[CacheStorage] Keep caches alive for 30 seconds after opening

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 348 matching lines @@
       'browser/background_sync/background_sync_service_impl_unittest.cc',
       'browser/blob_storage/blob_storage_registry_unittest.cc',
       'browser/browser_io_surface_manager_mac_unittest.cc',
       'browser/browser_thread_unittest.cc',
       'browser/browser_url_handler_impl_unittest.cc',
       'browser/byte_stream_unittest.cc',
       'browser/cache_storage/cache_storage_blob_to_disk_cache_unittest.cc',
       'browser/cache_storage/cache_storage_cache_unittest.cc',
       'browser/cache_storage/cache_storage_manager_unittest.cc',
       'browser/cache_storage/cache_storage_scheduler_unittest.cc',
+      'browser/cache_storage/cache_storage_unittest.cc',
       'browser/child_process_security_policy_unittest.cc',
       'browser/cocoa/system_hotkey_map_unittest.mm',
       'browser/compositor/buffer_queue_unittest.cc',
       'browser/compositor/reflector_impl_unittest.cc',
       'browser/compositor/software_browser_compositor_output_surface_unittest.cc',
       'browser/compositor/software_output_device_ozone_unittest.cc',
       'browser/database_quota_client_unittest.cc',
       'browser/database_tracker_unittest.cc',
       'browser/database_util_unittest.cc',
       'browser/databases_table_unittest.cc',
@@ skipping 1815 matching lines @@
                   'content_unittests_apk.isolate',
                 ],
               },
             ],
           },
         ],
       ],
     }],
   ],
 }