Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/svg/SVGSymbolElement.cpp

Index: Source/core/svg/SVGSymbolElement.cpp
diff --git a/Source/core/svg/SVGSymbolElement.cpp b/Source/core/svg/SVGSymbolElement.cpp
index acbb57fe70350ab4d226408600c9b3271350cbca..2d65a2da6f39163f483f2996f5444357c74e18e6 100644
--- a/Source/core/svg/SVGSymbolElement.cpp
+++ b/Source/core/svg/SVGSymbolElement.cpp
@@ -41,7 +41,7 @@ BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGSymbolElement)
     REGISTER_PARENT_ANIMATED_PROPERTIES(SVGElement)
 END_REGISTER_ANIMATED_PROPERTIES
 
-inline SVGSymbolElement::SVGSymbolElement(const QualifiedName& tagName, Document* document)
+inline SVGSymbolElement::SVGSymbolElement(const QualifiedName& tagName, Document& document)
     : SVGElement(tagName, document)
 {
     ASSERT(hasTagName(SVGNames::symbolTag));
@@ -49,7 +49,7 @@ inline SVGSymbolElement::SVGSymbolElement(const QualifiedName& tagName, Document
     registerAnimatedPropertiesForSVGSymbolElement();
 }
 
-PassRefPtr<SVGSymbolElement> SVGSymbolElement::create(const QualifiedName& tagName, Document* document)
+PassRefPtr<SVGSymbolElement> SVGSymbolElement::create(const QualifiedName& tagName, Document& document)
 {
     return adoptRef(new SVGSymbolElement(tagName, document));
 }