Multi-tab: Adding new Notification when tab selection changes.

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

 // Copyright (c) 2011 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/views/frame/browser_view.h"
 
 #if defined(TOOLKIT_USES_GTK)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 1394 matching lines @@
   // Some reports seem to show that the focus manager and/or focused view can
   // be garbage at that point, it is not clear why.
   if (!contents->tab_contents()->is_being_destroyed())
     contents->view()->StoreFocus();
 }
 
 void BrowserView::ActiveTabChanged(TabContentsWrapper* old_contents,
                                    TabContentsWrapper* new_contents,
                                    int index,
                                    bool user_gesture) {
-  if (old_contents == new_contents)
-    return;
-
   ProcessTabSelected(new_contents, true);
 }
 
 void BrowserView::TabReplacedAt(TabStripModel* tab_strip_model,
                                 TabContentsWrapper* old_contents,
                                 TabContentsWrapper* new_contents,
                                 int index) {
   if (index != browser_->tabstrip_model()->active_index())
     return;
 
@@ skipping 1176 matching lines @@
   view->GetWindow()->non_client_view()->SetAccessibleName(
       l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
   return view;
 }
 #endif
 
 // static
 FindBar* BrowserWindow::CreateFindBar(Browser* browser) {
   return browser::CreateFindBar(static_cast<BrowserView*>(browser->window()));
 }