Remove obviously unneeded forward declarations from headers under src/{app,base,net}.

net/url_request/url_request_ftp_job.h

 // Copyright (c) 2010 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 NET_URL_REQUEST_URL_REQUEST_FTP_JOB_H_
 #define NET_URL_REQUEST_URL_REQUEST_FTP_JOB_H_
 #pragma once
 
 #include <string>
 
 #include "base/string16.h"
 #include "net/base/auth.h"
 #include "net/base/completion_callback.h"
 #include "net/ftp/ftp_request_info.h"
 #include "net/ftp/ftp_transaction.h"
 #include "net/url_request/url_request_job.h"
 
 class URLRequestContext;
 
-namespace net {
-struct list_state;
-}
-
 // A URLRequestJob subclass that is built on top of FtpTransaction. It
 // provides an implementation for FTP.
 class URLRequestFtpJob : public URLRequestJob {
  public:
 
   explicit URLRequestFtpJob(URLRequest* request);
 
   static URLRequestJob* Factory(URLRequest* request, const std::string& scheme);
 
   // URLRequestJob methods:
@@ skipping 38 matching lines @@
   scoped_refptr<net::AuthData> server_auth_;
 
   // Keep a reference to the url request context to be sure it's not deleted
   // before us.
   scoped_refptr<URLRequestContext> context_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestFtpJob);
 };
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_FTP_JOB_H_