Populate the response blob for finished Background Fetches

content/browser/background_fetch/background_fetch_context.h

Index: content/browser/background_fetch/background_fetch_context.h
diff --git a/content/browser/background_fetch/background_fetch_context.h b/content/browser/background_fetch/background_fetch_context.h
index 8e16a169809078f96b36bc7b1179275cc66014e8..6d5a4d1b6502d13875d920de4d14e935d053b169 100644
--- a/content/browser/background_fetch/background_fetch_context.h
+++ b/content/browser/background_fetch/background_fetch_context.h
@@ -113,7 +113,9 @@ class CONTENT_EXPORT BackgroundFetchContext
 
   // Called when all processing for the |registration_id| has been finished and
   // the job, including its associated data, is ready to be deleted.
-  void DeleteRegistration(const BackgroundFetchRegistrationId& registration_id);
+  void DeleteRegistration(
+      const BackgroundFetchRegistrationId& registration_id,
+      const std::vector<std::unique_ptr<BlobHandle>>& blob_handles);
 
   // |this| is owned, indirectly, by the BrowserContext.
   BrowserContext* browser_context_;