Add the definition of the webRequest and webNavigation APIs.

chrome/browser/extensions/extension_webnavigation_apitest.cc

Index: chrome/browser/extensions/extension_webnavigation_apitest.cc
diff --git a/chrome/browser/extensions/extension_webnavigation_apitest.cc b/chrome/browser/extensions/extension_webnavigation_apitest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b0ccd7710d4b31cfa45a42689f7f0d85d0ab5fee
--- /dev/null
+++ b/chrome/browser/extensions/extension_webnavigation_apitest.cc
@@ -0,0 +1,14 @@
+// Copyright (c) 2010 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 "base/command_line.h"
+#include "chrome/browser/extensions/extension_apitest.h"
+#include "chrome/common/chrome_switches.h"
+
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, WebNavigation) {
+  CommandLine::ForCurrentProcess()->AppendSwitch(
+      switches::kEnableExperimentalExtensionApis);
+
+  ASSERT_TRUE(RunExtensionTest("webnavigation/api")) << message_;
+}