Allow MimeHandlerViewGuest be embedded inside OOPIFs

components/guest_view/renderer/guest_view_request.cc

Index: components/guest_view/renderer/guest_view_request.cc
diff --git a/components/guest_view/renderer/guest_view_request.cc b/components/guest_view/renderer/guest_view_request.cc
index 1d26c3f4462bab8457123d1ec9e911feff15fd7f..9c81c8811ad78a9397697d5e154568ec818b6ecf 100644
--- a/components/guest_view/renderer/guest_view_request.cc
+++ b/components/guest_view/renderer/guest_view_request.cc
@@ -62,17 +62,17 @@ GuestViewAttachRequest::~GuestViewAttachRequest() {
 }
 
 void GuestViewAttachRequest::PerformRequest() {
-  if (!container()->render_frame())
+  content::RenderFrame* render_frame = container()->render_frame();
+  if (!render_frame)
     return;
 
   // Step 1, send the attach params to guest_view/.
-  container()->render_frame()->Send(
-      new GuestViewHostMsg_AttachGuest(container()->element_instance_id(),
-                                       guest_instance_id_,
-                                       *params_));
+  render_frame->Send(new GuestViewHostMsg_AttachGuest(
+      container()->element_instance_id(), guest_instance_id_,
+      render_frame->GetRoutingID(), *params_));
 
   // Step 2, attach plugin through content/.
-  container()->render_frame()->AttachGuest(container()->element_instance_id());
+  render_frame->AttachGuest(container()->element_instance_id());
 }
 
 void GuestViewAttachRequest::HandleResponse(const IPC::Message& message) {