[Downloads] Use the initiating StoragePartition for resumption.

components/history/core/browser/download_row.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 COMPONENTS_HISTORY_CORE_BROWSER_DOWNLOAD_ROW_H_
 #define COMPONENTS_HISTORY_CORE_BROWSER_DOWNLOAD_ROW_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/time/time.h"
 #include "components/history/core/browser/download_types.h"
 #include "url/gurl.h"
 
 namespace history {
 
 // Contains the information that is stored in the download system's persistent
 // store (or refers to it). DownloadHistory uses this to communicate with the
 // DownloadDatabase through the HistoryService.
 struct DownloadRow {
   DownloadRow();
   DownloadRow(const base::FilePath& current_path,
               const base::FilePath& target_path,
               const std::vector<GURL>& url_chain,
               const GURL& referrer_url,
+              const GURL& site_url,
               const GURL& tab_url,
               const GURL& tab_referrer_url,
               const std::string& http_method,
               const std::string& mime_type,
               const std::string& original_mime_type,
               const base::Time& start,
               const base::Time& end,
               const std::string& etag,
               const std::string& last_modified,
               int64_t received,
@@ skipping 21 matching lines @@
 
   // The URL redirect chain through which we are downloading.  The front
   // is the url that the initial request went to, and the back is the
   // url from which we ended up getting data.  This is not changed by
   // UpdateDownload().
   std::vector<GURL> url_chain;
 
   // The URL that referred us. Is not changed by UpdateDownload().
   GURL referrer_url;
 
+  // The site URL for the site instance that initiated the download.
+  GURL site_url;
+
   // The URL of the tab that initiated the download, if any. Not changed by
   // UpdateDownload().
   GURL tab_url;
 
   // The referrer of the tab that initialized the download, if any. Not changed
   // by UpdateDownload();
   GURL tab_referrer_url;
 
   // HTTP method used for the request. GET is assumed if the method was not
   // stored for a download in the history database.
@@ skipping 49 matching lines @@
   bool opened;
 
   // The id and name of the extension that created this download.
   std::string by_ext_id;
   std::string by_ext_name;
 };
 
 }  // namespace history
 
 #endif  // COMPONENTS_HISTORY_CORE_BROWSER_DOWNLOAD_ROW_H_