Clean up ResourceHandler API.

content/browser/download/download_resource_handler.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_DOWNLOAD_RESOURCE_HANDLER_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 49 matching lines @@
                                  bool* defer) OVERRIDE;
 
   // Pass-through implementation.
   virtual bool OnWillStart(int request_id,
                            const GURL& url,
                            bool* defer) OVERRIDE;
 
   // Create a new buffer, which will be handed to the download thread for file
   // writing and deletion.
   virtual bool OnWillRead(int request_id,
-                          net::IOBuffer** buf,
+                          scoped_refptr<net::IOBuffer>* buf,
                           int* buf_size,
                           int min_size) OVERRIDE;
 
   virtual bool OnReadCompleted(int request_id, int bytes_read,
                                bool* defer) OVERRIDE;
 
   virtual bool OnResponseCompleted(int request_id,
                                    const net::URLRequestStatus& status,
                                    const std::string& security_info) OVERRIDE;
 
@@ skipping 17 matching lines @@
   // If the content-length header is not present (or contains something other
   // than numbers), the incoming content_length is -1 (unknown size).
   // Set the content length to 0 to indicate unknown size to DownloadManager.
   void SetContentLength(const int64& content_length);
 
   void SetContentDisposition(const std::string& content_disposition);
 
   uint32 download_id_;
   std::string content_disposition_;
   int64 content_length_;
-  net::URLRequest* request_;
   // This is read only on the IO thread, but may only
   // be called on the UI thread.
   DownloadUrlParameters::OnStartedCallback started_cb_;
   scoped_ptr<DownloadSaveInfo> save_info_;
 
   // Data flow
   scoped_refptr<net::IOBuffer> read_buffer_;       // From URLRequest.
   scoped_ptr<ByteStreamWriter> stream_writer_; // To rest of system.
 
   // The following are used to collect stats.
@@ skipping 14 matching lines @@
 
   static const int kReadBufSize = 32768;  // bytes
   static const int kThrottleTimeMs = 200;  // milliseconds
 
   DISALLOW_COPY_AND_ASSIGN(DownloadResourceHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_