Merge 141198

Source/WebCore/dom/ContainerNode.cpp

Index: Source/WebCore/dom/ContainerNode.cpp
===================================================================
--- Source/WebCore/dom/ContainerNode.cpp	(revision 141792)
+++ Source/WebCore/dom/ContainerNode.cpp	(working copy)
@@ -313,6 +313,9 @@
     if (nextChild->previousSibling() == newChild || nextChild == newChild) // nothing to do
         return;
 
+    if (document() != newChild->document())
+        document()->adoptNode(newChild.get(), ASSERT_NO_EXCEPTION);
+
     insertBeforeCommon(nextChild, newChild.get());
 
     childrenChanged(true, newChild->previousSibling(), nextChild, 1);
@@ -685,8 +688,10 @@
     ASSERT(newChild);
     ASSERT(!newChild->parentNode()); // Use appendChild if you need to handle reparenting (and want DOM mutation events).
     ASSERT(!newChild->isDocumentFragment());
-    ASSERT(document() == newChild->document());
 
+    if (document() != newChild->document())
+        document()->adoptNode(newChild.get(), ASSERT_NO_EXCEPTION);
+
     Node* last = m_lastChild;
     {
         NoEventDispatchAssertion assertNoEventDispatch;