[Downloads] Update origin info after each response.

content/browser/download/download_item_impl.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_ITEM_IMPL_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 145 matching lines @@
   virtual std::string DebugString(bool verbose) const OVERRIDE;
 
   // All remaining public interfaces virtual to allow for DownloadItemImpl
   // mocks.
 
   // Determines the resume mode for an interrupted download. Requires
   // last_reason_ to be set, but doesn't require the download to be in
   // INTERRUPTED state.
   virtual ResumeMode GetResumeMode() const;
 
+  // Notify the download item that new origin information is available due to a
+  // resumption request receiving a response.
+  virtual void MergeOriginInfoOnResume(
+      const DownloadCreateInfo& new_create_info);
+
   // State transition operations on regular downloads --------------------------
 
   // Start the download.
   // |download_file| is the associated file on the storage medium.
   // |req_handle| is the new request handle associated with the download.
   virtual void Start(scoped_ptr<DownloadFile> download_file,
                      scoped_ptr<DownloadRequestHandleInterface> req_handle);
 
   // Needed because of intertwining with DownloadManagerImpl -------------------
 
@@ skipping 361 matching lines @@
   const net::BoundNetLog bound_net_log_;
 
   base::WeakPtrFactory<DownloadItemImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadItemImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_H_