Add a ScriptForbiddenScope to ContainerNode::insertBeforeCommon

Source/core/dom/ContainerNode.cpp

Index: Source/core/dom/ContainerNode.cpp
diff --git a/Source/core/dom/ContainerNode.cpp b/Source/core/dom/ContainerNode.cpp
index 366598a9ce6a8220762d91d88a5d7cfb667cfcad..a42f5775c2d55400b137343c0ea468ae6f8227d0 100644
--- a/Source/core/dom/ContainerNode.cpp
+++ b/Source/core/dom/ContainerNode.cpp
@@ -250,6 +250,7 @@ void ContainerNode::insertBefore(PassRefPtr<Node> newChild, Node* refChild, Exce
 void ContainerNode::insertBeforeCommon(Node& nextChild, Node& newChild)
 {
     NoEventDispatchAssertion assertNoEventDispatch;
+    ScriptForbiddenScope forbidScript;
 
     ASSERT(!newChild.parentNode()); // Use insertBefore if you need to handle reparenting (and want DOM mutation events).
     ASSERT(!newChild.nextSibling());