IndexedDB: Return refs from a few const property accessors

Source/modules/indexeddb/IDBDatabase.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 41 matching lines @@
     static PassRefPtr<IDBDatabase> create(ScriptExecutionContext*, PassRefPtr<IDBDatabaseBackendInterface>, PassRefPtr<IDBDatabaseCallbacks>);
     ~IDBDatabase();
 
     void setMetadata(const IDBDatabaseMetadata& metadata) { m_metadata = metadata; }
     void indexCreated(int64_t objectStoreId, const IDBIndexMetadata&);
     void indexDeleted(int64_t objectStoreId, int64_t indexId);
     void transactionCreated(IDBTransaction*);
     void transactionFinished(IDBTransaction*);
 
     // Implement the IDL
-    const String name() const { return m_metadata.name; }
+    const String& name() const { return m_metadata.name; }
     PassRefPtr<IDBAny> version() const;
     PassRefPtr<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(ScriptExecutionContext* context, PassRefPtr<DOMStringList> scope, const String& mode, ExceptionState& es) { return transaction(context, *scope, mode, es); }
     PassRefPtr<IDBTransaction> transaction(ScriptExecutionContext*, const Vector<String>&, const String& mode, ExceptionState&);
     PassRefPtr<IDBTransaction> transaction(ScriptExecutionContext*, const String&, const String& mode, ExceptionState&);
     void deleteObjectStore(const String& name, ExceptionState&);
     void close();
@@ skipping 11 matching lines @@
     // ActiveDOMObject
     virtual bool hasPendingActivity() const OVERRIDE;
     virtual void stop() OVERRIDE;
 
     // EventTarget
     virtual const AtomicString& interfaceName() const;
     virtual ScriptExecutionContext* scriptExecutionContext() const;
 
     bool isClosePending() const { return m_closePending; }
     void forceClose();
-    const IDBDatabaseMetadata metadata() const { return m_metadata; }
+    const IDBDatabaseMetadata& metadata() const { return m_metadata; }
     void enqueueEvent(PassRefPtr<Event>);
 
     using EventTarget::dispatchEvent;
     virtual bool dispatchEvent(PassRefPtr<Event>) OVERRIDE;
 
     int64_t findObjectStoreId(const String& name) const;
     bool containsObjectStore(const String& name) const
     {
         return findObjectStoreId(name) != IDBObjectStoreMetadata::InvalidId;
     }
@@ skipping 44 matching lines @@
     // Keep track of the versionchange events waiting to be fired on this
     // database so that we can cancel them if the database closes.
     Vector<RefPtr<Event> > m_enqueuedEvents;
 
     RefPtr<IDBDatabaseCallbacks> m_databaseCallbacks;
 };
 
 } // namespace WebCore
 
 #endif // IDBDatabase_h