base::Bind: Remove callback_old.h.

chrome/browser/tab_contents/thumbnail_generator.h

Index: chrome/browser/tab_contents/thumbnail_generator.h
diff --git a/chrome/browser/tab_contents/thumbnail_generator.h b/chrome/browser/tab_contents/thumbnail_generator.h
index c805a9b0b3247f17f1fe714227b2d149d76f0240..7440b29f20bf03ba9167cb7faa087198ff8edcc3 100644
--- a/chrome/browser/tab_contents/thumbnail_generator.h
+++ b/chrome/browser/tab_contents/thumbnail_generator.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
@@ -11,7 +11,6 @@
 #include <vector>
 
 #include "base/basictypes.h"
-#include "base/callback_old.h"
 #include "base/memory/linked_ptr.h"
 #include "base/timer.h"
 #include "content/browser/renderer_host/backing_store.h"