IndexedDB: Return refs from a few const property accessors

Source/modules/indexeddb/IDBObjectStore.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 39 matching lines @@
 class IDBObjectStore : public ScriptWrappable, public RefCounted<IDBObjectStore> {
 public:
     static PassRefPtr<IDBObjectStore> create(const IDBObjectStoreMetadata& metadata, IDBTransaction* transaction)
     {
         return adoptRef(new IDBObjectStore(metadata, transaction));
     }
     ~IDBObjectStore() { }
 
     // Implement the IDBObjectStore IDL
     int64_t id() const { return m_metadata.id; }
-    const String name() const { return m_metadata.name; }
+    const String& name() const { return m_metadata.name; }
     PassRefPtr<IDBAny> keyPathAny() const { return IDBAny::create(m_metadata.keyPath); }
-    const IDBKeyPath keyPath() const { return m_metadata.keyPath; }
+    const IDBKeyPath& keyPath() const { return m_metadata.keyPath; }
     PassRefPtr<DOMStringList> indexNames() const;
     PassRefPtr<IDBTransaction> transaction() const { return m_transaction; }
     bool autoIncrement() const { return m_metadata.autoIncrement; }
 
     PassRefPtr<IDBRequest> openCursor(ScriptExecutionContext* context, PassRefPtr<IDBKeyRange> range, const String& direction, ExceptionState& es) { return openCursor(context, range, direction, IDBDatabaseBackendInterface::NormalTask, es); }
     PassRefPtr<IDBRequest> openCursor(ScriptExecutionContext*, const ScriptValue& key, const String& direction, ExceptionState&);
     PassRefPtr<IDBRequest> get(ScriptExecutionContext*, const ScriptValue& key, ExceptionState&);
     PassRefPtr<IDBRequest> get(ScriptExecutionContext*, PassRefPtr<IDBKeyRange>, ExceptionState&);
     PassRefPtr<IDBRequest> add(ScriptState*, ScriptValue&, const ScriptValue& key, ExceptionState&);
     PassRefPtr<IDBRequest> put(ScriptState*, ScriptValue&, const ScriptValue& key, ExceptionState&);
@@ skipping 42 matching lines @@
     RefPtr<IDBTransaction> m_transaction;
     bool m_deleted;
 
     typedef HashMap<String, RefPtr<IDBIndex> > IDBIndexMap;
     IDBIndexMap m_indexMap;
 };
 
 } // namespace WebCore
 
 #endif // IDBObjectStore_h