Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/svg/SVGCircleElement.h

Index: Source/core/svg/SVGCircleElement.h
diff --git a/Source/core/svg/SVGCircleElement.h b/Source/core/svg/SVGCircleElement.h
index 99dc6421aa13cc62c67359fc19ea57117a44ce72..ae702f6974fc469467df2977627bb73f4e0b64ab 100644
--- a/Source/core/svg/SVGCircleElement.h
+++ b/Source/core/svg/SVGCircleElement.h
@@ -32,10 +32,10 @@ namespace WebCore {
 class SVGCircleElement FINAL : public SVGGraphicsElement,
                                public SVGExternalResourcesRequired {
 public:
-    static PassRefPtr<SVGCircleElement> create(const QualifiedName&, Document*);
+    static PassRefPtr<SVGCircleElement> create(const QualifiedName&, Document&);
 
 private:
-    SVGCircleElement(const QualifiedName&, Document*);
+    SVGCircleElement(const QualifiedName&, Document&);
 
     virtual bool isValid() const { return SVGTests::isValid(); }
     virtual bool supportsFocus() const OVERRIDE { return hasFocusEventListeners(); }