Remove task.h and finish base::Bind() migration.

chrome/browser/ui/gtk/tabs/tab_strip_gtk.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_GTK_TABS_TAB_STRIP_GTK_H_
 #define CHROME_BROWSER_UI_GTK_TABS_TAB_STRIP_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
-#include "base/task.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/gtk/tabs/tab_gtk.h"
 #include "chrome/browser/ui/gtk/tabstrip_origin_provider.h"
 #include "chrome/browser/ui/gtk/view_id_util.h"
 #include "chrome/browser/ui/tabs/hover_tab_selector.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/base/gtk/owned_widget_gtk.h"
 #include "ui/gfx/rect.h"
@@ skipping 467 matching lines @@
 
   // Helper for performing tab selection as a result of dragging over a tab.
   HoverTabSelector hover_tab_selector_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(TabStripGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_TABS_TAB_STRIP_GTK_H_