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

Source/modules/indexeddb/IDBDatabase.h

Index: Source/modules/indexeddb/IDBDatabase.h
diff --git a/Source/modules/indexeddb/IDBDatabase.h b/Source/modules/indexeddb/IDBDatabase.h
index f2f72f551d7e6fd7b72c45a0b7d648495f76b877..bfaa6837e672dda413adafe6287cdab54d336f41 100644
--- a/Source/modules/indexeddb/IDBDatabase.h
+++ b/Source/modules/indexeddb/IDBDatabase.h
@@ -67,11 +67,11 @@ public:
     // Implement the IDL
     const String& name() const { return m_metadata.name; }
     ScriptValue version(NewScriptState*) const;
-    PassRefPtr<DOMStringList> objectStoreNames() const;
+    PassRefPtrWillBeRawPtr<DOMStringList> objectStoreNames() const;
 
     PassRefPtr<IDBObjectStore> createObjectStore(const String& name, const Dictionary&, ExceptionState&);
     PassRefPtr<IDBObjectStore> createObjectStore(const String& name, const IDBKeyPath&, bool autoIncrement, ExceptionState&);
-    PassRefPtr<IDBTransaction> transaction(ExecutionContext* context, PassRefPtr<DOMStringList> scope, const String& mode, ExceptionState& exceptionState) { return transaction(context, *scope, mode, exceptionState); }
+    PassRefPtr<IDBTransaction> transaction(ExecutionContext* context, PassRefPtrWillBeRawPtr<DOMStringList> scope, const String& mode, ExceptionState& exceptionState) { return transaction(context, *scope, mode, exceptionState); }
     PassRefPtr<IDBTransaction> transaction(ExecutionContext*, const Vector<String>&, const String& mode, ExceptionState&);
     PassRefPtr<IDBTransaction> transaction(ExecutionContext*, const String&, const String& mode, ExceptionState&);
     void deleteObjectStore(const String& name, ExceptionState&);