Oilpan: move DOM string collection objects to the Oilpan heap.

Source/modules/indexeddb/InspectorIndexedDBAgent.cpp

Index: Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
diff --git a/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp b/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
index 178ab8eb73915ee3e0fc36944fc158cd71aeb315..2eff633af4491477d2149f4408eca4a7650f2bc4 100644
--- a/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
+++ b/Source/modules/indexeddb/InspectorIndexedDBAgent.cpp
@@ -117,7 +117,7 @@ public:
             return;
         }
 
-        RefPtr<DOMStringList> databaseNamesList = requestResult->domStringList();
+        RefPtrWillBeRawPtr<DOMStringList> databaseNamesList = requestResult->domStringList();
         RefPtr<TypeBuilder::Array<String> > databaseNames = TypeBuilder::Array<String>::create();
         for (size_t i = 0; i < databaseNamesList->length(); ++i)
             databaseNames->addItem(databaseNamesList->item(i));