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

chrome/browser/ui/browser.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_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 688 matching lines @@
                             int index);
   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 TabMoved(TabContentsWrapper* contents,
                         int from_index,
                         int to_index);
-  virtual void TabReplacedAt(TabContentsWrapper* old_contents,
+  virtual void TabReplacedAt(TabStripModel* tab_strip_model,
+                             TabContentsWrapper* old_contents,
                              TabContentsWrapper* new_contents,
                              int index);
   virtual void TabPinnedStateChanged(TabContentsWrapper* contents, int index);
   virtual void TabStripEmpty();
 
   // Figure out if there are tabs that have beforeunload handlers.
   bool TabsNeedBeforeUnloadFired();
 
  private:
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, NoTabsInPopups);
@@ skipping 408 matching lines @@
   // and we install ourselves as an observer.
   TabRestoreService* tab_restore_service_;
 
   scoped_ptr<InstantController> instant_;
   scoped_ptr<InstantUnloadHandler> instant_unload_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_