Don't remove DistillabilityService on RenderFrameHost switch

components/dom_distiller/content/browser/distillability_driver.cc

Index: components/dom_distiller/content/browser/distillability_driver.cc
diff --git a/components/dom_distiller/content/browser/distillability_driver.cc b/components/dom_distiller/content/browser/distillability_driver.cc
index 354b3b5f3bbc2acca60adb74ba9b1bfc3b5f776e..f2275b34a9bf6d9c248c6ba5142488532f56793a 100644
--- a/components/dom_distiller/content/browser/distillability_driver.cc
+++ b/components/dom_distiller/content/browser/distillability_driver.cc
@@ -85,10 +85,6 @@ void DistillabilityDriver::RenderFrameHostChanged(
   // or from a native page), the service needs to be attached to that host.
   mojo_needs_setup_ = true;
   SetupMojoService(new_host);
-  // Clean up the service on the old host if possible.
-  if (!old_host || !old_host->GetInterfaceRegistry()) return;
-  old_host->GetInterfaceRegistry()
-      ->RemoveInterface<mojom::DistillabilityService>();
 }
 
 void DistillabilityDriver::DidStartProvisionalLoadForFrame(