Changes instant so that the newly created tab has a new id. Doing

chrome/browser/ui/views/frame/browser_view.h

 // Copyright (c) 2010 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_VIEWS_FRAME_BROWSER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 333 matching lines @@
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   // Overridden from TabStripModelObserver:
   virtual void TabDetachedAt(TabContentsWrapper* contents, int index);
   virtual void TabDeselectedAt(TabContentsWrapper* contents, int index);
   virtual void TabSelectedAt(TabContentsWrapper* old_contents,
                              TabContentsWrapper* new_contents,
                              int index,
                              bool user_gesture);
-  virtual void TabReplacedAt(TabContentsWrapper* old_contents,
+  virtual void TabReplacedAt(TabStripModel* tab_strip_model,
+                             TabContentsWrapper* old_contents,
                              TabContentsWrapper* new_contents,
                              int index);
   virtual void TabStripEmpty();
 
   // Overridden from menus::SimpleMenuModel::Delegate:
   virtual bool IsCommandIdChecked(int command_id) const;
   virtual bool IsCommandIdEnabled(int command_id) const;
   virtual bool GetAcceleratorForCommandId(int command_id,
                                           menus::Accelerator* accelerator);
   virtual bool IsItemForCommandIdDynamic(int command_id) const;
@@ skipping 299 matching lines @@
   UnhandledKeyboardEventHandler unhandled_keyboard_event_handler_;
 
   scoped_ptr<AccessibleViewHelper> accessible_view_helper_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_