[Extensions Bindings] Avoid passing the event filter to JS

chrome/test/data/extensions/api_test/bindings/event_filter/background.js

Index: chrome/test/data/extensions/api_test/bindings/event_filter/background.js
diff --git a/chrome/test/data/extensions/api_test/bindings/event_filter/background.js b/chrome/test/data/extensions/api_test/bindings/event_filter/background.js
new file mode 100644
index 0000000000000000000000000000000000000000..57b853918f678cddc7d2856c1572f6699a9bda4b
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/bindings/event_filter/background.js
@@ -0,0 +1,13 @@
+// Copyright 2017 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.
+
+// Make sure that putting interceptors on event filter attributes doesn't
+// break anything.
+Object.defineProperty(Object.prototype, 'windowExposedByDefault',
+                      {enumerable: true, get() { return 'hahaha'; }});
+chrome.webNavigation.onBeforeNavigate.addListener(function() {
+  chrome.test.notifyPass();
+}, {url: [{hostContains: 'example.com'}]});
+
+chrome.test.sendMessage('ready');