Prepare to eliminate WebDOMStringList

Source/modules/indexeddb/IDBFactoryBackendImpl.cpp

 /*
  * Copyright (C) 2011 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 70 matching lines @@
 
 void IDBFactoryBackendImpl::getDatabaseNames(PassRefPtr<IDBCallbacks> callbacks, PassRefPtr<SecurityOrigin> securityOrigin, ScriptExecutionContext*, const String& dataDirectory)
 {
     IDB_TRACE("IDBFactoryBackendImpl::getDatabaseNames");
     RefPtr<IDBBackingStore> backingStore = openBackingStore(securityOrigin, dataDirectory);
     if (!backingStore) {
         callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error opening backing store for indexedDB.webkitGetDatabaseNames."));
         return;
     }
 
-    RefPtr<DOMStringList> databaseNames = DOMStringList::create();
-
-    Vector<String> foundNames = backingStore->getDatabaseNames();
-    for (Vector<String>::const_iterator it = foundNames.begin(); it != foundNames.end(); ++it)
-        databaseNames->append(*it);
-
-    callbacks->onSuccess(databaseNames.release());
+    callbacks->onSuccess(backingStore->getDatabaseNames());
 }
 
 void IDBFactoryBackendImpl::deleteDatabase(const String& name, PassRefPtr<IDBCallbacks> callbacks, PassRefPtr<SecurityOrigin> securityOrigin, ScriptExecutionContext*, const String& dataDirectory)
 {
     IDB_TRACE("IDBFactoryBackendImpl::deleteDatabase");
     const String uniqueIdentifier = computeUniqueIdentifier(name, securityOrigin.get());
 
     IDBDatabaseBackendMap::iterator it = m_databaseBackendMap.find(uniqueIdentifier);
     if (it != m_databaseBackendMap.end()) {
         // If there are any connections to the database, directly delete the
@@ skipping 71 matching lines @@
             callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error creating database backend for indexeddb.open."));
             return;
         }
     } else
         databaseBackend = it->value;
 
     databaseBackend->openConnection(callbacks, databaseCallbacks, transactionId, version);
 }
 
 } // namespace WebCore