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

chrome/browser/renderer_host/sync_resource_handler.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/renderer_host/sync_resource_handler.h"
 
 SyncResourceHandler::SyncResourceHandler(
     ResourceDispatcherHost::Receiver* receiver,
     const GURL& url,
     IPC::Message* result_message)
-    : receiver_(receiver),
+    : read_buffer_(new net::IOBuffer(kReadBufSize)),
+      receiver_(receiver),
       result_message_(result_message) {
   result_.final_url = url;
   result_.filter_policy = FilterPolicy::DONT_FILTER;
 }
 
 bool SyncResourceHandler::OnRequestRedirected(int request_id,
                                               const GURL& new_url) {
   result_.final_url = new_url;
   return true;
 }
 
 bool SyncResourceHandler::OnResponseStarted(int request_id,
                                             ResourceResponse* response) {
   // We don't care about copying the status here.
   result_.headers = response->response_head.headers;
   result_.mime_type = response->response_head.mime_type;
   result_.charset = response->response_head.charset;
   return true;
 }
 
-bool SyncResourceHandler::OnWillRead(int request_id,
-                                     char** buf, int* buf_size, int min_size) {
+bool SyncResourceHandler::OnWillRead(int request_id, net::IOBuffer** buf,
+                                     int* buf_size, int min_size) {
   DCHECK(min_size == -1);
-  *buf = read_buffer_;
+  *buf = read_buffer_.get();
   *buf_size = kReadBufSize;
   return true;
 }
 
 bool SyncResourceHandler::OnReadCompleted(int request_id, int* bytes_read) {
   if (!*bytes_read)
     return true;
-  result_.data.append(read_buffer_, *bytes_read);
+  result_.data.append(read_buffer_->data(), *bytes_read);
   return true;
 }
 
 bool SyncResourceHandler::OnResponseCompleted(int request_id,
                                               const URLRequestStatus& status) {
   result_.status = status;
 
   ViewHostMsg_SyncLoad::WriteReplyParams(result_message_, result_);
   receiver_->Send(result_message_);
   return true;
 }