Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/svg/SVGLineElement.h

Index: Source/core/svg/SVGLineElement.h
diff --git a/Source/core/svg/SVGLineElement.h b/Source/core/svg/SVGLineElement.h
index c1e8a5143d9a588b480b99b57ecb30b7143e6240..af514be6b495f62e4bf9bdf7fa6394bec163903b 100644
--- a/Source/core/svg/SVGLineElement.h
+++ b/Source/core/svg/SVGLineElement.h
@@ -32,10 +32,10 @@ namespace WebCore {
 class SVGLineElement FINAL : public SVGGraphicsElement,
                              public SVGExternalResourcesRequired {
 public:
-    static PassRefPtr<SVGLineElement> create(const QualifiedName&, Document*);
+    static PassRefPtr<SVGLineElement> create(const QualifiedName&, Document&);
 
 private:
-    SVGLineElement(const QualifiedName&, Document*);
+    SVGLineElement(const QualifiedName&, Document&);
 
     virtual bool isValid() const { return SVGTests::isValid(); }
     virtual bool supportsFocus() const OVERRIDE { return hasFocusEventListeners(); }