[UI->Navigation] Forward navigation button issue with onbeforeunload dialog

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index d593431096a478973797fe1bb25f2586263f1ccd..cd80e86c435c726f21394ded76245ca108ed358c 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -4776,6 +4776,9 @@ void WebContentsImpl::OnDialogClosed(int render_process_id,
 
     FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                       BeforeUnloadDialogCancelled());
+
+    // Notification for UI updates in response to the changed navigation state.
+    NotifyNavigationStateChanged(INVALIDATE_TYPE_LOAD);
   }
 
   is_showing_before_unload_dialog_ = false;