GetKnownExtensionIDs  145 chrome/browser/extensions/api/storage/sync_storage_backend.cc   std::set<std::string> known_extension_ids(GetKnownExtensionIDs());
GetKnownExtensionIDs   75 chrome/browser/extensions/api/storage/sync_storage_backend.h   std::set<std::string> GetKnownExtensionIDs() const;