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

chrome/browser/renderer_host/safe_browsing_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/safe_browsing_resource_handler.h"
 
 #include "chrome/browser/renderer_host/resource_dispatcher_host.h"
 
 // Maximum time to wait for a gethash response from the Safe Browsing servers.
 static const int kMaxGetHashMs = 1000;
@@ skipping 59 matching lines @@
 
 void SafeBrowsingResourceHandler::OnGetHashTimeout() {
   if (!in_safe_browsing_check_)
     return;
 
   safe_browsing_->CancelCheck(this);
   OnUrlCheckResult(GURL::EmptyGURL(), SafeBrowsingService::URL_SAFE);
 }
 
 bool SafeBrowsingResourceHandler::OnWillRead(int request_id,
-                                             char** buf, int* buf_size,
+                                             net::IOBuffer** buf, int* buf_size,
                                              int min_size) {
   if (in_safe_browsing_check_ && pause_time_.is_null()) {
     pause_time_ = base::Time::Now();
     MessageLoop::current()->PostDelayedTask(
         FROM_HERE,
         NewRunnableMethod(this, &SafeBrowsingResourceHandler::OnGetHashTimeout),
         kMaxGetHashMs);
   }
 
   if (in_safe_browsing_check_ || displaying_blocking_page_) {
@@ skipping 79 matching lines @@
       next_handler_->OnResponseCompleted(
           queued_error_request_id_, *queued_error_.get());
       queued_error_.reset();
     }
   } else {
     rdh_->CancelRequest(render_process_host_id_, paused_request_id_, false);
   }
 
   Release();
 }