[Extensions Bindings] Allow schema violations through sendRequest

extensions/renderer/resources/context_menus_custom_bindings.js

 // Copyright 2014 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 contextMenus API.
 
-var binding = require('binding').Binding.create('contextMenus');
+var binding = apiBridge || require('binding').Binding.create('contextMenus');
 var contextMenusHandlers = require('contextMenusHandlers');
 
 binding.registerCustomHook(function(bindingsAPI) {
   var apiFunctions = bindingsAPI.apiFunctions;
 
   var handlers = contextMenusHandlers.create(false /* isWebview */);
 
   apiFunctions.setHandleRequest('create', handlers.requestHandlers.create);
 
   apiFunctions.setHandleRequest('remove', handlers.requestHandlers.remove);
 
   apiFunctions.setHandleRequest('update', handlers.requestHandlers.update);
 
   apiFunctions.setHandleRequest('removeAll',
                                 handlers.requestHandlers.removeAll);
 });
 
-exports.$set('binding', binding.generate());
+if (!apiBridge)
+  exports.$set('binding', binding.generate());