Convert base::file_util to use File instead of PlatformFile.

base/nix/mime_util_xdg.cc

 // Copyright (c) 2012 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/nix/mime_util_xdg.h"
 
 #include <cstdlib>
 #include <list>
 #include <map>
 #include <vector>
@@ skipping 369 matching lines @@
     return false;
   }
   subdirs_[dir] = num++;
   info_array_.reset(new SubDirInfo[num]);
   return true;
 }
 
 bool CheckDirExistsAndGetMtime(const FilePath& dir, Time* last_modified) {
   if (!DirectoryExists(dir))
     return false;
-  PlatformFileInfo file_info;
+  File::Info file_info;
   if (!GetFileInfo(dir, &file_info))
     return false;
   *last_modified = file_info.last_modified;
   return true;
 }
 
 // Make sure |dir| exists and add it to the list of icon directories.
 void TryAddIconDir(const FilePath& dir) {
   Time last_modified;
   if (!CheckDirExistsAndGetMtime(dir, &last_modified))
@@ skipping 243 matching lines @@
       icon_file = LookupIconInDefaultTheme(icon_names[i], size);
       if (!icon_file.empty())
         return icon_file;
     }
   }
   return FilePath();
 }
 
 }  // namespace nix
 }  // namespace base