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

chrome/browser/media_galleries/fileapi/native_media_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 "chrome/browser/media_galleries/fileapi/native_media_file_util.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 561 matching lines @@
 
     // NativeMediaFileUtil skip criteria.
     if (MediaPathFilter::ShouldSkip(enum_path))
       continue;
     if (!info.IsDirectory() && !media_path_filter_->Match(enum_path))
       continue;
 
     storage::DirectoryEntry entry;
     entry.is_directory = info.IsDirectory();
     entry.name = enum_path.BaseName().value();
-    entry.size = info.GetSize();
-    entry.last_modified_time = info.GetLastModifiedTime();
 
     file_list->push_back(entry);
   }
 
   return base::File::FILE_OK;
 }
 
 base::File::Error NativeMediaFileUtil::DeleteFileSync(
     storage::FileSystemOperationContext* context,
     const storage::FileSystemURL& url) {
@@ skipping 77 matching lines @@
     return base::File::FILE_ERROR_FAILED;
 
   if (!file_info.is_directory &&
       !media_path_filter_->Match(file_path)) {
     return failure_error;
   }
 
   *local_file_path = file_path;
   return base::File::FILE_OK;
 }