Add a GetAlternativeService method to HttpStream to return any

net/http/http_stream.h

Index: net/http/http_stream.h
diff --git a/net/http/http_stream.h b/net/http/http_stream.h
index 3def66ee9a2dfc2d8d9fd14a4a100d85c8b09f6e..78458e4b29217b74592de319668728ade77a163c 100644
--- a/net/http/http_stream.h
+++ b/net/http/http_stream.h
@@ -30,6 +30,7 @@ class ECPrivateKey;
 
 namespace net {
 
+struct AlternativeService;
 class HttpNetworkSession;
 class HttpRequestHeaders;
 struct HttpRequestInfo;
@@ -150,6 +151,11 @@ class NET_EXPORT_PRIVATE HttpStream {
   // undefined.
   virtual void GetSSLInfo(SSLInfo* ssl_info) = 0;
 
+  // Returns true and populates |alternative_service| if an alternative service
+  // was used to for this stream. Otherwise returns false.
+  virtual bool GetAlternativeService(
+      AlternativeService* alternative_service) const = 0;
+
   // Get the SSLCertRequestInfo associated with this stream's connection.
   // This should only be called for streams over SSL sockets, otherwise the
   // behavior is undefined.