Added dangerous download prompting.

base/file_util_win.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 "base/file_util.h"
 
 #include <windows.h>
 #include <shellapi.h>
 #include <shlobj.h>
 #include <time.h>
@@ skipping 358 matching lines @@
   wchar_t temp_path[MAX_PATH + 1];
   DWORD path_len = ::GetTempPath(MAX_PATH, temp_path);
   if (path_len >= MAX_PATH || path_len <= 0)
     return false;
   path->assign(temp_path);
   TrimTrailingSeparator(path);
   return true;
 }
 
 bool CreateTemporaryFileName(std::wstring* temp_file) {
-  wchar_t temp_name[MAX_PATH + 1];
   std::wstring temp_path;
 
   if (!GetTempDir(&temp_path))
     return false;
 
-  if (!GetTempFileName(temp_path.c_str(), L"", 0, temp_name))
+  return CreateTemporaryFileNameInDir(temp_path, temp_file);
+}
+
+bool CreateTemporaryFileNameInDir(const std::wstring& dir,
+                                  std::wstring* temp_file) {
+  wchar_t temp_name[MAX_PATH + 1];
+
+  if (!GetTempFileName(dir.c_str(), L"", 0, temp_name))
     return false;  // fail!
 
   DWORD path_len = GetLongPathName(temp_name, temp_name, MAX_PATH);
   if (path_len > MAX_PATH + 1 || path_len == 0)
     return false;  // fail!
 
   temp_file->assign(temp_name, path_len);
   return true;
 }
 
@@ skipping 260 matching lines @@
       return (file_type_ & FileEnumerator::DIRECTORIES) ? cur_file : Next();
     }
 
     if ((file_type_ & FileEnumerator::DIRECTORIES) == 0)
       return Next();
   }
   return (file_type_ & FileEnumerator::FILES) ? cur_file : Next();
 }
 
 }  // namespace file_util