Land Recent QUIC Changes.

net/quic/congestion_control/send_algorithm_interface.h

Index: net/quic/congestion_control/send_algorithm_interface.h
diff --git a/net/quic/congestion_control/send_algorithm_interface.h b/net/quic/congestion_control/send_algorithm_interface.h
index 9173afe4a73906aaac2f1d5790f07cced8775ef5..5d1f6df3532f3398ff6ab08ee07f33b1315926e8 100644
--- a/net/quic/congestion_control/send_algorithm_interface.h
+++ b/net/quic/congestion_control/send_algorithm_interface.h
@@ -97,6 +97,9 @@ class NET_EXPORT_PRIVATE SendAlgorithmInterface {
   // BandwidthEstimate is expected to be too low.
   virtual bool InSlowStart() const = 0;
 
+  // Whether the send algorithm is currently in recovery.
+  virtual bool InRecovery() const = 0;
+
   // Returns the size of the slow start congestion window in bytes,
   // aka ssthresh.  Some send algorithms do not define a slow start
   // threshold and will return 0.