Added last_access_time to DownloadItem and History DB

chrome/browser/android/download/download_manager_service.h

Index: chrome/browser/android/download/download_manager_service.h
diff --git a/chrome/browser/android/download/download_manager_service.h b/chrome/browser/android/download/download_manager_service.h
index fbc7f8a4ac721302ebc71e120570ecd0629843f1..4f1407491bd3a9a2029478952826c1715aeb79c8 100644
--- a/chrome/browser/android/download/download_manager_service.h
+++ b/chrome/browser/android/download/download_manager_service.h
@@ -94,6 +94,11 @@ class DownloadManagerService : public AllDownloadItemNotifier::Observer,
                                           const JavaParamRef<jobject>& obj,
                                           bool is_off_the_record);
 
+  // Called to update the last access time associated with a download.
+  void UpdateLastAccessTime(JNIEnv* env,
+                            const JavaParamRef<jobject>& obj,
+                            const JavaParamRef<jstring>& jdownload_guid);
+
   // DownloadHistory::Observer methods.
   void OnHistoryQueryComplete() override;