Debug printf

Source/core/html/HTMLMarqueeElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2007, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 36 matching lines @@
 }
 
 void HTMLMarqueeElement::attributeWillChange(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& newValue)
 {
     HTMLElement::attributeWillChange(name, oldValue, newValue);
     V8HTMLMarqueeElement::PrivateScript::attributeChangedCallbackMethod(document().frame(), this, name.toString(), oldValue, newValue);
 }
 
 Node::InsertionNotificationRequest HTMLMarqueeElement::insertedInto(ContainerNode* insertionPoint)
 {
+    Element* e = insertionPoint->isElementNode() ? toElement(insertionPoint) : nullptr;
+    printf("HTMLMarqueeElement::insertedInto this:%p insertedto:%p (%s)\n", this, insertionPoint,
+           e ? e->tagName().utf8().data() : "");
+    fflush(stdout);
     HTMLElement::insertedInto(insertionPoint);
     if (inDocument()) {
         V8HTMLMarqueeElement::PrivateScript::attachedCallbackMethod(document().frame(), this);
     }
     return InsertionDone;
 }
 
 void HTMLMarqueeElement::removedFrom(ContainerNode* insertionPoint)
 {
+    Element* e = insertionPoint->isElementNode() ? toElement(insertionPoint) : nullptr;
+    printf("HTMLMarqueeElement::removedFrom this:%p from:%p (%s)\n", this, insertionPoint,
+           e ? e->tagName().utf8().data() : "");
+    fflush(stdout);
     HTMLElement::removedFrom(insertionPoint);
     if (insertionPoint->inDocument()) {
         V8HTMLMarqueeElement::PrivateScript::detachedCallbackMethod(insertionPoint->document().frame(), this);
     }
 }
 
 } // namespace blink