Update WebKit IDLs after chrome roll.

Modules/indexeddb/DOMWindowIndexedDatabase.idl

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * 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
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 [
-    Conditional=INDEXED_DATABASE,
     Supplemental=DOMWindow
 ] interface DOMWindowIndexedDatabase {
     [ImplementedAs=indexedDB,V8MeasureAs=PrefixedIndexedDB] readonly attribute IDBFactory webkitIndexedDB;
 
     attribute IDBCursorConstructor webkitIDBCursor;
     attribute IDBDatabaseConstructor webkitIDBDatabase;
     attribute IDBFactoryConstructor webkitIDBFactory;
     attribute IDBIndexConstructor webkitIDBIndex;
     attribute IDBKeyRangeConstructor webkitIDBKeyRange;
     attribute IDBObjectStoreConstructor webkitIDBObjectStore;
     attribute IDBRequestConstructor webkitIDBRequest;
     attribute IDBTransactionConstructor webkitIDBTransaction;
 
     [V8MeasureAs=UnprefixedIndexedDB] readonly attribute IDBFactory indexedDB;
 
     attribute IDBCursorConstructor IDBCursor;
     attribute IDBCursorWithValueConstructor IDBCursorWithValue;
     attribute IDBDatabaseConstructor IDBDatabase;
     attribute IDBFactoryConstructor IDBFactory;
     attribute IDBIndexConstructor IDBIndex;
     attribute IDBKeyRangeConstructor IDBKeyRange;
     attribute IDBObjectStoreConstructor IDBObjectStore;
     attribute IDBOpenDBRequestConstructor IDBOpenDBRequest;
     attribute IDBRequestConstructor IDBRequest;
     attribute IDBTransactionConstructor IDBTransaction;
     attribute IDBVersionChangeEventConstructor IDBVersionChangeEvent;
 };
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