Change URLRequest to use a ref-counted buffer for actual IO....

net/http/http_network_transaction.h

 // Copyright (c) 2006-2008 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_HTTP_HTTP_NETWORK_TRANSACTION_H_
 #define NET_HTTP_HTTP_NETWORK_TRANSACTION_H_
 
 #include <string>
 
 #include "base/ref_counted.h"
@@ skipping 21 matching lines @@
 
   virtual ~HttpNetworkTransaction();
 
   // HttpTransaction methods:
   virtual int Start(const HttpRequestInfo* request_info,
                     CompletionCallback* callback);
   virtual int RestartIgnoringLastError(CompletionCallback* callback);
   virtual int RestartWithAuth(const std::wstring& username,
                               const std::wstring& password,
                               CompletionCallback* callback);
-  virtual int Read(char* buf, int buf_len, CompletionCallback* callback);
+  virtual int Read(IOBuffer* buf, int buf_len, CompletionCallback* callback);
   virtual const HttpResponseInfo* GetResponseInfo() const;
   virtual LoadState GetLoadState() const;
   virtual uint64 GetUploadProgress() const;
 
  private:
   void BuildRequestHeaders();
   void BuildTunnelRequest();
   void DoCallback(int result);
   void OnIOComplete(int result);
 
@@ skipping 199 matching lines @@
   // than zero (and chunked_decoder_ is null), then we read until the server
   // closes the connection.
   int64 content_length_;
 
   // Keeps track of the number of response body bytes read so far.
   int64 content_read_;
 
   scoped_ptr<HttpChunkedDecoder> chunked_decoder_;
 
   // User buffer and length passed to the Read method.
-  char* read_buf_;
+  scoped_refptr<IOBuffer> read_buf_;
   int read_buf_len_;
 
   enum State {
     STATE_RESOLVE_PROXY,
     STATE_RESOLVE_PROXY_COMPLETE,
     STATE_INIT_CONNECTION,
     STATE_INIT_CONNECTION_COMPLETE,
     STATE_RESOLVE_HOST,
     STATE_RESOLVE_HOST_COMPLETE,
     STATE_CONNECT,
@@ skipping 10 matching lines @@
     STATE_READ_BODY_COMPLETE,
     STATE_NONE
   };
   State next_state_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_TRANSACTION_H_