Groundwork for cancelling quartc streams after a deadline is exceeded.

net/quic/quartc/quartc_stream.h

Index: net/quic/quartc/quartc_stream.h
diff --git a/net/quic/quartc/quartc_stream.h b/net/quic/quartc/quartc_stream.h
index 188345104215c6c39d347854aa50eb759e2ab35f..d1ab5a6640b34abedd8514c1f8fa1a102325480d 100644
--- a/net/quic/quartc/quartc_stream.h
+++ b/net/quic/quartc/quartc_stream.h
@@ -32,6 +32,10 @@ class QuartcStream : public QuicStream, public QuartcStreamInterface {
 
   bool fin_sent() override;
 
+  int stream_error() override;
+
+  int connection_error() override;
+
   void Write(const char* data,
              size_t size,
              const WriteParameters& param) override;