Removed header include cycles in indexeddb.

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 13 matching lines @@
  */
 
 #ifndef IDBIndex_h
 #define IDBIndex_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "modules/indexeddb/IDBCursor.h"
 #include "modules/indexeddb/IDBKeyPath.h"
 #include "modules/indexeddb/IDBKeyRange.h"
 #include "modules/indexeddb/IDBMetadata.h"
-#include "modules/indexeddb/IDBObjectStore.h"
 #include "modules/indexeddb/IDBRequest.h"
 #include "public/platform/WebIDBCursor.h"
 #include "public/platform/WebIDBDatabase.h"
 #include "wtf/Forward.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class ExceptionState;
 class IDBObjectStore;
@@ skipping 34 matching lines @@
 
     IDBIndexMetadata m_metadata;
     RefPtr<IDBObjectStore> m_objectStore;
     RefPtr<IDBTransaction> m_transaction;
     bool m_deleted;
 };
 
 } // namespace WebCore
 
 #endif // IDBIndex_h