Only send distillability message on valid pipe

components/dom_distiller/content/renderer/distillability_agent.cc

Index: components/dom_distiller/content/renderer/distillability_agent.cc
diff --git a/components/dom_distiller/content/renderer/distillability_agent.cc b/components/dom_distiller/content/renderer/distillability_agent.cc
index 543a47df741821fae2228f82f61ef934b45011e3..3b0dd9ba973547301be1184771146944c4cc04d0 100644
--- a/components/dom_distiller/content/renderer/distillability_agent.cc
+++ b/components/dom_distiller/content/renderer/distillability_agent.cc
@@ -203,6 +203,7 @@ void DistillabilityAgent::DidMeaningfulLayout(
   render_frame()->GetRemoteInterfaces()->GetInterface(
       &distillability_service);
   DCHECK(distillability_service);
+  if (!distillability_service.is_bound()) return;
   distillability_service->NotifyIsDistillable(
       IsDistillablePage(doc, is_last), is_last);
 }