Merge "More plumbing for fallback configs"

quic/core/quic_connection.cc

diff --git a/quic/core/quic_connection.cc b/quic/core/quic_connection.cc
index 2c7df67..24cbb6d 100644
--- a/quic/core/quic_connection.cc
+++ b/quic/core/quic_connection.cc
@@ -201,7 +201,11 @@
   ProcessUndecryptablePacketsAlarmDelegate& operator=(
       const ProcessUndecryptablePacketsAlarmDelegate&) = delete;
 
-  void OnAlarm() override { connection_->MaybeProcessUndecryptablePackets(); }
+  void OnAlarm() override {
+    QuicConnection::ScopedPacketFlusher flusher(connection_,
+                                                QuicConnection::NO_ACK);
+    connection_->MaybeProcessUndecryptablePackets();
+  }
 
  private:
   QuicConnection* connection_;