Lazy load chrome.* APIs

chrome/renderer/resources/extensions/storage_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 storage API.
+// Custom binding for the storage API.
 
-var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+var binding = require('binding').Binding.create('storage');
+
 var normalizeArgumentsAndValidate =
     require('schemaUtils').normalizeArgumentsAndValidate
 var sendRequest = require('sendRequest').sendRequest;
 
-chromeHidden.registerCustomType('storage.StorageArea', function() {
+binding.registerCustomType('storage.StorageArea', function() {
   function extendSchema(schema) {
     var extendedSchema = schema.slice();
     extendedSchema.unshift({'type': 'string'});
     return extendedSchema;
   }
 
   function StorageArea(namespace, schema) {
     // Binds an API function for a namespace to its browser-side call, e.g.
     // storage.sync.get('foo') -> (binds to) ->
     // storage.get('sync', 'foo').
     //
-    // TODO(kalman): Put as a method on CustomBindingsObject and re-use (or
+    // TODO(kalman): Put as a method on CustombindingObject and re-use (or
     // even generate) for other APIs that need to do this. Same for other
     // callers of registerCustomType().
     var self = this;
     function bindApiFunction(functionName) {
       self[functionName] = function() {
         var funSchema = this.functionSchemas[functionName];
         var args = Array.prototype.slice.call(arguments);
         args = normalizeArgumentsAndValidate(args, funSchema);
         return sendRequest(
             'storage.' + functionName,
             [namespace].concat(args),
             extendSchema(funSchema.definition.parameters),
             {preserveNullInObjects: true});
       };
     }
     var apiFunctions = ['get', 'set', 'remove', 'clear', 'getBytesInUse'];
     apiFunctions.forEach(bindApiFunction);
   }
 
   return StorageArea;
 });
+
+exports.binding = binding.generate();