Support automatic javascript test registry in gtest when creating WebUI tests.

chrome/test/data/webui/sample_passing.js

Index: chrome/test/data/webui/sample_passing.js
diff --git a/chrome/test/data/webui/sample_passing.js b/chrome/test/data/webui/sample_passing.js
new file mode 100644
index 0000000000000000000000000000000000000000..bb1dfe754c2e224c31bd49b529789e7a6575de33
--- /dev/null
+++ b/chrome/test/data/webui/sample_passing.js
@@ -0,0 +1,13 @@
+// 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.
+
+// Sample tests that exercise the test JS library and show how this framework
+// could be used to test the downloads page.
+function testAssertFalse() {
+  assertFalse(false);
+}
+
+function testInitialFocus() {
+  assertTrue(document.activeElement.id == 'term', '');
+}