Have CustomElement::didEnterDocument() / didLeaveDocument() take a reference

Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1214 matching lines @@
     if (Element* backdrop = pseudoElement(BACKDROP))
         backdrop->insertedInto(insertionPoint);
 
     if (!insertionPoint->isInTreeScope())
         return InsertionDone;
 
     if (hasRareData())
         elementRareData()->clearClassListValueForQuirksMode();
 
     if (isUpgradedCustomElement() && inDocument())
-        CustomElement::didEnterDocument(this, &document());
+        CustomElement::didEnterDocument(this, document());
 
     TreeScope* scope = insertionPoint->treeScope();
     if (scope != treeScope())
         return InsertionDone;
 
     const AtomicString& idValue = getIdAttribute();
     if (!idValue.isNull())
         updateId(scope, nullAtom, idValue);
 
     const AtomicString& nameValue = getNameAttribute();
@@ skipping 48 matching lines @@
                 updateLabel(treeScope, fastGetAttribute(forAttr), nullAtom);
         }
     }
 
     ContainerNode::removedFrom(insertionPoint);
     if (wasInDocument) {
         if (hasPendingResources())
             document().accessSVGExtensions()->removeElementFromPendingResources(this);
 
         if (isUpgradedCustomElement())
-            CustomElement::didLeaveDocument(this, &insertionPoint->document());
+            CustomElement::didLeaveDocument(this, insertionPoint->document());
     }
 
     if (hasRareData())
         elementRareData()->setIsInCanvasSubtree(false);
 }
 
 void Element::attach(const AttachContext& context)
 {
     PostAttachCallbackDisabler callbackDisabler(this);
     StyleResolverParentPusher parentPusher(this);
@@ skipping 2319 matching lines @@
     return 0;
 }
 
 Attribute* UniqueElementData::attributeItem(unsigned index)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(index < length());
     return &m_attributeVector.at(index);
 }
 
 } // namespace WebCore