.h"
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/base/x/active_window_watcher_x_observer.h"
 #include "ui/gfx/rect.h"
 
 class Profile;
 
+namespace extensions {
+class Extension;
+}
+
 class ShellWindowGtk : public ShellWindow,
                        public ExtensionViewGtk::Container,
                        public ui::ActiveWindowWatcherXObserver {
  public:
   ShellWindowGtk(Profile* profile,
-                 const Extension* extension,
+                 const extensions::Extension* extension,
                  const GURL& url);
 
   // BaseWindow implementation.
   virtual bool IsActive() const OVERRIDE;
   virtual bool IsMaximized() const OVERRIDE;
   virtual bool IsMinimized() const OVERRIDE;
   virtual bool IsFullscreen() const OVERRIDE;
   virtual gfx::Rect GetRestoredBounds() const OVERRIDE;
   virtual gfx::Rect GetBounds() const OVERRIDE;
   virtual void Show() OVERRIDE;
@@ skipping 33 matching lines @@
   // The position and size of the current window.
   gfx::Rect bounds_;
 
   // The position and size of the non-maximized, non-fullscreen window.
   gfx::Rect restored_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_EXTENSIONS_SHELL_WINDOW_GTK_H_