  int GetRoutingId(v8::Isolate* isolate) {
    content::RenderFrame* render_frame;
    if (!MaybeGetRenderFrame(isolate, "routingId", &render_frame))
      return 0;

    return render_frame->GetRoutingID();
  }
  int GetRoutingId(v8::Isolate* isolate) {
    content::RenderFrame* render_frame;
    if (!MaybeGetRenderFrame(isolate, "routingId", &render_frame))
      return 0;

    return render_frame->GetRoutingID();
  }