Make miscellaneous_bindings and event_bindings Required as needed. Previously

chrome/renderer/resources/extensions/file_browser_handler_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 fileBrowserHandler API.
 
 var binding = require('binding').Binding.create('fileBrowserHandler');
 
+var eventBindings = require('event_bindings');
 var fileBrowserNatives = requireNative('file_browser_handler');
 var GetExternalFileEntry = fileBrowserNatives.GetExternalFileEntry;
-
-var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
 var fileBrowserHandlerInternal = require('binding').Binding.create(
     'fileBrowserHandlerInternal').generate();
 
-chromeHidden.Event.registerArgumentMassager('fileBrowserHandler.onExecute',
+eventBindings.registerArgumentMassager('fileBrowserHandler.onExecute',
     function(args, dispatch) {
   if (args.length < 2) {
     dispatch(args);
     return;
   }
   var fileList = args[1].entries;
   if (!fileList) {
     dispatch(args);
     return;
   }
@@ skipping 22 matching lines @@
 
       externalCallback(result);
     }
 
     return fileBrowserHandlerInternal.selectFile(
         selectionParams, internalCallback.bind(null, callback));
   });
 });
 
 exports.binding = binding.generate();