Register a Service Worker when an extension is enabled.

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 1242 matching lines @@
         'browser/extensions/lazy_background_page_apitest.cc',
         'browser/extensions/lazy_background_page_test_util.h',
         'browser/extensions/mutation_observers_apitest.cc',
         'browser/extensions/options_page_apitest.cc',
         'browser/extensions/page_action_browsertest.cc',
         'browser/extensions/plugin_apitest.cc',
         'browser/extensions/process_management_browsertest.cc',
         'browser/extensions/process_manager_browsertest.cc',
         'browser/extensions/requirements_checker_browsertest.cc',
         'browser/extensions/sandboxed_pages_apitest.cc',
+        'browser/extensions/service_worker_browsertest.cc',
         'browser/extensions/shared_module_apitest.cc',
         'browser/extensions/startup_helper_browsertest.cc',
         'browser/extensions/stubs_apitest.cc',
         'browser/extensions/subscribe_page_action_browsertest.cc',
         'browser/extensions/test_extension_dir.cc',
         'browser/extensions/test_extension_dir.h',
         'browser/extensions/updater/extension_cache_fake.h',
         'browser/extensions/updater/extension_cache_fake.cc',
         'browser/extensions/web_contents_browsertest.cc',
         'browser/extensions/webstore_inline_installer_browsertest.cc',
@@ skipping 1961 matching lines @@
             'utility',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
           ],
         }]
     }],
   ],  # 'conditions'
 }