Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/svg/SVGMetadataElement.h

Index: Source/core/svg/SVGMetadataElement.h
diff --git a/Source/core/svg/SVGMetadataElement.h b/Source/core/svg/SVGMetadataElement.h
index 736e3b3c736ec8b8f6eaa95456aefb09d81153c1..ee6eb3236db7cb1c7ec42515b96edcf8f49846ad 100644
--- a/Source/core/svg/SVGMetadataElement.h
+++ b/Source/core/svg/SVGMetadataElement.h
@@ -27,10 +27,10 @@ namespace WebCore {
 
 class SVGMetadataElement FINAL : public SVGElement {
 public:
-    static PassRefPtr<SVGMetadataElement> create(const QualifiedName&, Document*);
+    static PassRefPtr<SVGMetadataElement> create(const QualifiedName&, Document&);
 
 private:
-    SVGMetadataElement(const QualifiedName&, Document*);
+    SVGMetadataElement(const QualifiedName&, Document&);
 
     virtual bool rendererIsNeeded(const NodeRenderingContext&) OVERRIDE { return false; }
 };