Make passing of DownloadRequestHandle separate from DownloadCreateInfo.

content/browser/download/download_item.h

 // Copyright (c) 2011 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.
 //
 // Each download is represented by a DownloadItem, and all DownloadItems
 // are owned by the DownloadManager which maintains a global list of all
 // downloads. DownloadItems are created when a user initiates a download,
 // and exist for the duration of the browser life time.
 //
 // Download observers:
@@ skipping 101 matching lines @@
     virtual ~Observer() {}
   };
 
   // Constructing from persistent store:
   DownloadItem(DownloadManager* download_manager,
                const DownloadPersistentStoreInfo& info);
 
   // Constructing for a regular download:
   DownloadItem(DownloadManager* download_manager,
                const DownloadCreateInfo& info,
+               const DownloadRequestHandle& request_handle,
                bool is_otr);
 
   // Constructing for the "Save Page As..." feature:
   DownloadItem(DownloadManager* download_manager,
                const FilePath& path,
                const GURL& url,
                bool is_otr,
                DownloadId download_id);
 
   virtual ~DownloadItem();
@@ skipping 351 matching lines @@
   // only.
   bool open_enabled_;
 
   // Did the delegate delay calling Complete on this download?
   bool delegate_delayed_complete_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadItem);
 };
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_H_