Change the type of file_type parameter to int, as the parameter actually takes or-ed bitmasks,

base/file_util.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/file_util.h"
 
 #if defined(OS_WIN)
 #include <io.h>
 #endif
 #include <stdio.h>
@@ skipping 152 matching lines @@
     if (contents)
       contents->append(buf, len);
   }
   CloseFile(file);
 
   return true;
 }
 
 bool IsDirectoryEmpty(const FilePath& dir_path) {
   FileEnumerator files(dir_path, false,
-      static_cast<FileEnumerator::FileType>(
-          FileEnumerator::FILES | FileEnumerator::DIRECTORIES));
+      FileEnumerator::FILES | FileEnumerator::DIRECTORIES);
   if (files.Next().value().empty())
     return true;
   return false;
 }
 
 FILE* CreateAndOpenTemporaryFile(FilePath* path) {
   FilePath directory;
   if (!GetTempDir(&directory))
     return NULL;
 
@@ skipping 199 matching lines @@
 // FileEnumerator
 //
 // Note: the main logic is in file_util_<platform>.cc
 
 bool FileEnumerator::ShouldSkip(const FilePath& path) {
   FilePath::StringType basename = path.BaseName().value();
   return IsDot(path) || (IsDotDot(path) && !(INCLUDE_DOT_DOT & file_type_));
 }
 
 }  // namespace