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

chrome/browser/automation/url_request_slow_download_job.cc

 // 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.
 
 #include "chrome/browser/automation/url_request_slow_download_job.h"
 
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "googleurl/src/gurl.h"
 #include "net/url_request/url_request.h"
@@ skipping 54 matching lines @@
     should_send_second_chunk_(false) {
 }
 
 void URLRequestSlowDownloadJob::StartAsync() {
   if (LowerCaseEqualsASCII(kFinishDownloadUrl, request_->url().spec().c_str()))
     URLRequestSlowDownloadJob::FinishPendingRequests();
 
   NotifyHeadersComplete();
 }
 
-bool URLRequestSlowDownloadJob::ReadRawData(char* buf, int buf_size,
+bool URLRequestSlowDownloadJob::ReadRawData(net::IOBuffer* buf, int buf_size,
                                             int *bytes_read) {
   if (LowerCaseEqualsASCII(kFinishDownloadUrl,
                            request_->url().spec().c_str())) {
     *bytes_read = 0;
     return true;
   }
 
   if (should_send_second_chunk_) {
     DCHECK(buf_size > kSecondDownloadSize);
     for (int i = 0; i < kSecondDownloadSize; ++i) {
-      buf[i] = '*';
+      buf->data()[i] = '*';
     }
     *bytes_read = kSecondDownloadSize;
     should_send_second_chunk_ = false;
     return true;
   }
 
   if (first_download_size_remaining_ > 0) {
     int send_size = std::min(first_download_size_remaining_, buf_size);
     for (int i = 0; i < send_size; ++i) {
-      buf[i] = '*';
+      buf->data()[i] = '*';
     }
     *bytes_read = send_size;
     first_download_size_remaining_ -= send_size;
 
     SetStatus(URLRequestStatus(URLRequestStatus::IO_PENDING, 0));
     DCHECK(!is_done());
     return true;
   }
 
   if (should_finish_download_) {
@@ skipping 47 matching lines @@
   ReplaceSubstringsAfterOffset(&raw_headers, 0, "\n", std::string("\0", 1));
   info->headers = new net::HttpResponseHeaders(raw_headers);
 }
 
 bool URLRequestSlowDownloadJob::GetMimeType(std::string* mime_type) {
   net::HttpResponseInfo info;
   GetResponseInfo(&info);
   return info.headers && info.headers->GetMimeType(mime_type);
 }