Have HTMLElements / SVGElements constructors take a Document reference in argument

Source/core/svg/SVGUseElement.cpp

Index: Source/core/svg/SVGUseElement.cpp
diff --git a/Source/core/svg/SVGUseElement.cpp b/Source/core/svg/SVGUseElement.cpp
index a2c37c420baa2fc9c50090e75232be2dd0da28cf..9c2590890f53f82535da077bbd915e9228178d7a 100644
--- a/Source/core/svg/SVGUseElement.cpp
+++ b/Source/core/svg/SVGUseElement.cpp
@@ -71,7 +71,7 @@ BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGUseElement)
     REGISTER_PARENT_ANIMATED_PROPERTIES(SVGGraphicsElement)
 END_REGISTER_ANIMATED_PROPERTIES
 
-inline SVGUseElement::SVGUseElement(const QualifiedName& tagName, Document* document, bool wasInsertedByParser)
+inline SVGUseElement::SVGUseElement(const QualifiedName& tagName, Document& document, bool wasInsertedByParser)
     : SVGGraphicsElement(tagName, document)
     , m_x(LengthModeWidth)
     , m_y(LengthModeHeight)
@@ -88,7 +88,7 @@ inline SVGUseElement::SVGUseElement(const QualifiedName& tagName, Document* docu
     registerAnimatedPropertiesForSVGUseElement();
 }
 
-PassRefPtr<SVGUseElement> SVGUseElement::create(const QualifiedName& tagName, Document* document, bool wasInsertedByParser)
+PassRefPtr<SVGUseElement> SVGUseElement::create(const QualifiedName& tagName, Document& document, bool wasInsertedByParser)
 {
     // Always build a #shadow-root for SVGUseElement.
     RefPtr<SVGUseElement> use = adoptRef(new SVGUseElement(tagName, document, wasInsertedByParser));
@@ -721,7 +721,7 @@ void SVGUseElement::expandUseElementsInShadowTree(Node* element)
 
         // Don't ASSERT(target) here, it may be "pending", too.
         // Setup sub-shadow tree root node
-        RefPtr<SVGGElement> cloneParent = SVGGElement::create(SVGNames::gTag, referencedDocument());
+        RefPtr<SVGGElement> cloneParent = SVGGElement::create(SVGNames::gTag, *referencedDocument());
         use->cloneChildNodes(cloneParent.get());
 
         // Spec: In the generated content, the 'use' will be replaced by 'g', where all attributes from the
@@ -768,7 +768,8 @@ void SVGUseElement::expandSymbolElementsInShadowTree(Node* element)
         // height are provided on the 'use' element, then these attributes will be transferred to
         // the generated 'svg'. If attributes width and/or height are not specified, the generated
         // 'svg' element will use values of 100% for these attributes.
-        RefPtr<SVGSVGElement> svgElement = SVGSVGElement::create(SVGNames::svgTag, referencedDocument());
+        ASSERT(referencedDocument());
+        RefPtr<SVGSVGElement> svgElement = SVGSVGElement::create(SVGNames::svgTag, *referencedDocument());
 
         // Transfer all data (attributes, etc.) from <symbol> to the new <svg> element.
         svgElement->cloneDataFromElement(*toElement(element));