Add a test for KeywordExtensionsDelegateImpl::IsEnabledExtension().

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 557 matching lines @@
         'browser/android/mock_google_location_settings_helper.cc',
         'browser/android/mock_google_location_settings_helper.h',
         'browser/app_controller_mac_unittest.mm',
         'browser/apps/drive/drive_app_mapping_unittest.cc',
         'browser/apps/ephemeral_app_service_unittest.cc',
         'browser/autocomplete/autocomplete_provider_unittest.cc',
         'browser/autocomplete/bookmark_provider_unittest.cc',
         'browser/autocomplete/builtin_provider_unittest.cc',
         'browser/autocomplete/history_quick_provider_unittest.cc',
         'browser/autocomplete/history_url_provider_unittest.cc',
+        'browser/autocomplete/keyword_extensions_delegate_impl_unittest.cc',
         'browser/autocomplete/search_provider_unittest.cc',
         'browser/autocomplete/shortcuts_backend_unittest.cc',
         'browser/autocomplete/shortcuts_provider_unittest.cc',
         'browser/autocomplete/zero_suggest_provider_unittest.cc',
         'browser/autofill/autofill_cc_infobar_delegate_unittest.cc',
         'browser/background/background_application_list_model_unittest.cc',
         'browser/background/background_contents_service_unittest.cc',
         'browser/background/background_mode_manager_unittest.cc',
         'browser/bitmap_fetcher/bitmap_fetcher_service_unittest.cc',
         'browser/bookmarks/bookmark_html_writer_unittest.cc',
@@ skipping 1496 matching lines @@
             ['exclude', '^common/extensions/api/'],
             ['exclude', '^common/extensions/manifest_handlers/'],
             ['exclude', '^common/extensions/manifest_tests/'],
             # This test depends on manifest_tests.
             ['exclude', '^common/extensions/permissions/settings_override_permission_unittest.cc'],
             ['exclude', '^utility/extensions/'],
             ['exclude', '^utility/image_writer/'],
             ['exclude', '^utility/media_galleries/'],
           ],
           'sources!': [
+            'browser/autocomplete/keyword_extensions_delegate_impl_unittest.cc',
             'browser/extensions/active_script_controller_unittest.cc',
             'browser/extensions/active_tab_unittest.cc',
             'browser/extensions/extension_context_menu_model_unittest.cc',
             'browser/extensions/extension_service_unittest.cc',
             'browser/extensions/extension_error_controller_unittest.cc',
             'browser/extensions/extension_ui_unittest.cc',
             'browser/extensions/extension_web_ui_unittest.cc',
             'browser/extensions/location_bar_controller_unittest.cc',
             'browser/extensions/menu_manager_unittest.cc',
             'browser/extensions/pack_extension_unittest.cc',
@@ skipping 760 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }