relnote: Fixes bug in QUIC's cubic code that caused inflation in

net/quic/congestion_control/cubic.h

Index: net/quic/congestion_control/cubic.h
diff --git a/net/quic/congestion_control/cubic.h b/net/quic/congestion_control/cubic.h
index c0adad4431e74c6b375959b909979533a7cb5e68..effa736264e0a4fe7c47fcbbbd73fb26051b364b 100644
--- a/net/quic/congestion_control/cubic.h
+++ b/net/quic/congestion_control/cubic.h
@@ -38,6 +38,10 @@ class NET_EXPORT_PRIVATE Cubic {
   QuicPacketCount CongestionWindowAfterAck(QuicPacketCount current,
                                            QuicTime::Delta delay_min);
 
+  // Call on ack arrival when sender is unable to use the available congestion
+  // window. Resets Cubic state during quiescence.
+  void OnApplicationLimited();
+
  private:
   static const QuicTime::Delta MaxCubicTimeInterval() {
     return QuicTime::Delta::FromMilliseconds(30);