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

chrome/browser/renderer_host/cross_site_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/cross_site_resource_handler.h"
 
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "chrome/browser/tab_contents/web_contents.h"
 
@@ skipping 96 matching lines @@
   if (info->is_download) {
     return next_handler_->OnResponseStarted(request_id, response);
   }
 
   // Tell the renderer to run the onunload event handler, and wait for the
   // reply.
   StartCrossSiteTransition(request_id, response, global_id);
   return true;
 }
 
-bool CrossSiteResourceHandler::OnWillRead(int request_id,
-                                          char** buf, int* buf_size,
-                                          int min_size) {
+bool CrossSiteResourceHandler::OnWillRead(int request_id, net::IOBuffer** buf,
+                                          int* buf_size, int min_size) {
   return next_handler_->OnWillRead(request_id, buf, buf_size, min_size);
 }
 
 bool CrossSiteResourceHandler::OnReadCompleted(int request_id,
                                                int* bytes_read) {
   if (!in_cross_site_transition_) {
     return next_handler_->OnReadCompleted(request_id, bytes_read);
   }
   return true;
 }
@@ skipping 113 matching lines @@
 
   // Tell the tab responsible for this request that a cross-site response is
   // starting, so that it can tell its old renderer to run its onunload
   // handler now.  We will wait to hear the corresponding ClosePage_ACK.
   CrossSiteNotifyTabTask* task =
       new CrossSiteNotifyTabTask(render_process_host_id_,
                                  render_view_id_,
                                  request_id);
   rdh_->ui_loop()->PostTask(FROM_HERE, task);
 }