Introduce ResourceRequesterInfo to abstract the requester of resource request

content/browser/loader/sync_resource_handler.cc

 // Copyright (c) 2012 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 "content/browser/loader/sync_resource_handler.h"
 
 #include "base/callback_helpers.h"
 #include "base/logging.h"
 #include "content/browser/loader/netlog_observer.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
-#include "content/browser/loader/resource_message_filter.h"
 #include "content/browser/loader/resource_request_info_impl.h"
 #include "content/common/resource_messages.h"
 #include "content/public/browser/resource_dispatcher_host_delegate.h"
 #include "content/public/browser/resource_request_info.h"
 #include "net/base/io_buffer.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/redirect_info.h"
 
 namespace content {
 
@@ skipping 35 matching lines @@
   result_.final_url = redirect_info.new_url;
 
   total_transfer_size_ += request()->GetTotalReceivedBytes();
   return true;
 }
 
 bool SyncResourceHandler::OnResponseStarted(
     ResourceResponse* response,
     bool* defer) {
   const ResourceRequestInfoImpl* info = GetRequestInfo();
-  if (!info->filter())
+  DCHECK(info->requester_info().IsRenderer());
+  if (!info->requester_info().filter())
     return false;
 
   if (rdh_->delegate()) {
     rdh_->delegate()->OnResponseStarted(request(), info->GetContext(),
                                         response);
   }
 
   NetLogObserver::PopulateResponseInfo(request(), response);
 
   // We don't care about copying the status here.
@@ skipping 39 matching lines @@
 
   base::ResetAndReturn(&result_handler_).Run(&result_);
 }
 
 void SyncResourceHandler::OnDataDownloaded(int bytes_downloaded) {
   // Sync requests don't involve ResourceMsg_DataDownloaded messages
   // being sent back to renderers as progress is made.
 }
 
 }  // namespace content