Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/html/HTMLMapElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 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 14 matching lines @@
 
 #include "core/html/HTMLElement.h"
 
 namespace WebCore {
 
 class HitTestResult;
 class HTMLImageElement;
 
 class HTMLMapElement FINAL : public HTMLElement {
 public:
-    static PassRefPtr<HTMLMapElement> create(Document*);
-    static PassRefPtr<HTMLMapElement> create(const QualifiedName&, Document*);
+    static PassRefPtr<HTMLMapElement> create(Document&);
+    static PassRefPtr<HTMLMapElement> create(const QualifiedName&, Document&);
     virtual ~HTMLMapElement();
 
     const AtomicString& getName() const { return m_name; }
 
     bool mapMouseEvent(LayoutPoint location, const LayoutSize&, HitTestResult&);
 
     HTMLImageElement* imageElement();
     PassRefPtr<HTMLCollection> areas();
 
 private:
-    HTMLMapElement(const QualifiedName&, Document*);
+    HTMLMapElement(const QualifiedName&, Document&);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
 
     AtomicString m_name;
 };
 
 inline HTMLMapElement* toHTMLMapElement(Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(HTMLNames::mapTag));
     return static_cast<HTMLMapElement*>(node);
 }
 
 } //namespace
 
 #endif