Revert 184837

chrome/renderer/resources/extensions/media_galleries_custom_bindings.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.
 
-// Custom binding for the Media Gallery API.
-
-var binding = require('binding').Binding.create('mediaGalleries');
+// Custom bindings for the Media Gallery API.
 
 var mediaGalleriesNatives = requireNative('mediaGalleries');
 
+var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+
 var mediaGalleriesMetadata = {};
 
-binding.registerCustomHook(function(bindingsAPI, extensionId) {
+chromeHidden.registerCustomHook('mediaGalleries',
+                                function(bindingsAPI, extensionId) {
   var apiFunctions = bindingsAPI.apiFunctions;
 
   // getMediaFileSystems uses a custom callback so that it can instantiate and
   // return an array of file system objects.
   apiFunctions.setCustomCallback('getMediaFileSystems',
                                  function(name, request, response) {
     var result = null;
     mediaGalleriesMetadata = {};  // Clear any previous metadata.
     if (response) {
       result = [];
@@ skipping 16 matching lines @@
 
   apiFunctions.setHandleRequest('getMediaFileSystemMetadata',
                                 function(filesystem) {
     if (filesystem && filesystem.name &&
         mediaGalleriesMetadata[filesystem.name]) {
       return mediaGalleriesMetadata[filesystem.name];
     }
     return {};
   });
 });
-
-exports.binding = binding.generate();