Add a GetAlternativeService method to HttpStream to return any

net/http/http_basic_stream.cc

Index: net/http/http_basic_stream.cc
diff --git a/net/http/http_basic_stream.cc b/net/http/http_basic_stream.cc
index 312b927851b3d9f1f6d122c1e5e5ed973f0d9810..3a85a6df81686f84c56bf818b637633583ae3ccb 100644
--- a/net/http/http_basic_stream.cc
+++ b/net/http/http_basic_stream.cc
@@ -99,6 +99,11 @@ bool HttpBasicStream::GetLoadTimingInfo(
                                                 load_timing_info);
 }
 
+bool HttpBasicStream::GetAlternativeService(
+    AlternativeService* alternative_service) const {
+  return false;
+}
+
 void HttpBasicStream::GetSSLInfo(SSLInfo* ssl_info) {
   parser()->GetSSLInfo(ssl_info);
 }