Oilpan: move LiveNodeList collections to the heap.

Source/core/dom/Node.cpp

Index: Source/core/dom/Node.cpp
diff --git a/Source/core/dom/Node.cpp b/Source/core/dom/Node.cpp
index 733c520ce69e728867b0972f945d802cbb6e8eca..2d6966b2cb31b64fb0ac7a00dea6604c99407c54 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -375,7 +375,7 @@ void Node::setNodeValue(const String&)
     // By default, setting nodeValue has no effect.
 }
 
-PassRefPtr<NodeList> Node::childNodes()
+PassRefPtrWillBeRawPtr<NodeList> Node::childNodes()
 {
     if (isContainerNode())
         return ensureRareData().ensureNodeLists().ensureChildNodeList(toContainerNode(*this));
@@ -2464,7 +2464,7 @@ void Node::updateAncestorConnectedSubframeCountForInsertion() const
         node->incrementConnectedSubframeCount(count);
 }
 
-PassRefPtr<NodeList> Node::getDestinationInsertionPoints()
+PassRefPtrWillBeRawPtr<NodeList> Node::getDestinationInsertionPoints()
 {
     document().updateDistributionForNodeIfNeeded(this);
     Vector<InsertionPoint*, 8> insertionPoints;