IndexedDB: Return refs from a few const property accessors

Source/modules/indexeddb/IDBIndex.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 33 matching lines @@
 
 class IDBIndex : public ScriptWrappable, public RefCounted<IDBIndex> {
 public:
     static PassRefPtr<IDBIndex> create(const IDBIndexMetadata& metadata, IDBObjectStore* objectStore, IDBTransaction* transaction)
     {
         return adoptRef(new IDBIndex(metadata, objectStore, transaction));
     }
     ~IDBIndex();
 
     // Implement the IDL
-    const String name() const { return m_metadata.name; }
+    const String& name() const { return m_metadata.name; }
     PassRefPtr<IDBObjectStore> objectStore() const { return m_objectStore; }
     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; }
     bool unique() const { return m_metadata.unique; }
     bool multiEntry() const { return m_metadata.multiEntry; }
     int64_t id() const { return m_metadata.id; }
 
     PassRefPtr<IDBRequest> openCursor(ScriptExecutionContext*, PassRefPtr<IDBKeyRange>, const String& direction, ExceptionState&);
     PassRefPtr<IDBRequest> openCursor(ScriptExecutionContext*, const ScriptValue& key, const String& direction, ExceptionState&);
     PassRefPtr<IDBRequest> count(ScriptExecutionContext*, PassRefPtr<IDBKeyRange>, ExceptionState&);
     PassRefPtr<IDBRequest> count(ScriptExecutionContext*, const ScriptValue& key, ExceptionState&);
     PassRefPtr<IDBRequest> openKeyCursor(ScriptExecutionContext*, PassRefPtr<IDBKeyRange>, const String& direction, ExceptionState&);
     PassRefPtr<IDBRequest> openKeyCursor(ScriptExecutionContext*, const ScriptValue& key, const String& direction, ExceptionState&);
@@ skipping 12 matching lines @@
 
     IDBIndexMetadata m_metadata;
     RefPtr<IDBObjectStore> m_objectStore;
     RefPtr<IDBTransaction> m_transaction;
     bool m_deleted;
 };
 
 } // namespace WebCore
 
 #endif // IDBIndex_h