For downloads requiring a user gesture, also require...

chrome/browser/download/download_item.h

 // Copyright (c) 2011 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.
 //
 // Each download is represented by a DownloadItem, and all DownloadItems
 // are owned by the DownloadManager which maintains a global list of all
 // downloads. DownloadItems are created when a user initiates a download,
 // and exist for the duration of the browser life time.
 //
 // Download observers:
@@ skipping 259 matching lines @@
   bool is_paused() const { return is_paused_; }
   bool open_when_complete() const { return open_when_complete_; }
   void set_open_when_complete(bool open) { open_when_complete_ = open; }
   SafetyState safety_state() const { return safety_state_; }
   void set_safety_state(SafetyState safety_state) {
     safety_state_ = safety_state;
   }
   // Why |safety_state_| is not SAFE.
   DangerType GetDangerType() const;
   bool IsDangerous() const;
+  void MarkFileDangerous();
   void MarkUrlDangerous();
 
   bool auto_opened() { return auto_opened_; }
   FilePath target_name() const { return state_info_.target_name; }
   bool save_as() const { return state_info_.prompt_user_for_save_location; }
   bool is_otr() const { return is_otr_; }
   bool is_extension_install() const {
     return state_info_.is_extension_install;
   }
   FilePath suggested_path() const { return state_info_.suggested_path; }
@@ skipping 136 matching lines @@
   // Did the user open the item either directly or indirectly (such as by
   // setting always open files of this type)? The shelf also sets this field
   // when the user closes the shelf before the item has been opened but should
   // be treated as though the user opened it.
   bool opened_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadItem);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_H_