Allow API functions and events to have entries in _api_features.json

chrome/renderer/resources/extensions/test_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.
 
 // test_custom_bindings.js
 // mini-framework for ExtensionApiTest browser tests
 
 var binding = require('binding').Binding.create('test');
 
 var chrome = requireNative('chrome').GetChrome();
 var GetExtensionAPIDefinitions =
     requireNative('apiDefinitions').GetExtensionAPIDefinitions;
 var GetAvailability = requireNative('v8_context').GetAvailability;
+var GetAPIFeatures = requireNative('test_features').GetAPIFeatures;
 var json = require('json');
 
 binding.registerCustomHook(function(api) {
   var chromeTest = api.compiledApi;
   var apiFunctions = api.apiFunctions;
 
   chromeTest.tests = chromeTest.tests || [];
 
   var currentTest = null;
   var lastTest = null;
@@ skipping 259 matching lines @@
     chromeTest.tests = tests;
     testCount = chromeTest.tests.length;
     chromeTest.runNextTest();
   });
 
   apiFunctions.setHandleRequest('getApiDefinitions', function() {
     return GetExtensionAPIDefinitions().filter(function(api) {
       return GetAvailability(api.namespace).is_available;
     });
   });
+
+  apiFunctions.setHandleRequest('getApiFeatures', function() {
+    return GetAPIFeatures();
+  });
 });
 
 exports.binding = binding.generate();