Don't allow updating tabs to javascript URLs without host

chrome/browser/extensions/extension_javascript_url_apitest.cc

Index: chrome/browser/extensions/extension_javascript_url_apitest.cc
diff --git a/chrome/browser/extensions/extension_javascript_url_apitest.cc b/chrome/browser/extensions/extension_javascript_url_apitest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..87e478917c20c08b341fa55ad2ba84ee5f67e538
--- /dev/null
+++ b/chrome/browser/extensions/extension_javascript_url_apitest.cc
@@ -0,0 +1,13 @@
+// Copyright (c) 2009 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"
+
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, JavaScriptURLPermissions) {
+  host_resolver()->AddRule("a.com", "127.0.0.1");
+  host_resolver()->AddRule("b.com", "127.0.0.1");
+  StartHTTPServer();
+
+  ASSERT_TRUE(RunExtensionTest("javascript_url_permissions")) << message_;
+}