[Extensions] Update web API cloberring for platform apps

chrome/browser/extensions/app_window_overrides_browsertest.cc

+// Copyright 2016 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_browsertest.h"
+#include "extensions/test/result_catcher.h"
+
+namespace extensions {
+
+using AppWindowRestrictedApisBrowserTest = ExtensionBrowserTest;
+
+// Test that the window events like onbeforeunload event are correctly
+// clobbered.
+IN_PROC_BROWSER_TEST_F(AppWindowRestrictedApisBrowserTest, UnloadEvents) {
+  ResultCatcher catcher;
+  ASSERT_TRUE(LoadExtension(
+      test_data_dir_.AppendASCII("app_forbidden_apis/onbeforeunload")));
+  ASSERT_TRUE(catcher.GetNextResult());
+}
+
+// Test that Document apis like document.write are correctly clobbered.
+IN_PROC_BROWSER_TEST_F(AppWindowRestrictedApisBrowserTest, DocumentApis) {
+  ResultCatcher catcher;
+  ASSERT_TRUE(LoadExtension(
+      test_data_dir_.AppendASCII("app_forbidden_apis/document_apis")));
+  ASSERT_TRUE(catcher.GetNextResult());
+}
+
+}  // namespace extensions