Add debugging logs for static stream QUIC bug.

gfe-relnote: no behavior change, not protected.
PiperOrigin-RevId: 292997760
Change-Id: Ia0a1921521b9cd208ee4691eb5aa27ccc8b62309

quic/core/http/quic_spdy_session.cc

diff --git a/quic/core/http/quic_spdy_session.cc b/quic/core/http/quic_spdy_session.cc
index dd73b93..25b1b0a 100644
--- a/quic/core/http/quic_spdy_session.cc
+++ b/quic/core/http/quic_spdy_session.cc
@@ -694,7 +694,9 @@
     const QuicStreamId stream_id) {
   QuicStream* stream = GetOrCreateStream(stream_id);
   if (stream && stream->is_static()) {
-    QUIC_BUG << "GetOrCreateSpdyDataStream returns static stream " << stream_id;
+    QUIC_BUG << "GetOrCreateSpdyDataStream returns static stream " << stream_id
+             << " in version " << transport_version() << "\n"
+             << QuicStackTrace();
     connection()->CloseConnection(
         QUIC_INVALID_STREAM_ID,
         quiche::QuicheStrCat("stream ", stream_id, " is static"),