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

chrome/browser/ui/toolbar/wrench_menu_model.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/ui/toolbar/wrench_menu_model.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "app/l10n_util.h"
@@ skipping 316 matching lines @@
 
 void WrenchMenuModel::TabSelectedAt(TabContentsWrapper* old_contents,
                                     TabContentsWrapper* new_contents,
                                     int index,
                                     bool user_gesture) {
   // The user has switched between tabs and the new tab may have a different
   // zoom setting.
   UpdateZoomControls();
 }
 
-void WrenchMenuModel::TabReplacedAt(TabContentsWrapper* old_contents,
+void WrenchMenuModel::TabReplacedAt(TabStripModel* tab_strip_model,
+                                    TabContentsWrapper* old_contents,
                                     TabContentsWrapper* new_contents,
                                     int index) {
   UpdateZoomControls();
 }
 
 void WrenchMenuModel::TabStripModelDeleted() {
   // During views shutdown, the tabstrip model/browser is deleted first, while
   // it is the opposite in gtk land.
   tabstrip_model_->RemoveObserver(this);
   tabstrip_model_ = NULL;
@@ skipping 157 matching lines @@
         &enable_increment, &enable_decrement);
   }
   zoom_label_ = l10n_util::GetStringFUTF16(
       IDS_ZOOM_PERCENT, base::IntToString16(zoom_percent));
 }
 
 string16 WrenchMenuModel::GetSyncMenuLabel() const {
   return sync_ui_util::GetSyncMenuLabel(
       browser_->profile()->GetOriginalProfile()->GetProfileSyncService());
 }