Make sure the rootNode of a LiveNodeListBase is always a ContainerNode

Source/core/html/HTMLOptionsCollection.cpp

Index: Source/core/html/HTMLOptionsCollection.cpp
diff --git a/Source/core/html/HTMLOptionsCollection.cpp b/Source/core/html/HTMLOptionsCollection.cpp
index aae87b078b91e92c0d6e2a108c83a51ec86dfb58..90fa9d38a57c2e9452f07cc5ef13d7585a2f4fa2 100644
--- a/Source/core/html/HTMLOptionsCollection.cpp
+++ b/Source/core/html/HTMLOptionsCollection.cpp
@@ -30,14 +30,14 @@
 
 namespace WebCore {
 
-HTMLOptionsCollection::HTMLOptionsCollection(Node* select)
+HTMLOptionsCollection::HTMLOptionsCollection(ContainerNode* select)
     : HTMLCollection(select, SelectOptions, DoesNotOverrideItemAfter)
 {
     ASSERT(select->hasTagName(HTMLNames::selectTag));
     ScriptWrappable::init(this);
 }
 
-PassRefPtr<HTMLOptionsCollection> HTMLOptionsCollection::create(Node* select, CollectionType)
+PassRefPtr<HTMLOptionsCollection> HTMLOptionsCollection::create(ContainerNode* select, CollectionType)
 {
     return adoptRef(new HTMLOptionsCollection(select));
 }