Do some cleanup of file path name handling.

chrome/browser/download/download_manager.cc

 // Copyright (c) 2006-2009 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/download_manager.h"
 
 #include "app/l10n_util.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ skipping 1194 matching lines @@
         extension += append_extension;
       }
     }
   }
 
   generated_extension->swap(extension);
 }
 
 void DownloadManager::GenerateFilename(DownloadCreateInfo* info,
                                        FilePath* generated_name) {
-  *generated_name = FilePath::FromWStringHack(
-      net::GetSuggestedFilename(GURL(info->url),
-                                info->content_disposition,
-                                info->referrer_charset,
-                                L"download"));
+  *generated_name = net::GetSuggestedFilename(GURL(info->url),
+                                              info->content_disposition,
+                                              info->referrer_charset,
+                                              "download");
   DCHECK(!generated_name->empty());
 
   GenerateSafeFilename(info->mime_type, generated_name);
 }
 
 void DownloadManager::AddObserver(Observer* observer) {
   observers_.AddObserver(observer);
   observer->ModelChanged();
 }
 
@@ skipping 319 matching lines @@
 
   if (contents)
     contents->OnStartDownload(download);
 }
 
 // Clears the last download path, used to initialize "save as" dialogs.
 void DownloadManager::ClearLastDownloadPath() {
   last_download_path_ = FilePath();
 }