[Quota] Move quota related callbacks to separate file

webkit/common/fileapi/file_system_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 "webkit/common/fileapi/file_system_util.h"
 
+#include <algorithm>
+
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "googleurl/src/gurl.h"
 #include "webkit/base/origin_url_conversions.h"
 
 namespace fileapi {
 
@@ skipping 330 matching lines @@
   if (!optional_root_name.empty()) {
     if (base::FilePath::FromUTF8Unsafe(optional_root_name).ReferencesParent())
       return std::string();
     root.append(optional_root_name);
     root.append("/");
   }
   return root;
 }
 
 }  // namespace fileapi