Added DownloadItem::Observer to JobController.

content/browser/background_fetch/background_fetch_job_data.h

 // Copyright 2017 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_BACKGROUND_FETCH_BACKGROUND_FETCH_JOB_DATA_H_
 #define CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_JOB_DATA_H_
 
 #include <string>
 #include <unordered_map>
 
@@ skipping 20 matching lines @@
   // Called by the JobController to get a BackgroundFetchRequestInfo to
   // process.
   const BackgroundFetchRequestInfo& GetNextBackgroundFetchRequestInfo();
 
   // Indicates whether all requests have been handed to the JobController.
   bool HasRequestsRemaining() const;
 
   // Indicates whether all requests have been handed out and completed.
   bool IsComplete() const;
 
+  // Inform the JobData of the GUID the DownloadManager assigned to this
+  // request.
+  void SetRequestDownloadGuid(const std::string& request_guid,
+                              const std::string& download_guid);
+
  private:
   BackgroundFetchRequestInfos& request_infos_;
 
   // Map from fetch_guid to index in request_infos_. Only currently
   // outstanding requests should be in this map.
   std::unordered_map<std::string, int> request_info_index_;
   size_t next_request_info_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundFetchJobData);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_JOB_DATA_H_