477       sync_messages_.emplace(id, std::move(message));  in EnqueueSyncMessage()
491       if (sync_messages_.empty() || sync_messages_.front().first != id)  in PopSyncMessage()
493       MessageWrapper message = std::move(sync_messages_.front().second);  in PopSyncMessage()
494       sync_messages_.pop();  in PopSyncMessage()
543       if (!sync_messages_.empty()) {  in OnSyncMessageEventReady()
545             std::move(sync_messages_.front().second);  in OnSyncMessageEventReady()
546         sync_messages_.pop();  in OnSyncMessageEventReady()
556         if (!sync_messages_.empty())  in OnSyncMessageEventReady()
583       if (peer_closed_ || !sync_messages_.empty())  in EnsureSyncWatcherExists()
590       DCHECK(sync_messages_.empty() || sync_messages_.front().first != id);  in GenerateSyncMessageId()
604     base::queue<std::pair<uint32_t, MessageWrapper>> sync_messages_;  member in IPC::__anonf422a6c80111::ChannelAssociatedGroupController::Endpoint