Lazy load chrome.* APIs

chrome/renderer/resources/extensions/web_request_internal_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 bindings for the webRequestInternal API.
+// Custom binding for the webRequestInternal API.
 
-var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+var binding = require('binding').Binding.create('webRequestInternal');
+
 var sendRequest = require('sendRequest').sendRequest;
 
-chromeHidden.registerCustomHook('webRequestInternal', function(api) {
+binding.registerCustomHook(function(api) {
   var apiFunctions = api.apiFunctions;
 
   apiFunctions.setHandleRequest('addEventListener', function() {
     var args = Array.prototype.slice.call(arguments);
     sendRequest(this.name, args, this.definition.parameters,
                 {forIOThread: true});
   });
 
   apiFunctions.setHandleRequest('eventHandled', function() {
     var args = Array.prototype.slice.call(arguments);
     sendRequest(this.name, args, this.definition.parameters,
                 {forIOThread: true});
   });
 });
+
+exports.binding = binding.generate();