Support resaving offline page right after it is being deleted

components/offline_pages/offline_page_archiver.h

 // Copyright 2015 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_OFFLINE_PAGES_OFFLINE_PAGE_ARCHIVER_H_
 #define COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_ARCHIVER_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
@@ skipping 46 matching lines @@
   };
 
   typedef base::Callback<void(OfflinePageArchiver* /* archiver */,
                               ArchiverResult /* result */,
                               const GURL& /* url */,
                               const base::FilePath& /* file_path */,
                               int64_t /* file_size */)> CreateArchiveCallback;
 
   virtual ~OfflinePageArchiver() {}
 
-  // Starts creating the archive in the |archives_dir|. Once archive is created
-  // |callback| will be called with the result and additional information.
+  // Starts creating the archive in the |archives_dir| with |archive_id| added
+  // to the archive filename. Once archive is created |callback| will be called
+  // with the result and additional information.
   virtual void CreateArchive(const base::FilePath& archives_dir,
+                             int64_t archive_id,
                              const CreateArchiveCallback& callback) = 0;
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_ARCHIVER_H_