Lazy load chrome.* APIs

chrome/renderer/resources/extensions/sync_file_system_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 syncFileSystem API.
+// Custom binding for the syncFileSystem API.
+
+var binding = require('binding').Binding.create('syncFileSystem');
 
 var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
 var fileSystemNatives = requireNative('file_system_natives');
 var syncFileSystemNatives = requireNative('sync_file_system');
 
-chromeHidden.registerCustomHook('syncFileSystem', function(bindingsAPI) {
+binding.registerCustomHook(function(bindingsAPI) {
   var apiFunctions = bindingsAPI.apiFunctions;
 
   // Functions which take in an [instanceOf=FileEntry].
   function bindFileEntryFunction(functionName) {
     apiFunctions.setUpdateArgumentsPostValidate(
         functionName, function(entry, callback) {
       var fileSystemUrl = entry.toURL();
       return [fileSystemUrl, callback];
     });
   }
@@ skipping 38 matching lines @@
   // Combine into a single dictionary.
   var fileInfo = new Object();
   fileInfo.fileEntry = fileEntry;
   fileInfo.status = args[4];
   if (fileInfo.status == "synced") {
     fileInfo.action = args[5];
     fileInfo.direction = args[6];
   }
   dispatch([fileInfo]);
 });
+
+exports.binding = binding.generate();