Plumbs through delta_largest_observed from

net/quic/reliable_quic_stream.cc

Index: net/quic/reliable_quic_stream.cc
diff --git a/net/quic/reliable_quic_stream.cc b/net/quic/reliable_quic_stream.cc
index 36e87844e8dfd886091ee16f3adc64c20dddcab1..e61e5930b23f465a0da29722a077fe8b17d6479b 100644
--- a/net/quic/reliable_quic_stream.cc
+++ b/net/quic/reliable_quic_stream.cc
@@ -50,7 +50,9 @@ class ReliableQuicStream::ProxyAckNotifierDelegate
   virtual void OnAckNotification(int num_original_packets,
                                  int num_original_bytes,
                                  int num_retransmitted_packets,
-                                 int num_retransmitted_bytes) OVERRIDE {
+                                 int num_retransmitted_bytes,
+                                 QuicTime::Delta delta_largest_observed)
+      OVERRIDE {
     DCHECK_LT(0, pending_acks_);
     --pending_acks_;
     num_original_packets_ += num_original_packets;
@@ -62,7 +64,8 @@ class ReliableQuicStream::ProxyAckNotifierDelegate
       delegate_->OnAckNotification(num_original_packets_,
                                    num_original_bytes_,
                                    num_retransmitted_packets_,
-                                   num_retransmitted_bytes_);
+                                   num_retransmitted_bytes_,
+                                   delta_largest_observed);
     }
   }