Convert chrome://policy to new WebUI style

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' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 1347 matching lines @@
         'browser/ui/webui/options/language_options_browsertest.js',
         'browser/ui/webui/options/language_options_dictionary_download_browsertest.js',
         'browser/ui/webui/options/options_browsertest.js',
         'browser/ui/webui/options/options_ui_browsertest.cc',
         'browser/ui/webui/options/options_ui_browsertest.h',
         'browser/ui/webui/options/password_manager_browsertest.js',
         'browser/ui/webui/options/preferences_browsertest.cc',
         'browser/ui/webui/options/preferences_browsertest.h',
         'browser/ui/webui/options/search_engine_manager_browsertest.js',
         'browser/ui/webui/options/settings_format_browsertest.js',
+        'browser/ui/webui/policy_ui_browsertest.cc',
         'browser/ui/webui/print_preview/print_preview_ui_browsertest.cc',
         'browser/ui/webui/sync_setup_browsertest.js',
         'browser/ui/webui/web_ui_test_handler.cc',
         'browser/ui/webui/web_ui_test_handler.h',
         'browser/unload_browsertest.cc',
         'common/mac/mock_launchd.cc',
         'common/mac/mock_launchd.h',
         'common/time_format_browsertest.cc',
         'renderer/autofill/autofill_renderer_browsertest.cc',
         'renderer/autofill/form_autocomplete_browsertest.cc',
@@ skipping 172 matching lines @@
         }],
         ['file_manager_extension==0', {
           'sources!': [
             'browser/ui/views/select_file_dialog_extension_browsertest.cc',
           ],
         }],
         ['configuration_policy==0', {
           'sources/': [
             ['exclude', '^browser/policy/'],
           ],
+          'sources!': [
+            'browser/ui/webui/policy_ui_browsertest.cc',
+          ],
         }],
         ['input_speech==0', {
           'sources/': [
             ['exclude', '^browser/speech/'],
             ['exclude', '^../content/browser/speech/'],
           ],
         }],
         ['safe_browsing==1', {
           'defines': [
             'FULL_SAFE_BROWSING',
@@ skipping 1439 matching lines @@
             'sync_integration_tests.isolate',
           ],
           'sources': [
             'sync_integration_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }