Make GetAlternateProtocolRequestFor return AlternativeService.

net/http/http_stream_factory_impl.h

Index: net/http/http_stream_factory_impl.h
diff --git a/net/http/http_stream_factory_impl.h b/net/http/http_stream_factory_impl.h
index 8ee03a6dc2aef74ded7e5a38070cf83f6c01a876..d49a2af0b5ea880f3643693066ead315a1c8c2e4 100644
--- a/net/http/http_stream_factory_impl.h
+++ b/net/http/http_stream_factory_impl.h
@@ -75,9 +75,8 @@ class NET_EXPORT_PRIVATE HttpStreamFactoryImpl : public HttpStreamFactory {
       WebSocketHandshakeStreamBase::CreateHelper* create_helper,
       const BoundNetLog& net_log);
 
-  AlternateProtocolInfo GetAlternateProtocolRequestFor(
-      const GURL& original_url,
-      GURL* alternate_url);
+  AlternativeService GetAlternativeServiceRequestFor(const GURL& original_url,
+                                                     GURL* alternate_url);
 
   // Detaches |job| from |request|.
   void OrphanJob(Job* job, const Request* request);