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

chrome/browser/printing/print_job_worker.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_PRINTING_PRINT_JOB_WORKER_H__
 #define CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_H__
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
-#include "base/task.h"
 #include "base/threading/thread.h"
 #include "printing/page_number.h"
 #include "printing/printing_context.h"
 #include "printing/print_job_constants.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace base {
 class DictionaryValue;
 }
 
@@ skipping 105 matching lines @@
 
   // Used to generate a WeakPtr for callbacks.
   base::WeakPtrFactory<PrintJobWorker> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintJobWorker);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_H__