Lazy load chrome.* APIs

chrome/renderer/resources/extensions/experimental.offscreenTabs_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 experimental offscreenTabs API.
+// Custom binding for the experimental offscreenTabs API.
 
-(function() {
+var binding = require('binding').Binding.create('experimental.offscreenTabs');
 
-native function GetChromeHidden();
-
-GetChromeHidden().registerCustomHook(
+binding.registerCustomHook(
     'experimental.offscreenTabs', function(api) {
   var apiFunctions = api.apiFunctions;
 
   function maybeCopy(src, prop, dest) {
     if (src[prop] !== undefined)
       dest[prop] = src[prop];
   };
 
   function keyboardEventFilter(e) {
     var result = {
@@ skipping 31 matching lines @@
   }
 
   apiFunctions.setUpdateArgumentsPreValidate(
       'sendKeyboardEvent',
       function() { return validate(arguments, keyboardEventFilter); });
   apiFunctions.setUpdateArgumentsPreValidate(
       'sendMouseEvent',
       function() { return validate(arguments, mouseEventFilter); });
 });
 
-})();
+exports.binding = binding.generate();