Have Attr constructor take a Document / Element reference

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index b2ba85404dafcb1612f45d95646ee0625d1d4edf..107fd9de8103e565d8152f9f135a08b4514fd109 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -887,7 +887,7 @@ PassRefPtr<Node> Document::importNode(Node* importedNode, bool deep, ExceptionSt
         return newElement.release();
     }
     case ATTRIBUTE_NODE:
-        return Attr::create(this, QualifiedName(nullAtom, toAttr(importedNode)->name(), nullAtom), toAttr(importedNode)->value());
+        return Attr::create(*this, QualifiedName(nullAtom, toAttr(importedNode)->name(), nullAtom), toAttr(importedNode)->value());
     case DOCUMENT_FRAGMENT_NODE: {
         if (importedNode->isShadowRoot()) {
             // ShadowRoot nodes should not be explicitly importable.
@@ -4336,7 +4336,7 @@ PassRefPtr<Attr> Document::createAttributeNS(const String& namespaceURI, const S
         return 0;
     }
 
-    return Attr::create(this, qName, emptyString());
+    return Attr::create(*this, qName, emptyString());
 }
 
 const SVGDocumentExtensions* Document::svgExtensions()