[NTP::Downloads] Consider recently visited offline pages not outdated.

chrome/browser/ntp_snippets/download_suggestions_provider.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 CHROME_BROWSER_NTP_SNIPPETS_DOWNLOAD_SUGGESTIONS_PROVIDER_H_
 #define CHROME_BROWSER_NTP_SNIPPETS_DOWNLOAD_SUGGESTIONS_PROVIDER_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 123 matching lines @@
 
   // Converts an OfflinePageItem to a ContentSuggestion for the
   // |provided_category_|.
   ntp_snippets::ContentSuggestion ConvertOfflinePage(
       const offline_pages::OfflinePageItem& offline_page) const;
 
   // Converts DownloadItem to a ContentSuggestion for the |provided_category_|.
   ntp_snippets::ContentSuggestion ConvertDownloadItem(
       const content::DownloadItem& download_item) const;
 
-  // Returns true if a download published time is considered too old for the
-  // download to be shown.
-  bool IsDownloadOutdated(const base::Time& published_time);
+  // Returns true if a download published and last visited times are considered
+  // too old for the download to be shown.
+  bool IsDownloadOutdated(const base::Time& published_time,
+                          const base::Time& last_visited_time);
 
   // Adds |item| to the internal asset download cache if all of the following
   // holds:
   // - the download is completed;
   // - its suggestion has not been dismissed;
   // - there are less than |kMaxSuggestionsCount| items cached or the oldest
   //     cached item is older than the current item (the oldest item is removed
   //     then);
   // - the item is not present in the cache yet.
   // Returns |true| if the item has been added.
@@ skipping 74 matching lines @@
   std::vector<const content::DownloadItem*> cached_asset_downloads_;
 
   bool is_asset_downloads_initialization_complete_;
 
   base::WeakPtrFactory<DownloadSuggestionsProvider> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadSuggestionsProvider);
 };
 
 #endif  // CHROME_BROWSER_NTP_SNIPPETS_DOWNLOAD_SUGGESTIONS_PROVIDER_H_