Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/svg/SVGFEBlendElement.h

Index: Source/core/svg/SVGFEBlendElement.h
diff --git a/Source/core/svg/SVGFEBlendElement.h b/Source/core/svg/SVGFEBlendElement.h
index 0c54b06fccf0c5e92f42a87ccbd979f3ced00470..af78dd966822630b46fa9b3ee6628c87cf56e221 100644
--- a/Source/core/svg/SVGFEBlendElement.h
+++ b/Source/core/svg/SVGFEBlendElement.h
@@ -70,10 +70,10 @@ struct SVGPropertyTraits<BlendModeType> {
 
 class SVGFEBlendElement FINAL : public SVGFilterPrimitiveStandardAttributes {
 public:
-    static PassRefPtr<SVGFEBlendElement> create(const QualifiedName&, Document*);
+    static PassRefPtr<SVGFEBlendElement> create(const QualifiedName&, Document&);
 
 private:
-    SVGFEBlendElement(const QualifiedName&, Document*);
+    SVGFEBlendElement(const QualifiedName&, Document&);
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;