OnDownloadStarted takes DownloadItem* instead of DownloadId

content/browser/download/download_resource_handler.h

 // 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.
 
 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 71 matching lines @@
   void CancelRequest();
 
   std::string DebugString() const;
 
  private:
   virtual ~DownloadResourceHandler();
 
   // Arrange for started_cb_ to be called on the UI thread with the
   // below values, nulling out started_cb_.  Should only be called
   // on the IO thread.
-  void CallStartedCB(content::DownloadId id, net::Error error);
+  void CallStartedCB(content::DownloadItem* item, net::Error error);
 
   // If the content-length header is not present (or contains something other
   // than numbers), the incoming content_length is -1 (unknown size).
   // Set the content length to 0 to indicate unknown size to DownloadManager.
   void SetContentLength(const int64& content_length);
 
   void SetContentDisposition(const std::string& content_disposition);
 
   content::GlobalRequestID global_id_;
   int render_view_id_;
@@ skipping 24 matching lines @@
   // For DCHECKing
   bool on_response_started_called_;
 
   static const int kReadBufSize = 32768;  // bytes
   static const int kThrottleTimeMs = 200;  // milliseconds
 
   DISALLOW_COPY_AND_ASSIGN(DownloadResourceHandler);
 };
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_