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

storage/browser/fileapi/file_system_dir_url_request_job.h

 // 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.
 
 #ifndef STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_DIR_URL_REQUEST_JOB_H_
 #define STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_DIR_URL_REQUEST_JOB_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 34 matching lines @@
   class CallbackDispatcher;
 
   ~FileSystemDirURLRequestJob() override;
 
   void StartAsync();
   void DidAttemptAutoMount(base::File::Error result);
   void DidReadDirectory(base::File::Error result,
                         const std::vector<DirectoryEntry>& entries,
                         bool has_more);
 
+  // Reads metadata for the |index|-th entry in the directory. Must be called
+  // after |entries_| is filled.
+  void GetMetadata(size_t index);
+  void DidGetMetadata(size_t index,
+                      base::File::Error result,
+                      const base::File::Info& file_info);
+
+  std::vector<DirectoryEntry> entries_;
   std::string data_;
   FileSystemURL url_;
   const std::string storage_domain_;
   FileSystemContext* file_system_context_;
   base::WeakPtrFactory<FileSystemDirURLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemDirURLRequestJob);
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_DIR_URL_REQUEST_JOB_H_