Have Attr constructor take a Document / Element reference

Source/core/dom/Attr.cpp

Index: Source/core/dom/Attr.cpp
diff --git a/Source/core/dom/Attr.cpp b/Source/core/dom/Attr.cpp
index e95f8caccf713ff267fbe5606190543d2d7dcd99..0d20c05a43f440b6aed7bf8616e12d0708ca5563 100644
--- a/Source/core/dom/Attr.cpp
+++ b/Source/core/dom/Attr.cpp
@@ -37,9 +37,9 @@ namespace WebCore {
 
 using namespace HTMLNames;
 
-Attr::Attr(Element* element, const QualifiedName& name)
-    : ContainerNode(&element->document())
-    , m_element(element)
+Attr::Attr(Element& element, const QualifiedName& name)
+    : ContainerNode(&element.document())
+    , m_element(&element)
     , m_name(name)
     , m_ignoreChildrenChanged(0)
     , m_specified(true)
@@ -47,8 +47,8 @@ Attr::Attr(Element* element, const QualifiedName& name)
     ScriptWrappable::init(this);
 }
 
-Attr::Attr(Document* document, const QualifiedName& name, const AtomicString& standaloneValue)
-    : ContainerNode(document)
+Attr::Attr(Document& document, const QualifiedName& name, const AtomicString& standaloneValue)
+    : ContainerNode(&document)
     , m_element(0)
     , m_name(name)
     , m_standaloneValue(standaloneValue)
@@ -58,14 +58,14 @@ Attr::Attr(Document* document, const QualifiedName& name, const AtomicString& st
     ScriptWrappable::init(this);
 }
 
-PassRefPtr<Attr> Attr::create(Element* element, const QualifiedName& name)
+PassRefPtr<Attr> Attr::create(Element& element, const QualifiedName& name)
 {
     RefPtr<Attr> attr = adoptRef(new Attr(element, name));
     attr->createTextChild();
     return attr.release();
 }
 
-PassRefPtr<Attr> Attr::create(Document* document, const QualifiedName& name, const AtomicString& value)
+PassRefPtr<Attr> Attr::create(Document& document, const QualifiedName& name, const AtomicString& value)
 {
     RefPtr<Attr> attr = adoptRef(new Attr(document, name, value));
     attr->createTextChild();
@@ -143,7 +143,7 @@ void Attr::setNodeValue(const String& v)
 
 PassRefPtr<Node> Attr::cloneNode(bool /*deep*/)
 {
-    RefPtr<Attr> clone = adoptRef(new Attr(&document(), qualifiedName(), value()));
+    RefPtr<Attr> clone = adoptRef(new Attr(document(), qualifiedName(), value()));
     cloneChildNodes(clone.get());
     return clone.release();
 }