Add browser_test for extension app API with missing schema

chrome/browser/extensions/stubs_apitest.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "url/gurl.h"
 
@@ skipping 11 matching lines @@
   ASSERT_TRUE(RunExtensionTest("stubs")) << message_;
 
   // Navigate to a simple http:// page, which should get the content script
   // injected and run the rest of the test.
   GURL url(embedded_test_server()->GetURL("/extensions/test_file.html"));
   ui_test_utils::NavigateToURL(browser(), url);
 
   ResultCatcher catcher;
   ASSERT_TRUE(catcher.GetNextResult());
 }
+
+// Tests that all API features that are available to a platform app actually
+// can be used in an app. For example, this test will fail if a developer adds
+// an API feature without providing a schema. http://crbug.com/369318
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, StubsApp) {
+  ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
+
+  ASSERT_TRUE(RunPlatformAppTest("stubs_app")) << message_;
+}