Delete old chromedriver code, and remove mongoose webserver.

chrome/test/webdriver/webdriver_switches.cc

Index: chrome/test/webdriver/webdriver_switches.cc
diff --git a/chrome/test/webdriver/webdriver_switches.cc b/chrome/test/webdriver/webdriver_switches.cc
deleted file mode 100644
index 3e4427719ff45aee20bf82d6a051a2fb96cf112e..0000000000000000000000000000000000000000
--- a/chrome/test/webdriver/webdriver_switches.cc
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright (c) 2012 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/test/webdriver/webdriver_switches.h"
-
-namespace webdriver {
-
-// Instructs the mongoose webserver to enable HTTP persistent
-// connections.
-const char kEnableKeepAlive[] = "enable-keep-alive";
-
-}  // namespace webdriver