Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/svg/SVGHKernElement.h

Index: Source/core/svg/SVGHKernElement.h
diff --git a/Source/core/svg/SVGHKernElement.h b/Source/core/svg/SVGHKernElement.h
index 6146e9754de176406bee18d2de1fef41a726fe5b..c142d95579fb411efebaf9c28ecc6a7c2769d647 100644
--- a/Source/core/svg/SVGHKernElement.h
+++ b/Source/core/svg/SVGHKernElement.h
@@ -29,12 +29,12 @@ namespace WebCore {
 
 class SVGHKernElement FINAL : public SVGElement {
 public:
-    static PassRefPtr<SVGHKernElement> create(const QualifiedName&, Document*);
+    static PassRefPtr<SVGHKernElement> create(const QualifiedName&, Document&);
 
     void buildHorizontalKerningPair(KerningPairVector&);
 
 private:
-    SVGHKernElement(const QualifiedName&, Document*);
+    SVGHKernElement(const QualifiedName&, Document&);
 
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;