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

chrome/browser/chromeos/file_system_provider/fake_provided_file_system.cc

 // Copyright 2014 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/chromeos/file_system_provider/fake_provided_file_system.h"
 
 #include "base/thread_task_runner_handle.h"
 #include "net/base/io_buffer.h"
 
 namespace chromeos {
@@ skipping 118 matching lines @@
     const base::FilePath& directory_path,
     const storage::AsyncFileUtil::ReadDirectoryCallback& callback) {
   storage::AsyncFileUtil::EntryList entry_list;
 
   for (Entries::const_iterator it = entries_.begin(); it != entries_.end();
        ++it) {
     const base::FilePath file_path = it->first;
     if (file_path == directory_path || directory_path.IsParent(file_path)) {
       const EntryMetadata* const metadata = it->second->metadata.get();
       entry_list.push_back(storage::DirectoryEntry(
-          metadata->name,
-          metadata->is_directory ? storage::DirectoryEntry::DIRECTORY
-                                 : storage::DirectoryEntry::FILE,
-          metadata->size,
-          metadata->modification_time));
+          metadata->name, metadata->is_directory
+                              ? storage::DirectoryEntry::DIRECTORY
+                              : storage::DirectoryEntry::FILE));
     }
   }
 
   return PostAbortableTask(base::Bind(
       callback, base::File::FILE_OK, entry_list, false /* has_more */));
 }
 
 AbortCallback FakeProvidedFileSystem::OpenFile(
     const base::FilePath& entry_path,
     OpenFileMode mode,
@@ skipping 263 matching lines @@
 }
 
 void FakeProvidedFileSystem::AbortMany(const std::vector<int>& task_ids) {
   for (size_t i = 0; i < task_ids.size(); ++i) {
     tracker_.TryCancel(task_ids[i]);
   }
 }
 
 }  // namespace file_system_provider
 }  // namespace chromeos