Fix ChromeDriver flakiness with the C# webdriver bindings.

chrome/chrome_tests.gypi

 # 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 788 matching lines @@
         'test/webdriver/webdriver_error.cc',
         'test/webdriver/webdriver_error.h',
         'test/webdriver/webdriver_key_converter.cc',
         'test/webdriver/webdriver_key_converter.h',
         'test/webdriver/webdriver_logging.cc',
         'test/webdriver/webdriver_logging.h',
         'test/webdriver/webdriver_session.cc',
         'test/webdriver/webdriver_session.h',
         'test/webdriver/webdriver_session_manager.cc',
         'test/webdriver/webdriver_session_manager.h',
+        'test/webdriver/webdriver_switches.cc',
+        'test/webdriver/webdriver_switches.h',
         'test/webdriver/webdriver_util.cc',
         'test/webdriver/webdriver_util.h',
         'test/webdriver/webdriver_util_mac.mm',
       ],
       'conditions': [
         ['toolkit_uses_gtk == 1', {
           'dependencies': [
             '../build/linux/system.gyp:gtk',
             '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
           ],
@@ skipping 3862 matching lines @@
                 '--result', '<@(_outputs)',
                 '--isolate', 'browser_tests.isolate',
               ],
             },
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }