Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/html/HTMLKeygenElement.h

Index: Source/core/html/HTMLKeygenElement.h
diff --git a/Source/core/html/HTMLKeygenElement.h b/Source/core/html/HTMLKeygenElement.h
index 6b12e19521432cb914ac9a65a7b5bff9c9ea73f8..69965f66b1b0339180b3faa5d54dfc8685f378bc 100644
--- a/Source/core/html/HTMLKeygenElement.h
+++ b/Source/core/html/HTMLKeygenElement.h
@@ -32,7 +32,7 @@ class HTMLSelectElement;
 
 class HTMLKeygenElement FINAL : public HTMLFormControlElementWithState {
 public:
-    static PassRefPtr<HTMLKeygenElement> create(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
+    static PassRefPtr<HTMLKeygenElement> create(const QualifiedName& tagName, Document& document, HTMLFormElement* form)
     {
         return adoptRef(new HTMLKeygenElement(tagName, document, form));
     }
@@ -40,7 +40,7 @@ public:
     virtual bool willValidate() const OVERRIDE { return false; }
 
 private:
-    HTMLKeygenElement(const QualifiedName&, Document*, HTMLFormElement*);
+    HTMLKeygenElement(const QualifiedName&, Document&, HTMLFormElement*);
 
     virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }