chromium/src/third_party/blink/renderer/modules/filesystem/file_callback.idl

// Copyright 2017 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.

// https://wicg.github.io/entries-api/#callbackdef-filecallback
callback interface FileCallback {
    void handleEvent(File file);
};