Added last_access_time to DownloadItem and History DB

components/history/core/browser/download_row.h

Index: components/history/core/browser/download_row.h
diff --git a/components/history/core/browser/download_row.h b/components/history/core/browser/download_row.h
index d446cf09e2f84325036560ea843a4f60c1e35418..5c82d0fbf0ac065c5eb8ed726fc8a6814a9215d3 100644
--- a/components/history/core/browser/download_row.h
+++ b/components/history/core/browser/download_row.h
@@ -46,6 +46,7 @@ struct DownloadRow {
               DownloadId id,
               const std::string& guid,
               bool download_opened,
+              const base::Time& last_access,
               const std::string& ext_id,
               const std::string& ext_name,
               const std::vector<DownloadSliceInfo>& download_slice_info);
@@ -134,6 +135,9 @@ struct DownloadRow {
   // Whether this download has ever been opened from the browser.
   bool opened;
 
+  // The time when the download was last accessed.
+  base::Time last_access_time;
+
   // The id and name of the extension that created this download.
   std::string by_ext_id;
   std::string by_ext_name;