Convert download manager to FilePath.

chrome/browser/download/save_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 "chrome/browser/download/save_file.h"
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
@@ skipping 83 matching lines @@
 bool SaveFile::Open(const char* open_mode) {
   DCHECK(!full_path_.empty());
   file_ = file_util::OpenFile(full_path_, open_mode);
   if (!file_) {
     return false;
   }
 #if defined(OS_WIN)
   // Sets the zone to tell Windows that this file comes from the Internet.
   // We ignore the return value because a failure is not fatal.
   // TODO(port): Similarly mark on Mac.
-  win_util::SetInternetZoneIdentifier(full_path_);
+  win_util::SetInternetZoneIdentifier(FilePath::FromWStringHack(full_path_));
 #endif
   return true;
 }