Make ExtensionMsg_MessageInvoke run a module system function rather than a

chrome/renderer/resources/extensions/app_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 app API.
 
 var GetAvailability = requireNative('v8_context').GetAvailability;
 if (!GetAvailability('app').is_available) {
   exports.chromeApp = {};
-  exports.chromeHiddenApp = {};
+  exports.onInstallStateResponse = function(){};
   return;
 }
 
 var appNatives = requireNative('app');
 var chrome = requireNative('chrome').GetChrome();
 var process = requireNative('process');
 var extensionId = process.GetExtensionId();
 var logActivity = requireNative('activityLogger');
 
 function wrapForLogging(fun) {
@@ skipping 31 matching lines @@
 //
 // So, define it manually, and let the getIsInstalled function act as its
 // documentation.
 if (!extensionId)
   app.__defineGetter__('isInstalled', appNatives.GetIsInstalled);
 else
   app.__defineGetter__('isInstalled',
                        wrapForLogging(appNatives.GetIsInstalled));
 
 // Called by app_bindings.cc.
-// This becomes chromeHidden.app
-var chromeHiddenApp = {
-  onInstallStateResponse: function(state, callbackId) {
-    if (callbackId) {
-      callbacks[callbackId](state);
-      delete callbacks[callbackId];
-    }
-  }
-};
+function onInstallStateResponse(state, callbackId) {
+  var callback = callbacks[callbackId];
+  delete callbacks[callbackId];
+  if (typeof(callback) == 'function')
+    callback(state);
+}
 
 // TODO(kalman): move this stuff to its own custom bindings.
 var callbacks = {};
 var nextCallbackId = 1;
 
 app.installState = function getInstallState(callback) {
   var callbackId = nextCallbackId++;
   callbacks[callbackId] = callback;
   appNatives.GetInstallState(callbackId);
 };
 if (extensionId)
   app.installState = wrapForLogging(app.installState);
 
-// These must match the names in InstallAppbinding() in
+// This must match InstallAppBindings() in
 // chrome/renderer/extensions/dispatcher.cc.
 exports.chromeApp = app;
-exports.chromeHiddenApp = chromeHiddenApp;
+exports.onInstallStateResponse = onInstallStateResponse;