Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/svg/SVGImageElement.h

Index: Source/core/svg/SVGImageElement.h
diff --git a/Source/core/svg/SVGImageElement.h b/Source/core/svg/SVGImageElement.h
index 702b0b1b2578ef03e752ebadd0fae32745085119..c4170176f8b5f9aa59009ca5311b212b43db2f60 100644
--- a/Source/core/svg/SVGImageElement.h
+++ b/Source/core/svg/SVGImageElement.h
@@ -36,10 +36,10 @@ class SVGImageElement FINAL : public SVGGraphicsElement,
                               public SVGExternalResourcesRequired,
                               public SVGURIReference {
 public:
-    static PassRefPtr<SVGImageElement> create(const QualifiedName&, Document*);
+    static PassRefPtr<SVGImageElement> create(const QualifiedName&, Document&);
 
 private:
-    SVGImageElement(const QualifiedName&, Document*);
+    SVGImageElement(const QualifiedName&, Document&);
 
     virtual bool isValid() const { return SVGTests::isValid(); }
     virtual bool supportsFocus() const OVERRIDE { return hasFocusEventListeners(); }