Use "unsigned" rather than "unsigned long" for C++ code interacting with WebIDL's "unsigned long".

Source/modules/indexeddb/IDBCursor.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 46 matching lines @@
     void contextWillBeDestroyed() { m_backend.clear(); }
 
     // Implement the IDL
     const String& direction() const;
     ScriptValue key(ScriptState*);
     ScriptValue primaryKey(ScriptState*);
     ScriptValue value(ScriptState*);
     ScriptValue source(ScriptState*) const;
 
     IDBRequest* update(ScriptState*, const ScriptValue&, ExceptionState&);
-    void advance(unsigned long, ExceptionState&);
+    void advance(unsigned, ExceptionState&);
     void continueFunction(ScriptState*, const ScriptValue& key, ExceptionState&);
     void continuePrimaryKey(ScriptState*, const ScriptValue& key, const ScriptValue& primaryKey, ExceptionState&);
     IDBRequest* deleteFunction(ScriptState*, ExceptionState&);
 
     bool isKeyDirty() const { return m_keyDirty; }
     bool isPrimaryKeyDirty() const { return m_primaryKeyDirty; }
     bool isValueDirty() const { return m_valueDirty; }
 
     void continueFunction(IDBKey*, IDBKey* primaryKey, ExceptionState&);
     void postSuccessHandlerCallback();
@@ skipping 24 matching lines @@
     bool m_valueDirty;
     Member<IDBKey> m_key;
     Member<IDBKey> m_primaryKey;
     RefPtr<SharedBuffer> m_value;
     OwnPtr<Vector<WebBlobInfo> > m_blobInfo;
 };
 
 } // namespace blink
 
 #endif // IDBCursor_h