Morph the APIs for Node, ParentNode, and Element closer to the specs

sky/engine/core/dom/Node.h

Index: sky/engine/core/dom/Node.h
diff --git a/sky/engine/core/dom/Node.h b/sky/engine/core/dom/Node.h
index 357b8248eac1fa9d47e5e5607016b5081d0c97be..4518265a9915677e534f3dc13a55d7169e5a2c9d 100644
--- a/sky/engine/core/dom/Node.h
+++ b/sky/engine/core/dom/Node.h
@@ -144,6 +144,14 @@ public:
     Node* firstChild() const;
     Node* lastChild() const;
 
+    Element* previousElementSibling();
+    Element* nextElementSibling();
+
+    // These functions release the nodes from |nodes|.
+    void newInsertBefore(Vector<RefPtr<Node>>& nodes, ExceptionState&);
+    void newInsertAfter(Vector<RefPtr<Node>>& nodes, ExceptionState&);
+    void replaceWith(Vector<RefPtr<Node>>& nodes, ExceptionState&);
+
     void remove(ExceptionState&);
 
     // These should all actually return a node, but this is only important for language bindings,
@@ -340,7 +348,7 @@ public:
         return *m_treeScope;
     }
 
-    ContainerNode* ownerScope() const;
+    ContainerNode* owner() const;
 
     bool inActiveDocument() const;