Added dangerous download prompting.

chrome/browser/download/download_file.h

 // Copyright (c) 2006-2008 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.
 //
 // Objects that handle file operations for downloads, on the download thread.
 //
 // The DownloadFileManager owns a set of DownloadFile objects, each of which
 // represent one in progress download and performs the disk IO for that
 // download. The DownloadFileManager itself is a singleton object owned by the
 // ResourceDispatcherHost.
@@ skipping 192 matching lines @@
 
   // Timer notifications.
   void UpdateInProgressDownloads();
 
   MessageLoop* file_loop() const { return file_loop_; }
 
   // Called by the download manager at initialization to ensure the default
   // download directory exists.
   void CreateDirectory(const std::wstring& directory);
 
+  // Called by the donwload manager to delete non validated dangerous downloads.
+  void DeleteFile(const std::wstring& path);
+
  private:
   // Timer helpers for updating the UI about the current progress of a download.
   void StartUpdateTimer();
   void StopUpdateTimer();
 
   // Clean up helper that runs on the download thread.
   void OnShutdown();
 
   // Called only on UI thread to get the DownloadManager for a tab's profile.
   static DownloadManager* DownloadManagerFromRenderIds(int render_process_id,
@@ skipping 41 matching lines @@
   // Used for progress updates on the UI thread, mapping download->id() to bytes
   // received so far. Written to by the file thread and read by the UI thread.
   typedef base::hash_map<int, int64> ProgressMap;
   ProgressMap ui_progress_;
   Lock progress_lock_;
 
   DISALLOW_EVIL_CONSTRUCTORS(DownloadFileManager);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_FILE_H__