Delete old chromedriver code, and remove mongoose webserver.

chrome/test/webdriver/test/infobar_browser_action_extension/bg.js

Index: chrome/test/webdriver/test/infobar_browser_action_extension/bg.js
diff --git a/chrome/test/webdriver/test/infobar_browser_action_extension/bg.js b/chrome/test/webdriver/test/infobar_browser_action_extension/bg.js
deleted file mode 100644
index 5d29b54e45d8190f1d50010b597b236ecaf81418..0000000000000000000000000000000000000000
--- a/chrome/test/webdriver/test/infobar_browser_action_extension/bg.js
+++ /dev/null
@@ -1,20 +0,0 @@
-// 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.
-
-var g_infobarReady = false;
-var g_callback = null;
-function waitForInfobar(callback) {
-  if (g_infobarReady)
-    callback();
-  g_callback = callback;
-}
-
-chrome.tabs.getSelected(null, function(tab) {
-  chrome.infobars.show(
-      {'tabId': tab.id, 'path': 'view_checks.html'}, function() {
-    g_infobarReady = true;
-    if (g_callback)
-      g_callback();
-  });
-});