Update from https://crrev.com/306655

net/quic/congestion_control/send_algorithm_interface.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // The pure virtual class for send side congestion control algorithm.
 
 #ifndef NET_QUIC_CONGESTION_CONTROL_SEND_ALGORITHM_INTERFACE_H_
 #define NET_QUIC_CONGESTION_CONTROL_SEND_ALGORITHM_INTERFACE_H_
 
 #include <algorithm>
@@ skipping 98 matching lines @@
   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.
   virtual QuicByteCount GetSlowStartThreshold() const = 0;
 
   virtual CongestionControlType GetCongestionControlType() const = 0;
 
   // Called by the Session when we get a bandwidth estimate from the client.
-  virtual void ResumeConnectionState(
+  // Returns true if initial connection state is changed as a result.
+  virtual bool ResumeConnectionState(
       const CachedNetworkParameters& cached_network_params) = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CONGESTION_CONTROL_SEND_ALGORITHM_INTERFACE_H_