Update from https://crrev.com/312398

net/quic/quic_received_packet_manager.h

Index: net/quic/quic_received_packet_manager.h
diff --git a/net/quic/quic_received_packet_manager.h b/net/quic/quic_received_packet_manager.h
index 7e1c88f2068347d42584eeb507bdfe98d810e540..94bd3d5fc97dd960c9f9ded7e2d62274bc38a4ec 100644
--- a/net/quic/quic_received_packet_manager.h
+++ b/net/quic/quic_received_packet_manager.h
@@ -120,13 +120,6 @@ class NET_EXPORT_PRIVATE QuicReceivedPacketManager :
   void UpdateReceivedPacketInfo(QuicAckFrame* ack_frame,
                                 QuicTime approximate_now);
 
-  // Should be called before sending an ACK packet, to decide if we need
-  // to attach a QuicCongestionFeedbackFrame block.
-  // Returns false if no QuicCongestionFeedbackFrame block is needed.
-  // Otherwise fills in feedback and returns true.
-  virtual bool GenerateCongestionFeedback(
-      QuicCongestionFeedbackFrame* feedback);
-
   // QuicReceivedEntropyHashCalculatorInterface
   // Called by QuicFramer, when the outgoing ack gets truncated, to recalculate
   // the received entropy hash for the truncated ack frame.