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

chrome/renderer/resources/extensions/test_custom_bindings.js

Index: chrome/renderer/resources/extensions/test_custom_bindings.js
diff --git a/chrome/renderer/resources/extensions/test_custom_bindings.js b/chrome/renderer/resources/extensions/test_custom_bindings.js
index d46d5ebfe543813c84c57f0e5a7700c740f7d0ab..9a52f8a491b4b8175592e3c036be08cf6f438bc6 100644
--- a/chrome/renderer/resources/extensions/test_custom_bindings.js
+++ b/chrome/renderer/resources/extensions/test_custom_bindings.js
@@ -11,6 +11,7 @@ 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) {
@@ -290,6 +291,10 @@ binding.registerCustomHook(function(api) {
       return GetAvailability(api.namespace).is_available;
     });
   });
+
+  apiFunctions.setHandleRequest('getApiFeatures', function() {
+    return GetAPIFeatures();
+  });
 });
 
 exports.binding = binding.generate();