Remove some deprecated file_util wstring functions.

webkit/default_plugin/plugin_database_handler.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 "webkit/default_plugin/plugin_database_handler.h"
 
 #if defined(USE_SYSTEM_LIBXML)
 #include <parser.h>
 #include <xpath.h>
 #else
@@ skipping 31 matching lines @@
   // The time in days for which the plugins list is cached.
   // TODO(iyengar) Make this configurable.
   const int kPluginsListCacheTimeInDays = 3;
 
   plugin_finder_url_ = plugin_finder_url;
 
   PathService::Get(base::DIR_MODULE, &plugins_file_);
   plugins_file_ += L"\\chrome_plugins_file.xml";
 
   bool initiate_download = false;
-  if (!file_util::PathExists(plugins_file_)) {
+  if (!file_util::PathExists(FilePath::FromWStringHack(plugins_file_))) {
     initiate_download = true;
   } else {
     SYSTEMTIME creation_system_time = {0};
     if (!file_util::GetFileCreationLocalTime(plugins_file_,
                                              &creation_system_time)) {
       NOTREACHED();
       return false;
     }
 
     FILETIME creation_file_time = {0};
@@ skipping 285 matching lines @@
       reinterpret_cast<const char*>(plugin_download_url_val->content);
 
   SplitString(reinterpret_cast<const char*>(plugin_mime_type_vals->content),
               kMimeTypeSeparator, &plugin_detail->mime_types);
 
   plugin_detail->language =
       reinterpret_cast<const char*>(plugin_lang_val->content);
 
   return true;
 }