Replace QuicAckListenerInterface* with scoped_refptr<QuicAckListenerInterface>.

net/quic/core/quic_packet_generator.h

Index: net/quic/core/quic_packet_generator.h
diff --git a/net/quic/core/quic_packet_generator.h b/net/quic/core/quic_packet_generator.h
index 094731eb7f56af3880a82273f9b01f78a288e476..be0215a776a3a33951986bbbd100d9f5cda9087b 100644
--- a/net/quic/core/quic_packet_generator.h
+++ b/net/quic/core/quic_packet_generator.h
@@ -93,24 +93,27 @@ class QUIC_EXPORT_PRIVATE QuicPacketGenerator {
   // mode, these packets will also be sent during this call.
   // |delegate| (if not nullptr) will be informed once all packets sent as a
   // result of this call are ACKed by the peer.
-  QuicConsumedData ConsumeData(QuicStreamId id,
-                               QuicIOVector iov,
-                               QuicStreamOffset offset,
-                               bool fin,
-                               QuicAckListenerInterface* listener);
+  QuicConsumedData ConsumeData(
+      QuicStreamId id,
+      QuicIOVector iov,
+      QuicStreamOffset offset,
+      bool fin,
+      const scoped_refptr<QuicAckListenerInterface>& listener);
 
   // Sends as many data only packets as allowed by the send algorithm and the
   // available iov.
   // This path does not support FEC, padding, or bundling pending frames.
-  QuicConsumedData ConsumeDataFastPath(QuicStreamId id,
-                                       const QuicIOVector& iov,
-                                       QuicStreamOffset offset,
-                                       bool fin,
-                                       QuicAckListenerInterface* listener);
+  QuicConsumedData ConsumeDataFastPath(
+      QuicStreamId id,
+      const QuicIOVector& iov,
+      QuicStreamOffset offset,
+      bool fin,
+      const scoped_refptr<QuicAckListenerInterface>& listener);
 
   // Generates an MTU discovery packet of specified size.
-  void GenerateMtuDiscoveryPacket(QuicByteCount target_mtu,
-                                  QuicAckListenerInterface* listener);
+  void GenerateMtuDiscoveryPacket(
+      QuicByteCount target_mtu,
+      const scoped_refptr<QuicAckListenerInterface>& listener);
 
   // Indicates whether batch mode is currently enabled.
   bool InBatchMode();