Added dangerous download prompting.

chrome/browser/download/download_file.cc

 // 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.
 
 #include <Windows.h>
 #include <objbase.h>
 
 #include "chrome/browser/download/download_file.h"
 
 #include "base/file_util.h"
@@ skipping 560 matching lines @@
 
   if (downloads_.empty())
     ui_loop_->PostTask(FROM_HERE, NewRunnableMethod(
         this, &DownloadFileManager::StopUpdateTimer));
 }
 
 void DownloadFileManager::CreateDirectory(const std::wstring& directory) {
   if (!file_util::PathExists(directory))
     file_util::CreateDirectory(directory);
 }
+
+void DownloadFileManager::DeleteFile(const std::wstring& path) {
+  // Make sure we only delete files.
+  if (file_util::PathExists(path) && !file_util::DirectoryExists(path))
+    file_util::Delete(path, false);
+}