Lazy load chrome.* APIs

chrome/renderer/resources/extensions/tab_capture_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 Tab Capture API.
-var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+// Custom binding for the Tab Capture API.
 
-chromeHidden.registerCustomHook('tabCapture',
-                                function(bindingsAPI, extensionId) {
+var binding = require('binding').Binding.create('tabCapture');
+
+binding.registerCustomHook(function(bindingsAPI, extensionId) {
   var apiFunctions = bindingsAPI.apiFunctions;
 
   apiFunctions.setCustomCallback('capture',
                                  function(name, request, response) {
     if (response && request.callback) {
       var callback = request.callback;
       var successFunc = function(stream) {
         callback(stream);
       };
       var errorFunc = function() {
         callback(null);
       };
 
       var options = {};
       if (response.audioConstraints)
         options.audio = response.audioConstraints;
       if (response.videoConstraints)
         options.video = response.videoConstraints;
 
       navigator.webkitGetUserMedia(options, successFunc, errorFunc);
     } else {
       request.callback();
     }
     request.callback = null;
   });
 });
+
+exports.binding = binding.generate();