GuestView: Fix message routing across embedder navigations

extensions/renderer/guest_view/extensions_guest_view_container.cc

Index: extensions/renderer/guest_view/extensions_guest_view_container.cc
diff --git a/extensions/renderer/guest_view/extensions_guest_view_container.cc b/extensions/renderer/guest_view/extensions_guest_view_container.cc
index 6f2dd0e829e697daed9294d2237250646776ce75..77456abb02fb81542ba1604dca492864a6d0cfa5 100644
--- a/extensions/renderer/guest_view/extensions_guest_view_container.cc
+++ b/extensions/renderer/guest_view/extensions_guest_view_container.cc
@@ -62,8 +62,7 @@ void ExtensionsGuestViewContainer::AttachRequest::PerformRequest() {
 
   // Step 1, send the attach params to extensions/.
   container()->render_frame()->Send(
-      new GuestViewHostMsg_AttachGuest(container()->render_view_routing_id(),
-                                       container()->element_instance_id(),
+      new GuestViewHostMsg_AttachGuest(container()->element_instance_id(),
                                        guest_instance_id_,
                                        *params_));