Remove some linked_ptr from /content

content/browser/download/base_file.h

 // 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.
 
 #ifndef CONTENT_BROWSER_DOWNLOAD_BASE_FILE_H_
 #define CONTENT_BROWSER_DOWNLOAD_BASE_FILE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/memory/linked_ptr.h"
 #include "base/time/time.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/download_interrupt_reasons.h"
 #include "crypto/secure_hash.h"
 #include "net/base/net_errors.h"
 #include "net/log/net_log_with_source.h"
 #include "url/gurl.h"
 
 namespace content {
 
@@ skipping 194 matching lines @@
   bool detached_ = false;
 
   net::NetLogWithSource net_log_;
 
   DISALLOW_COPY_AND_ASSIGN(BaseFile);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_BASE_FILE_H_