Add a GetAlternativeService method to HttpStream to return any

net/http/http_stream_factory_impl_unittest.cc

Index: net/http/http_stream_factory_impl_unittest.cc
diff --git a/net/http/http_stream_factory_impl_unittest.cc b/net/http/http_stream_factory_impl_unittest.cc
index 2ac222bf871e07b90806434a483ab563b5b75e3a..833c4292e1352f52144c496f9814d7986ee1fcde 100644
--- a/net/http/http_stream_factory_impl_unittest.cc
+++ b/net/http/http_stream_factory_impl_unittest.cc
@@ -127,6 +127,10 @@ class MockWebSocketHandshakeStream : public WebSocketHandshakeStreamBase {
   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override {
     return false;
   }
+  bool GetAlternativeService(
+      AlternativeService* alternative_service) const override {
+    return false;
+  }
   void GetSSLInfo(SSLInfo* ssl_info) override {}
   void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override {}
   bool GetRemoteEndpoint(IPEndPoint* endpoint) override { return false; }