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

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

 // 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.
 
 #include "chrome/browser/views/frame/browser_view.h"
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 1468 matching lines @@
 
 void BrowserView::TabSelectedAt(TabContentsWrapper* old_contents,
                                 TabContentsWrapper* new_contents,
                                 int index,
                                 bool user_gesture) {
   DCHECK(old_contents != new_contents);
 
   ProcessTabSelected(new_contents, true);
 }
 
-void BrowserView::TabReplacedAt(TabContentsWrapper* old_contents,
+void BrowserView::TabReplacedAt(TabStripModel* tab_strip_model,
+                                TabContentsWrapper* old_contents,
                                 TabContentsWrapper* new_contents,
                                 int index) {
   if (index != browser_->tabstrip_model()->selected_index())
     return;
 
   // Swap the 'active' and 'preview' and delete what was the active.
   contents_->MakePreviewContentsActiveContents();
   TabContentsContainer* old_container = contents_container_;
   contents_container_ = preview_container_;
   old_container->ChangeTabContents(NULL);
@@ skipping 1073 matching lines @@
       UTF16ToWide(l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)));
 
   return view;
 }
 #endif
 
 // static
 FindBar* BrowserWindow::CreateFindBar(Browser* browser) {
   return browser::CreateFindBar(static_cast<BrowserView*>(browser->window()));
 }