Fetch notification action icons and pass them through in resources.

content/content_tests.gypi

 # Copyright (c) 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': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 617 matching lines @@
       'child/blob_storage/blob_transport_controller_unittest.cc',
       'child/dwrite_font_proxy/dwrite_font_proxy_win_unittest.cc',
       'child/fileapi/webfilewriter_base_unittest.cc',
       'child/font_warmup_win_unittest.cc',
       'child/indexed_db/indexed_db_dispatcher_unittest.cc',
       'child/indexed_db/mock_webidbcallbacks.cc',
       'child/indexed_db/mock_webidbcallbacks.h',
       'child/indexed_db/webidbcursor_impl_unittest.cc',
       'child/multipart_response_delegate_unittest.cc',
       'child/notifications/notification_data_conversions_unittest.cc',
+      'child/notifications/pending_notifications_tracker_unittest.cc',
       'child/power_monitor_broadcast_source_unittest.cc',
       'child/resource_dispatcher_unittest.cc',
       'child/service_worker/service_worker_dispatcher_unittest.cc',
       'child/shared_memory_data_consumer_handle_unittest.cc',
       'child/shared_memory_received_data_factory_unittest.cc',
       'child/simple_webmimeregistry_impl_unittest.cc',
       'child/site_isolation_stats_gatherer_unittest.cc',
       'child/v8_value_converter_impl_unittest.cc',
       'child/web_data_consumer_handle_impl_unittest.cc',
       'child/web_process_memory_dump_impl_unittest.cc',
@@ skipping 1584 matching lines @@
                   'content_unittests_apk.isolate',
                 ],
               },
             ],
           },
         ],
       ],
     }],
   ],
 }