ExternalPopupMenu should recreate its popup only if a SELECT subtree is updated

third_party/WebKit/Source/core/loader/EmptyClients.cpp

Index: third_party/WebKit/Source/core/loader/EmptyClients.cpp
diff --git a/third_party/WebKit/Source/core/loader/EmptyClients.cpp b/third_party/WebKit/Source/core/loader/EmptyClients.cpp
index c65042cc31440d71a52b6485c6909b4ce435a811..ad0fd27f16280e98a116ad575b74a6ca18fb7134 100644
--- a/third_party/WebKit/Source/core/loader/EmptyClients.cpp
+++ b/third_party/WebKit/Source/core/loader/EmptyClients.cpp
@@ -62,7 +62,7 @@ class EmptyPopupMenu : public PopupMenu {
 public:
     void show() override { }
     void hide() override { }
-    void updateFromElement() override { }
+    void updateFromElement(UpdateReason) override { }
     void disconnectClient() override { }
 };