Update owner document of Range objects if start/end boundary points in different document

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 a8a92c88fd49e58fd81d6a096f9c22cfb38f67fc..d8032993881c3a9596de7d63e1ddd71aea7c5dac 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -3770,6 +3770,17 @@ void Document::updateRangesAfterChildrenChanged(ContainerNode* container)
     }
 }
 
+void Document::updateRangesAfterNodeMovedToAnotherDocument(const Node& node)
+{
+    ASSERT(node.document() != this);
+    if (m_ranges.isEmpty())
+        return;
+    AttachedRangeSet ranges = m_ranges;
+    AttachedRangeSet::const_iterator end = ranges.end();
+    for (AttachedRangeSet::const_iterator it = ranges.begin(); it != end; ++it)
+        (*it)->updateOwnerDocumentIfNeeded();
+}
+
 void Document::nodeChildrenWillBeRemoved(ContainerNode& container)
 {
     NoEventDispatchAssertion assertNoEventDispatch;