When a stream is created for a QUIC session to a server which has been

net/quic/chromium/quic_stream_factory.h

Index: net/quic/chromium/quic_stream_factory.h
diff --git a/net/quic/chromium/quic_stream_factory.h b/net/quic/chromium/quic_stream_factory.h
index 05d05d98ef872bc82984e000a2169dee2fef060d..3942735a80d4cefad0da85a92d3d4feeb4e9e5ff 100644
--- a/net/quic/chromium/quic_stream_factory.h
+++ b/net/quic/chromium/quic_stream_factory.h
@@ -250,6 +250,9 @@ class NET_EXPORT_PRIVATE QuicStreamFactory
   // Called by a session when it becomes idle.
   void OnIdleSession(QuicChromiumClientSession* session);
 
+  // Returns true if QUIC is know to be broken for |session|.
+  bool IsQuicBroken(QuicChromiumClientSession* session);
+
   // Called by a session when it is going away and no more streams should be
   // created on it.
   void OnSessionGoingAway(QuicChromiumClientSession* session);