[Extensions] Make chrome://extensions use developerPrivate for unpacked loading

third_party/closure_compiler/externs/developer_private.js

 // Copyright 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.
 
 /** @fileoverview Externs generated from namespace: developerPrivate */
 
 // Note: hand-modified to change Array to !Array in ItemInfo typedef, and add
 // typedef {string} for idl enums.
 
 /**
@@ skipping 58 matching lines @@
  *   extension_id: string,
  *   render_process_id: string,
  *   render_view_id: string,
  *   incognito: boolean
  * }}
  */
 var InspectOptions;
 
 /**
  * @typedef {{
- *   failQuietly: boolean
+ *   failQuietly: (boolean|undefined)
  * }}
  */
 var ReloadOptions;
 
 /**
+ * @typedef {{
+ *   failQuietly: (boolean|undefined)
+ * }}
+ */
+var LoadUnpackedOptions;
+
+/**
  * @typedef {string}
  */
 var PackStatus;
 
 /**
  * @typedef {string}
  */
 var FileType;
 
 /**
@@ skipping 129 matching lines @@
  * Allows / Disallows an extension to run in incognito mode.
  * @param {string} extensionId The id of the extension.
  * @param {boolean} allow Whether or not the extension should be allowed
  * incognito.
  * @param {Function=} callback
  */
 chrome.developerPrivate.allowIncognito = function(extensionId, allow, callback) {};
 
 /**
  * Loads a user-selected unpacked item.
+ * @param {LoadUnpackedOptions=} options Additional configuration parameters.
  * @param {Function=} callback
  */
-chrome.developerPrivate.loadUnpacked = function(callback) {};
+chrome.developerPrivate.loadUnpacked = function(options, callback) {};
 
 /**
  * Loads an extension / app.
  * @param {Object} directory The directory to load the extension from.
  * @param {Function} callback
  */
 chrome.developerPrivate.loadDirectory = function(directory, callback) {};
 
 /**
  * Open Dialog to browse to an entry.
@@ skipping 30 matching lines @@
 chrome.developerPrivate.requestFileSource = function(properties, callback) {};
 
 /**
  * Open the developer tools to focus on a particular error.
  * @param {OpenDevToolsProperties} properties
  */
 chrome.developerPrivate.openDevTools = function(properties) {};
 
 /** @type {!ChromeEvent} */
 chrome.developerPrivate.onItemStateChanged;