Lazy load chrome.* APIs

chrome/renderer/resources/extensions/app_window_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 app_window API.
+// Custom binding for the app_window API.
+
+var binding = require('binding').Binding.create('app.window');
 
 var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+var chrome = requireNative('chrome').GetChrome();
 var sendRequest = require('sendRequest').sendRequest;
 var appWindowNatives = requireNative('app_window');
 var forEach = require('utils').forEach;
 var GetView = appWindowNatives.GetView;
 var OnContextReady = appWindowNatives.OnContextReady;
+var currentWindowInternal = require('binding').Binding.create(
+    'app.currentWindowInternal').generate();
 
-chromeHidden.registerCustomHook('app.window', function(bindingsAPI) {
+binding.registerCustomHook(function(bindingsAPI) {
   var apiFunctions = bindingsAPI.apiFunctions;
+
   apiFunctions.setCustomCallback('create',
                                  function(name, request, windowParams) {
     var view = null;
     if (windowParams.viewId)
       view = GetView(windowParams.viewId, windowParams.injectTitlebar);
 
     if (!view) {
       // No route to created window. If given a callback, trigger it with an
       // undefined object.
       if (request.callback) {
@@ skipping 49 matching lines @@
   chromeHidden.OnAppWindowClosed = function() {
     if (!chromeHidden.currentAppWindow)
       return;
     chromeHidden.currentAppWindow.onClosed.dispatch();
   };
 
   // This is an internal function, but needs to be bound with setHandleRequest
   // because it is called from a different JS context.
   apiFunctions.setHandleRequest('initializeAppWindow', function(params) {
     var AppWindow = function() {};
-    forEach(chromeHidden.internalAPIs.app.currentWindowInternal, function(fn) {
+    forEach(currentWindowInternal, function(fn) {
       AppWindow.prototype[fn] =
-          chromeHidden.internalAPIs.app.currentWindowInternal[fn];
+          currentWindowInternal[fn];
     });
     AppWindow.prototype.moveTo = window.moveTo.bind(window);
     AppWindow.prototype.resizeTo = window.resizeTo.bind(window);
     AppWindow.prototype.contentWindow = window;
     AppWindow.prototype.onClosed = new chrome.Event;
     AppWindow.prototype.close = function() {
       this.contentWindow.close();
     };
     AppWindow.prototype.getBounds = function() {
       var bounds = chromeHidden.appWindowData.bounds;
@@ skipping 43 matching lines @@
 
   if (!oldData.minimized && update.minimized)
     currentWindow["onMinimized"].dispatch();
   if (!oldData.maximized && update.maximized)
     currentWindow["onMaximized"].dispatch();
 
   if ((oldData.minimized && !update.minimized) ||
       (oldData.maximized && !update.maximized))
     currentWindow["onRestored"].dispatch();
 };
+
+exports.binding = binding.generate();