Do not call stat() when reading directories via File API.

storage/common/fileapi/directory_entry.cc

 // Copyright 2013 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 "storage/common/fileapi/directory_entry.h"
 
 namespace storage {
 
-DirectoryEntry::DirectoryEntry() : is_directory(false), size(0) {}
+DirectoryEntry::DirectoryEntry() : is_directory(false) {}
 
-DirectoryEntry::DirectoryEntry(const std::string& name,
-                               DirectoryEntryType type,
-                               int64 size,
-                               const base::Time& last_modified_time)
+DirectoryEntry::DirectoryEntry(const std::string& name, DirectoryEntryType type)
     : name(base::FilePath::FromUTF8Unsafe(name).value()),
-      is_directory(type == DIRECTORY),
-      size(size),
-      last_modified_time(last_modified_time) {
-}
+      is_directory(type == DIRECTORY) {}
 
 }  // namespace storage