Merge "libbinder: RPC save notify on transferring thread"

        LOG_ALWAYS_FATAL_IF(threadId == server->mConnectingThreads.end(),

                            "Must establish connection on owned thread");

        thisThread = std::move(threadId->second);

        ScopeGuard detachGuard = [&]() { thisThread.detach(); };

        server->mConnectingThreads.erase(threadId);

        // TODO(b/185167543): we currently can't disable this because we don't

        // shutdown sessions as well, only the server itself. So, we need to

        // keep this separate from the detachGuard, since we temporarily want to

        // give a notification even when we pass ownership of the thread to

        // a session.

        ScopeGuard threadLifetimeGuard = [&]() {

        ScopeGuard detachGuard = [&]() {

            thisThread.detach();

            _l.unlock();

            server->mShutdownCv.notify_all();

        };

        server->mConnectingThreads.erase(threadId);

        if (!idValid) {

            return;