Added UI to enable debugging features on CrOS

chrome/chrome_tests.gypi

 # Copyright 2013 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': {
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
       'browser/extensions/browsertest_util.cc',
@@ skipping 116 matching lines @@
       'browser/chromeos/file_manager/file_manager_jstest.cc',
       'browser/chromeos/file_manager/zip_file_creator_browsertest.cc',
       'browser/chromeos/first_run/drive_first_run_browsertest.cc',
       'browser/chromeos/first_run/first_run_browsertest.cc',
       'browser/chromeos/input_method/input_method_engine_browsertests.cc',
       'browser/chromeos/input_method/mode_indicator_browsertest.cc',
       'browser/chromeos/kiosk_mode/mock_kiosk_mode_settings.cc',
       'browser/chromeos/kiosk_mode/mock_kiosk_mode_settings.h',
       'browser/chromeos/login/crash_restore_browsertest.cc',
       'browser/chromeos/login/demo_mode/demo_app_launcher_browsertest.cc',
+      'browser/chromeos/login/enable_debugging_browsertest.cc',
       'browser/chromeos/login/enrollment/enrollment_screen_browsertest.cc',
       'browser/chromeos/login/enrollment/mock_auto_enrollment_check_screen.cc',
       'browser/chromeos/login/enrollment/mock_auto_enrollment_check_screen.h',
       'browser/chromeos/login/enrollment/mock_enrollment_screen.cc',
       'browser/chromeos/login/enrollment/mock_enrollment_screen.h',
       'browser/chromeos/login/existing_user_controller_browsertest.cc',
       'browser/chromeos/login/kiosk_browsertest.cc',
       'browser/chromeos/login/lock/screen_locker_tester.cc',
       'browser/chromeos/login/lock/screen_locker_tester.h',
       'browser/chromeos/login/login_manager_test.cc',
       'browser/chromeos/login/login_manager_test.h',
       'browser/chromeos/login/login_screen_policy_browsertest.cc',
       'browser/chromeos/login/login_ui_keyboard_browsertest.cc',
       'browser/chromeos/login/login_utils_browsertest.cc',
       'browser/chromeos/login/mixin_based_browser_test.cc',
       'browser/chromeos/login/mixin_based_browser_test.h',
       'browser/chromeos/login/oobe_localization_browsertest.cc',
       'browser/chromeos/login/reset_browsertest.cc',
       # TODO(nkostylev) Re-enable ResourceLoaderBrowserTest.
       #'browser/chromeos/login/resource_loader_browsertest.cc',
       'browser/chromeos/login/saml/saml_browsertest.cc',
       'browser/chromeos/login/session_login_browsertest.cc',
       'browser/chromeos/login/screens/mock_base_screen_delegate.cc',
       'browser/chromeos/login/screens/mock_base_screen_delegate.h',
+      'browser/chromeos/login/screens/mock_enable_debugging_screen.cc',
+      'browser/chromeos/login/screens/mock_enable_debugging_screen.h',
       'browser/chromeos/login/screens/mock_error_screen.cc',
       'browser/chromeos/login/screens/mock_error_screen.h',
       'browser/chromeos/login/screens/mock_eula_screen.cc',
       'browser/chromeos/login/screens/mock_eula_screen.h',
       'browser/chromeos/login/screens/mock_network_screen.cc',
       'browser/chromeos/login/screens/mock_network_screen.h',
       'browser/chromeos/login/screens/mock_update_screen.cc',
       'browser/chromeos/login/screens/mock_update_screen.h',
       'browser/chromeos/login/screens/mock_wrong_hwid_screen.cc',
       'browser/chromeos/login/screens/mock_wrong_hwid_screen.h',
@@ skipping 3069 matching lines @@
             ['enable_webrtc==1', {
               'dependencies': [
                 '../third_party/libjingle/libjingle.gyp:libjingle_webrtc'
               ]
             }],
           ],
         }]
     }],
   ],  # 'conditions'
 }