diff --git a/quiche/quic/core/quic_stream.h b/quiche/quic/core/quic_stream.h
index 4a7b738..0636b54 100644
--- a/quiche/quic/core/quic_stream.h
+++ b/quiche/quic/core/quic_stream.h
@@ -293,6 +293,9 @@
   QuicStreamOffset NumBytesConsumed() const {
     return sequencer()->NumBytesConsumed();
   }
+  QuicStreamOffset send_window_offset() const {
+    return flow_controller_->send_window_offset();
+  }
 
   // Called when endpoint receives a frame which could increase the highest
   // offset.