Added last_access_time to DownloadItem and History DB

content/browser/download/download_item_impl.h

Index: content/browser/download/download_item_impl.h
diff --git a/content/browser/download/download_item_impl.h b/content/browser/download/download_item_impl.h
index c899f25016b113ef24356a9f5cb565b2d8be20e4..4c186c96049d4b6bf180fc237e27daf99fbbbc12 100644
--- a/content/browser/download/download_item_impl.h
+++ b/content/browser/download/download_item_impl.h
@@ -74,6 +74,7 @@ class CONTENT_EXPORT DownloadItemImpl
                    DownloadDangerType danger_type,
                    DownloadInterruptReason interrupt_reason,
                    bool opened,
+                   const base::Time& last_access_time,
                    const net::NetLogWithSource& net_log);
 
   // Constructing for a regular download.
@@ -158,11 +159,13 @@ class CONTENT_EXPORT DownloadItemImpl
   bool GetOpenWhenComplete() const override;
   bool GetAutoOpened() override;
   bool GetOpened() const override;
+  base::Time GetLastAccessTime() const override;
   BrowserContext* GetBrowserContext() const override;
   WebContents* GetWebContents() const override;
   void OnContentCheckCompleted(DownloadDangerType danger_type) override;
   void SetOpenWhenComplete(bool open) override;
   void SetOpened(bool opened) override;
+  void UpdateLastAccessTime() override;
   void SetDisplayName(const base::FilePath& name) override;
   std::string DebugString(bool verbose) const override;
 
@@ -617,6 +620,9 @@ class CONTENT_EXPORT DownloadItemImpl
   // be treated as though the user opened it.
   bool opened_ = false;
 
+  // Time when the download was last accessed.
+  base::Time last_access_time_;
+
   // Did the delegate delay calling Complete on this download?
   bool delegate_delayed_complete_ = false;