Expose packet loss counts from QUIC to NetworkQualityEstimator

net/base/socket_performance_watcher.cc

Index: net/base/socket_performance_watcher.cc
diff --git a/net/base/socket_performance_watcher.cc b/net/base/socket_performance_watcher.cc
index aa0dab3b03c9476a8d099bde13e15e9b65668850..39208f01463a45da49aaf8c9cddb791cf38a11ba 100644
--- a/net/base/socket_performance_watcher.cc
+++ b/net/base/socket_performance_watcher.cc
@@ -31,4 +31,13 @@ void SocketPerformanceWatcher::OnUpdatedRTTAvailable(
   socket_performance_watcher_factory_->OnUpdatedRTTAvailable(protocol_, rtt);
 }
 
+void SocketPerformanceWatcher::OnUpdatedPacketCountAvailable(
+    size_t packets_missing,
+    size_t packets_received_in_order,
+    size_t packets_received_out_of_order) const {
+  socket_performance_watcher_factory_->OnUpdatedPacketCountAvailable(
+      protocol_, packets_missing, packets_received_in_order,
+      packets_received_out_of_order);
+}
+
 }  // namespace net