Implement DOM: prepend, append, before, after & replaceWith

Source/core/dom/Node.h

Index: Source/core/dom/Node.h
diff --git a/Source/core/dom/Node.h b/Source/core/dom/Node.h
index 63b3599828d035b1541d653dbf0829ba1841540f..3eeb6f5303ec1e30e4cb78376911f2c8b0d2fcf2 100644
--- a/Source/core/dom/Node.h
+++ b/Source/core/dom/Node.h
@@ -26,6 +26,7 @@
 #define Node_h
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
+#include "bindings/core/v8/UnionTypesCore.h"
 #include "core/CoreExport.h"
 #include "core/dom/MutationObserver.h"
 #include "core/dom/SimulatedClickOptions.h"
@@ -206,7 +207,15 @@ public:
     Node* firstChild() const;
     Node* lastChild() const;
 
+    void prepend(const HeapVector<NodeOrString>&, ExceptionState&);
+    void append(const HeapVector<NodeOrString>&, ExceptionState&);
+    void before(const HeapVector<NodeOrString>&, ExceptionState&);
+    void after(const HeapVector<NodeOrString>&, ExceptionState&);
+    void replaceWith(const HeapVector<NodeOrString>&, ExceptionState&);
     void remove(ExceptionState&);
+    PassRefPtrWillBeRawPtr<Node> nodeOrStringToNode(const NodeOrString&);
+    Node* viablePreviosOrNextSibling(const HeapVector<NodeOrString>&, bool);
+    PassRefPtrWillBeRawPtr<Node> convertNodesIntoNode(const HeapVector<NodeOrString>&);
 
     Node* pseudoAwareNextSibling() const;
     Node* pseudoAwarePreviousSibling() const;