Not used in production. Add InRecovery() method to QUIC send algorithm

net/quic/congestion_control/pacing_sender.cc

Index: net/quic/congestion_control/pacing_sender.cc
diff --git a/net/quic/congestion_control/pacing_sender.cc b/net/quic/congestion_control/pacing_sender.cc
index a1008399862ec756d528e82201b9b68dd4a3342c..cc4f983a809a55ebdc355e88faa96330b582dd27 100644
--- a/net/quic/congestion_control/pacing_sender.cc
+++ b/net/quic/congestion_control/pacing_sender.cc
@@ -170,6 +170,10 @@ bool PacingSender::InSlowStart() const {
   return sender_->InSlowStart();
 }
 
+bool PacingSender::InRecovery() const {
+  return sender_->InRecovery();
+}
+
 QuicByteCount PacingSender::GetSlowStartThreshold() const {
   return sender_->GetSlowStartThreshold();
 }