QUIC-local change to extend per-connection stats. Extending

net/quic/congestion_control/send_algorithm_interface.cc

Index: net/quic/congestion_control/send_algorithm_interface.cc
diff --git a/net/quic/congestion_control/send_algorithm_interface.cc b/net/quic/congestion_control/send_algorithm_interface.cc
index e3452c476597e018cf1bb848ca6474e20c14506b..c884c028dc8bc2e0fdb662d4a3223409ed3bb6e3 100644
--- a/net/quic/congestion_control/send_algorithm_interface.cc
+++ b/net/quic/congestion_control/send_algorithm_interface.cc
@@ -16,10 +16,12 @@ const bool kUseReno = false;
 // Factory for send side congestion control algorithm.
 SendAlgorithmInterface* SendAlgorithmInterface::Create(
     const QuicClock* clock,
-    CongestionFeedbackType type) {
+    CongestionFeedbackType type,
+    QuicConnectionStats* stats) {
   switch (type) {
     case kTCP:
-      return new TcpCubicSender(clock, kUseReno, kMaxTcpCongestionWindow);
+      return new TcpCubicSender(clock, kUseReno, kMaxTcpCongestionWindow,
+                                stats);
     case kInterArrival:
       return new InterArrivalSender(clock);
     case kFixRate: