Cleanup: Remove forward declarations in various chrome/browser directories.

chrome/browser/printing/print_job.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_H_
 #define CHROME_BROWSER_PRINTING_PRINT_JOB_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "chrome/browser/printing/print_job_worker_owner.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
-class GURL;
 class Thread;
 
 namespace printing {
 
 // See definition below.
 class JobEventDetails;
 
 class PrintedDocument;
 class PrintedPage;
 class PrintedPagesSource;
@@ skipping 168 matching lines @@
   scoped_refptr<PrintedDocument> document_;
   scoped_refptr<PrintedPage> page_;
   const Type type_;
 
   DISALLOW_COPY_AND_ASSIGN(JobEventDetails);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_JOB_H_