[Reading List iOS] Store distillation date and size.

ios/chrome/browser/reading_list/url_downloader.h

 // Copyright 2016 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 IOS_CHROME_BROWSER_READING_LIST_URL_DOWNLOADER_H_
 #define IOS_CHROME_BROWSER_READING_LIST_URL_DOWNLOADER_H_
 
 #include <queue>
 
 #include "base/callback.h"
@@ skipping 50 matching lines @@
   // downloaded, the GURL of the page that was downloaded after redirections, a
   // SuccessState indicating the outcome of the download, the path to the
   // downloaded page (relative to |OfflineRootDirectoryPath()|, and the title of
   // the url, and returns void.
   // The path to downloaded file and title should not be used in case of
   // failure.
   using DownloadCompletion = base::Callback<void(const GURL&,
                                                  const GURL&,
                                                  SuccessState,
                                                  const base::FilePath&,
+                                                 int64_t size,
                                                  const std::string&)>;
 
   // Create a URL downloader with completion callbacks for downloads and
   // deletions. The completion callbacks will be called with the original url
   // and a boolean indicating success. For downloads, if distillation was
   // successful, it will also include the distilled url and extracted title.
   URLDownloader(
       dom_distiller::DistillerFactory* distiller_factory,
       reading_list::ReadingListDistillerPageFactory* distiller_page_factory,
       PrefService* prefs,
@@ skipping 93 matching lines @@
   dom_distiller::DistillerFactory* distiller_factory_;
   PrefService* pref_service_;
   const DownloadCompletion download_completion_;
   const SuccessCompletion delete_completion_;
 
   std::deque<Task> tasks_;
   bool working_;
   base::FilePath base_directory_;
   GURL original_url_;
   GURL distilled_url_;
+  int64_t saved_size_;
   std::string mime_type_;
   // Fetcher used to redownload the document and save it in the sandbox.
   std::unique_ptr<net::URLFetcher> fetcher_;
   // URLRequestContextGetter needed for the URLFetcher.
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
   std::unique_ptr<dom_distiller::DistillerViewerInterface> distiller_;
   base::CancelableTaskTracker task_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(URLDownloader);
 };
 
 #endif  // IOS_CHROME_BROWSER_READING_LIST_URL_DOWNLOADER_H_