Remove code path that passes a file handle to the renderer...

chrome/browser/renderer_host/resource_dispatcher_host.h

 // 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.
 
 // This is the browser side of the resource dispatcher, it receives requests
 // from the child process (i.e. [Renderer, Plugin, Worker]ProcessHost), and
 // dispatches them to URLRequests. It then fowards the messages from the
 // URLRequests back to the correct process for handling.
 //
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
@@ skipping 472 matching lines @@
                          int request_id,
                          const ViewHostMsg_Resource_Request& request_data);
   void OnSyncLoad(int request_id,
                   const ViewHostMsg_Resource_Request& request_data,
                   IPC::Message* sync_result);
   void BeginRequest(int request_id,
                     const ViewHostMsg_Resource_Request& request_data,
                     IPC::Message* sync_result,  // only valid for sync
                     int route_id);  // only valid for async
   void OnDataReceivedACK(int request_id);
-  void OnDownloadProgressACK(int request_id);
   void OnUploadProgressACK(int request_id);
   void OnCancelRequest(int request_id);
 
   // Returns true if the message passed in is a resource related message.
   static bool IsResourceDispatcherHostMessage(const IPC::Message&);
 
   PendingRequestList pending_requests_;
 
   // We cache the UI message loop so we can create new UI-related objects on it.
   MessageLoop* ui_loop_;
@@ skipping 59 matching lines @@
   // Used during IPC message dispatching so that the handlers can get a pointer
   // to the source of the message.
   Receiver* receiver_;
 
   static bool g_is_http_prioritization_enabled;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_H_