Change QuicStreamRequest::Request() to take a preferred QuicVersion so that

net/http/http_stream_factory_impl_job.h

Index: net/http/http_stream_factory_impl_job.h
diff --git a/net/http/http_stream_factory_impl_job.h b/net/http/http_stream_factory_impl_job.h
index dbfa4d13a46d7da9965b91fde1e4ff0e40d353c7..e47b78913810620b5d667ccdc39c1dec5614b536 100644
--- a/net/http/http_stream_factory_impl_job.h
+++ b/net/http/http_stream_factory_impl_job.h
@@ -190,6 +190,7 @@ class HttpStreamFactoryImpl::Job {
       HostPortPair destination,
       GURL origin_url,
       NextProto alternative_protocol,
+      QuicVersion quic_version,
       const ProxyServer& alternative_proxy_server,
       bool enable_ip_based_pooling,
       NetLog* net_log);
@@ -445,6 +446,10 @@ class HttpStreamFactoryImpl::Job {
   // True if Job uses QUIC.
   const bool using_quic_;
 
+  // QuicVersion that should be used to connect to the QUIC server if Job uses
+  // QUIC.
+  QuicVersion quic_version_;
+
   // True if Alternative Service protocol field requires that HTTP/2 is used.
   // In this case, Job fails if it cannot pool to an existing SpdySession and
   // the server does not negotiate HTTP/2 on a new socket.
@@ -536,6 +541,7 @@ class HttpStreamFactoryImpl::JobFactory {
       HostPortPair destination,
       GURL origin_url,
       NextProto alternative_protocol,
+      QuicVersion quic_version,
       bool enable_ip_based_pooling,
       NetLog* net_log);