Move Extension into extensions namespace

chrome/browser/tab_contents/render_view_context_menu.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_TAB_CONTENTS_RENDER_VIEW_CONTEXT_MENU_H_
 #define CHROME_BROWSER_TAB_CONTENTS_RENDER_VIEW_CONTEXT_MENU_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 15 matching lines @@
 class PrintPreviewContextMenuObserver;
 class Profile;
 class SpellingMenuObserver;
 class SpellCheckerSubMenuObserver;
 
 namespace content {
 class RenderViewHost;
 class WebContents;
 }
 
+namespace extensions {
+class Extension;
+}
+
 namespace gfx {
 class Point;
 }
 
 namespace WebKit {
 struct WebMediaPlayerAction;
 struct WebPluginAction;
 }
 
 // An interface that controls a RenderViewContextMenu instance from observers.
@@ skipping 151 matching lines @@
       const content::ContextMenuParams& params,
       ExtensionMenuItem::ContextList contexts,
       const URLPatternSet& target_url_patterns);
   static ExtensionMenuItem::List GetRelevantExtensionItems(
       const ExtensionMenuItem::List& items,
       const content::ContextMenuParams& params,
       Profile* profile,
       bool can_cross_incognito);
 
   // Gets the extension (if any) associated with the WebContents that we're in.
-  const Extension* GetExtension() const;
+  const extensions::Extension* GetExtension() const;
   void AppendPlatformAppItems();
   void AppendPopupExtensionItems();
   bool AppendCustomItems();
   void AppendDeveloperItems();
   void AppendLinkItems();
   void AppendImageItems();
   void AppendAudioItems();
   void AppendVideoItems();
   void AppendMediaItems();
   void AppendPluginItems();
@@ skipping 74 matching lines @@
   // An observer that disables menu items when print preview is active.
   scoped_ptr<PrintPreviewContextMenuObserver> print_preview_menu_observer_;
 
   // Our observers.
   mutable ObserverList<RenderViewContextMenuObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewContextMenu);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_RENDER_VIEW_CONTEXT_MENU_H_