scoped_extension_registry_observer_   79 chrome/browser/extensions/api/media_galleries_private/gallery_watch_state_tracker.cc   scoped_extension_registry_observer_.Add(ExtensionRegistry::Get(profile_));
scoped_extension_registry_observer_  138 chrome/browser/extensions/api/media_galleries_private/gallery_watch_state_tracker.h                  ExtensionRegistryObserver> scoped_extension_registry_observer_;