Merge 73559

WebCore/dom/Document.cpp

Index: WebCore/dom/Document.cpp
===================================================================
--- WebCore/dom/Document.cpp	(revision 73793)
+++ WebCore/dom/Document.cpp	(working copy)
@@ -3302,6 +3302,18 @@
     m_nodeIterators.remove(ni);
 }
 
+void Document::moveNodeIteratorsToNewDocument(Node* node, Document* newDocument)
+{
+    HashSet<NodeIterator*> nodeIteratorsList = m_nodeIterators;
+    HashSet<NodeIterator*>::const_iterator nodeIteratorsEnd = nodeIteratorsList.end();
+    for (HashSet<NodeIterator*>::const_iterator it = nodeIteratorsList.begin(); it != nodeIteratorsEnd; ++it) {
+        if ((*it)->referenceNode() == node) {
+            detachNodeIterator(*it);
+            newDocument->attachNodeIterator(*it);
+        }
+    }
+}
+
 void Document::nodeChildrenChanged(ContainerNode* container)
 {
     if (!disableRangeMutation(page())) {