[Net] Propagate priority changes from URLRequest to HttpTransaction

net/url_request/url_request_job.h

Index: net/url_request/url_request_job.h
diff --git a/net/url_request/url_request_job.h b/net/url_request/url_request_job.h
index 56e1307cb041b5a051cc4aec8115d51a291bf97a..878e3edcd0761dd00dd41832c624ae2b817a1d44 100644
--- a/net/url_request/url_request_job.h
+++ b/net/url_request/url_request_job.h
@@ -17,6 +17,7 @@
 #include "net/base/host_port_pair.h"
 #include "net/base/load_states.h"
 #include "net/base/net_export.h"
+#include "net/base/request_priority.h"
 #include "net/base/upload_progress.h"
 #include "net/cookies/canonical_cookie.h"
 
@@ -199,6 +200,9 @@ class NET_EXPORT URLRequestJob : public base::RefCounted<URLRequestJob>,
   // canceled by an explicit NetworkDelegate::NotifyURLRequestDestroyed() call.
   virtual void NotifyURLRequestDestroyed();
 
+  // Called when the priority of the parent request changes.
+  virtual void SetPriority(RequestPriority priority);
+
  protected:
   friend class base::RefCounted<URLRequestJob>;
   virtual ~URLRequestJob();