[Net] Propagate priority changes from HttpNetworkTransaction to its request

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 2c2eb3495860690971188831303fe9672c670bec..01a794a1bc7847697daee3bc21c64efa8cd1ebe6 100644
--- a/net/http/http_stream_factory_impl_job.h
+++ b/net/http/http_stream_factory_impl_job.h
@@ -74,6 +74,9 @@ class HttpStreamFactoryImpl::Job {
   // Used to detach the Job from |request|.
   void Orphan(const Request* request);
 
+  void SetPriority(RequestPriority priority);
+
+  RequestPriority priority() const { return priority_; }
   bool was_npn_negotiated() const;
   NextProto protocol_negotiated() const;
   bool using_spdy() const;