IndexedDB: Rely on bindings for enum validation

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 29 matching lines @@
 
 class ExceptionState;
 class IDBAny;
 class IDBTransaction;
 class IDBValue;
 class ScriptState;
 
 class IDBCursor : public GarbageCollectedFinalized<IDBCursor>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static WebIDBCursorDirection stringToDirection(const String& modeString, ExceptionState&);
+    static WebIDBCursorDirection stringToDirection(const String& modeString);
 
     static IDBCursor* create(PassOwnPtr<WebIDBCursor>, WebIDBCursorDirection, IDBRequest*, IDBAny* source, IDBTransaction*);
     virtual ~IDBCursor();
     DECLARE_TRACE();
     void contextWillBeDestroyed() { m_backend.clear(); }
 
     // Implement the IDL
     const String& direction() const;
     ScriptValue key(ScriptState*);
     ScriptValue primaryKey(ScriptState*);
@@ skipping 36 matching lines @@
     bool m_primaryKeyDirty;
     bool m_valueDirty;
     Member<IDBKey> m_key;
     Member<IDBKey> m_primaryKey;
     RefPtr<IDBValue> m_value;
 };
 
 } // namespace blink
 
 #endif // IDBCursor_h