Add a GetAlternativeService method to HttpStream to return any

net/quic/chromium/quic_http_stream.h

Index: net/quic/chromium/quic_http_stream.h
diff --git a/net/quic/chromium/quic_http_stream.h b/net/quic/chromium/quic_http_stream.h
index 2ca5bbcfed78744500833c60e124fbd03c2a9bcf..77661749844269770ca80d77cc7ca8cdf41fc4c5 100644
--- a/net/quic/chromium/quic_http_stream.h
+++ b/net/quic/chromium/quic_http_stream.h
@@ -64,6 +64,8 @@ class NET_EXPORT_PRIVATE QuicHttpStream
   int64_t GetTotalReceivedBytes() const override;
   int64_t GetTotalSentBytes() const override;
   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override;
+  bool GetAlternativeService(
+      AlternativeService* alternative_service) const override;
   void PopulateNetErrorDetails(NetErrorDetails* details) override;
   void SetPriority(RequestPriority priority) override;
 
@@ -150,6 +152,7 @@ class NET_EXPORT_PRIVATE QuicHttpStream
   State next_state_;
 
   base::WeakPtr<QuicChromiumClientSession> session_;
+  const QuicServerId server_id_;  // The ID of the QUIC server for this stream.
 
   HttpServerProperties* http_server_properties_;