Update access info when an offline page is being visited

components/offline_pages/offline_page_item.h

Index: components/offline_pages/offline_page_item.h
diff --git a/components/offline_pages/offline_page_item.h b/components/offline_pages/offline_page_item.h
index ac9bcb81d1ed794147bfcb45a2aab4de46cfd8d4..0ae4a8c21720bd26bd5127b3a0cfefd9e1c3e133 100644
--- a/components/offline_pages/offline_page_item.h
+++ b/components/offline_pages/offline_page_item.h
@@ -47,6 +47,8 @@ struct OfflinePageItem {
   base::Time creation_time;
   // The time when the offline archive was last accessed.
   base::Time last_access_time;
+  // Number of times that the offline archive has been accessed.
+  int access_count;
 };
 
 }  // namespace offline_pages