Move Extension into extensions namespace

chrome/browser/ui/gtk/gtk_theme_service.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_GTK_THEME_SERVICE_H_
 #define CHROME_BROWSER_UI_GTK_GTK_THEME_SERVICE_H_
 #pragma once
 
 #include <map>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/prefs/pref_change_registrar.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "ui/base/glib/glib_integers.h"
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/base/gtk/owned_widget_gtk.h"
 #include "ui/gfx/color_utils.h"
 
 class Profile;
 
+namespace extensions {
+class Extension;
+}
+
 namespace gfx {
 class CairoCachedSurface;
 }
 
 namespace ui {
 class GtkSignalRegistrar;
 }
 
 typedef struct _GdkDisplay GdkDisplay;
 typedef struct _GdkEventExpose GdkEventExpose;
@@ skipping 27 matching lines @@
   // Overridden from ThemeService:
   //
   // Sets that we aren't using the system theme, then calls
   // ThemeService's implementation.
   virtual void Init(Profile* profile) OVERRIDE;
   virtual SkBitmap* GetBitmapNamed(int id) const OVERRIDE;
   virtual gfx::ImageSkia* GetImageSkiaNamed(int id) const OVERRIDE;
   virtual const gfx::Image* GetImageNamed(int id) const OVERRIDE;
   virtual SkColor GetColor(int id) const OVERRIDE;
   virtual bool HasCustomImage(int id) const OVERRIDE;
-  virtual void SetTheme(const Extension* extension) OVERRIDE;
+  virtual void SetTheme(const extensions::Extension* extension) OVERRIDE;
   virtual void UseDefaultTheme() OVERRIDE;
   virtual void SetNativeTheme() OVERRIDE;
   virtual bool UsingDefaultTheme() const OVERRIDE;
   virtual bool UsingNativeTheme() const OVERRIDE;
 
   // Overridden from ThemeService, content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
@@ skipping 212 matching lines @@
 
   // The default folder icon and default bookmark icon for the GTK theme.
   // These are static because the system can only have one theme at a time.
   // They are cached when they are requested the first time, and cleared when
   // the system theme changes.
   static gfx::Image* default_folder_icon_;
   static gfx::Image* default_bookmark_icon_;
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_GTK_THEME_SERVICE_H_