Web expose FileSystemFileEntry, FileSystemDirectoryEntry and friends

third_party/WebKit/Source/devtools/front_end/host/InspectorFrontendHostAPI.js

 // Copyright (c) 2015 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.
 /** @interface */
 function InspectorFrontendHostAPI() {
 }
 window.InspectorFrontendHostAPI = InspectorFrontendHostAPI;
 /** @typedef
 {{
     type: string,
@@ skipping 169 matching lines @@
   copyText(text) {},
 
   /**
    * @param {string} url
    */
   inspectedURLChanged(url) {},
 
   /**
    * @param {string} fileSystemId
    * @param {string} registeredName
-   * @return {?DOMFileSystem}
+   * @return {?FileSystem}
    */
   isolatedFileSystem(fileSystemId, registeredName) {},
 
   /**
    * @param {string} url
    * @param {string} headers
    * @param {number} streamId
    * @param {function(!InspectorFrontendHostAPI.LoadNetworkResourceResult)} callback
    */
   loadNetworkResource(url, headers, streamId, callback) {},
@@ skipping 103 matching lines @@
    */
   isUnderTest() {},
 
   readyForTest() {},
 
   /**
    * @return {boolean}
    */
   isHostedMode() {}
 };