Extensions: Don't pass the selected unpacked extension path from JS to C++

chrome/browser/resources/options/extension_settings.js

 // 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.
 
 // Used for observing function of the backend datasource for this page by
 // tests.
 var webui_responded_ = false;
 
 cr.define('options', function() {
   var OptionsPage = options.OptionsPage;
@@ skipping 39 matching lines @@
       // Set up the three dev mode buttons (load unpacked, pack and update).
       $('load-unpacked').addEventListener('click',
           this.handleLoadUnpackedExtension_.bind(this));
       $('pack-extension').addEventListener('click',
           this.handlePackExtension_.bind(this));
       $('update-extensions-now').addEventListener('click',
           this.handleUpdateExtensionNow_.bind(this));
     },
 
     /**
-     * Utility function which asks the C++ to show a platform-specific file
-     * select dialog, and fire |callback| with the |filePath| that resulted.
-     * |selectType| can be either 'file' or 'folder'. |operation| can be 'load',
-     * 'packRoot', or 'pem' which are signals to the C++ to do some
-     * operation-specific configuration.
-     * @private
-     */
-    showFileDialog_: function(selectType, operation, callback) {
-      handleFilePathSelected = function(filePath) {
-        callback(filePath);
-        handleFilePathSelected = function() {};
-      };
-
-      chrome.send('extensionSettingsSelectFilePath', [selectType, operation]);
-    },
-
-    /**
      * Handles the Load Unpacked Extension button.
      * @param {Event} e Change event.
      * @private
      */
     handleLoadUnpackedExtension_: function(e) {
-      this.showFileDialog_('folder', 'load', function(filePath) {
-        chrome.send('extensionSettingsLoad', [String(filePath)]);
-      });
-
+      chrome.send('extensionSettingsLoadUnpackedExtension');
       chrome.send('coreOptionsUserMetricsAction',
                   ['Options_LoadUnpackedExtension']);
     },
 
     /**
      * Handles the Pack Extension button.
      * @param {Event} e Change event.
      * @private
      */
     handlePackExtension_: function(e) {
@@ skipping 98 matching lines @@
       function() {
         OptionsPage.closeOverlay();
       });
   }
 
   // Export
   return {
     ExtensionSettings: ExtensionSettings
   };
 });