diff --git a/quiche/spdy/core/metadata_extension.h b/quiche/spdy/core/metadata_extension.h
index 6b171b5..a749904 100644
--- a/quiche/spdy/core/metadata_extension.h
+++ b/quiche/spdy/core/metadata_extension.h
@@ -109,6 +109,8 @@
   // which case returns nullptr.
   std::unique_ptr<spdy::SpdyFrameIR> Next();
 
+  SpdyStreamId stream_id() const { return stream_id_; }
+
  private:
   SpdyStreamId stream_id_;
   Http2HeaderBlock payload_;