Tabs Extension: Implementation of tabs.duplicate api.

chrome/browser/ui/browser.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_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 754 matching lines @@
   // Construct a TabContents for a given URL, profile and transition type. If
   // instance is not null, its process will be used to render the tab.
   virtual TabContents* CreateTabContentsForURL(
       const GURL& url,
       const content::Referrer& referrer,
       Profile* profile,
       content::PageTransition transition,
       bool defer_load,
       content::SiteInstance* instance) const OVERRIDE;
   virtual bool CanDuplicateContentsAt(int index) OVERRIDE;
-  virtual void DuplicateContentsAt(int index) OVERRIDE;
+  virtual TabContents* DuplicateContentsAt(int index) OVERRIDE;
   virtual void CloseFrameAfterDragSession() OVERRIDE;
   virtual void CreateHistoricalTab(TabContents* contents) OVERRIDE;
   virtual bool RunUnloadListenerBeforeClosing(TabContents* contents) OVERRIDE;
   virtual bool CanCloseContents(std::vector<int>* indices) OVERRIDE;
   virtual bool CanBookmarkAllTabs() const OVERRIDE;
   virtual void BookmarkAllTabs() OVERRIDE;
   virtual bool CanCloseTab() const OVERRIDE;
   virtual bool CanRestoreTab() OVERRIDE;
   virtual void RestoreTab() OVERRIDE;
   virtual bool LargeIconsPermitted() const OVERRIDE;
@@ skipping 675 matching lines @@
   bool window_has_shown_;
 
   // Currently open color chooser. Non-NULL after OpenColorChooser is called and
   // before DidEndColorChooser is called.
   scoped_ptr<content::ColorChooser> color_chooser_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_