Lazily load extension API schemas

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 GetExtensionAPIDefinition =
-    requireNative('apiDefinitions').GetExtensionAPIDefinition;
+var GetExtensionAPIDefinitions =
+    requireNative('apiDefinitions').GetExtensionAPIDefinitions;
+var GetAvailability = requireNative('v8_context').GetAvailability;
 
 binding.registerCustomHook(function(api) {
   var chromeTest = api.compiledApi;
   var apiFunctions = api.apiFunctions;
 
   chromeTest.tests = chromeTest.tests || [];
 
   var currentTest = null;
   var lastTest = null;
   var testsFailed = 0;
@@ skipping 253 matching lines @@
   apiFunctions.setHandleRequest('callbackFail', function(expectedError, func) {
     return chromeTest.callback(func, expectedError);
   });
 
   apiFunctions.setHandleRequest('runTests', function(tests) {
     chromeTest.tests = tests;
     testCount = chromeTest.tests.length;
     chromeTest.runNextTest();
   });
 
-  apiFunctions.setHandleRequest('getApiDefinitions', function(apiNames) {
-    return GetExtensionAPIDefinition();
+  apiFunctions.setHandleRequest('getApiDefinitions', function() {
+    return GetExtensionAPIDefinitions().filter(function(api) {
+      return GetAvailability(api.namespace).is_available;
+    });
   });
 });
 
 exports.binding = binding.generate();