Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/svg/SVGLinearGradientElement.cpp

Index: Source/core/svg/SVGLinearGradientElement.cpp
diff --git a/Source/core/svg/SVGLinearGradientElement.cpp b/Source/core/svg/SVGLinearGradientElement.cpp
index 5d5a8076cc303e27dd84fbe769d35f0283995257..cd1d6eacd84491dcde1612cea749eebc03ff3c6c 100644
--- a/Source/core/svg/SVGLinearGradientElement.cpp
+++ b/Source/core/svg/SVGLinearGradientElement.cpp
@@ -48,7 +48,7 @@ BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGLinearGradientElement)
     REGISTER_PARENT_ANIMATED_PROPERTIES(SVGGradientElement)
 END_REGISTER_ANIMATED_PROPERTIES
 
-inline SVGLinearGradientElement::SVGLinearGradientElement(const QualifiedName& tagName, Document* document)
+inline SVGLinearGradientElement::SVGLinearGradientElement(const QualifiedName& tagName, Document& document)
     : SVGGradientElement(tagName, document)
     , m_x1(LengthModeWidth)
     , m_y1(LengthModeHeight)
@@ -61,7 +61,7 @@ inline SVGLinearGradientElement::SVGLinearGradientElement(const QualifiedName& t
     registerAnimatedPropertiesForSVGLinearGradientElement();
 }
 
-PassRefPtr<SVGLinearGradientElement> SVGLinearGradientElement::create(const QualifiedName& tagName, Document* document)
+PassRefPtr<SVGLinearGradientElement> SVGLinearGradientElement::create(const QualifiedName& tagName, Document& document)
 {
     return adoptRef(new SVGLinearGradientElement(tagName, document));
 }