IndexedDB: Replace IDL operation overloading with ScriptValue handling

Source/modules/indexeddb/IDBKeyRange.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 34 matching lines @@
     enum UpperBoundType {
         UpperBoundOpen,
         UpperBoundClosed
     };
 
     static PassRefPtr<IDBKeyRange> create(PassRefPtr<IDBKey> lower, PassRefPtr<IDBKey> upper, LowerBoundType lowerType, UpperBoundType upperType)
     {
         return adoptRef(new IDBKeyRange(lower, upper, lowerType, upperType));
     }
     static PassRefPtr<IDBKeyRange> create(PassRefPtr<IDBKey> prpKey);
+
+    // Null if the script value is null or undefined, the range if it is one, otherwise tries to convert to a key and throws if it fails.
+    static PassRefPtr<IDBKeyRange> fromScriptValue(ScriptExecutionContext*, const ScriptValue&, ExceptionState&);
+
     ~IDBKeyRange() { }
 
     // Implement the IDBKeyRange IDL
     PassRefPtr<IDBKey> lower() const { return m_lower; }
     PassRefPtr<IDBKey> upper() const { return m_upper; }
 
     ScriptValue lowerValue(ScriptExecutionContext*) const;
     ScriptValue upperValue(ScriptExecutionContext*) const;
     bool lowerOpen() const { return m_lowerType == LowerBoundOpen; }
     bool upperOpen() const { return m_upperType == UpperBoundOpen; }
@@ skipping 12 matching lines @@
 
     RefPtr<IDBKey> m_lower;
     RefPtr<IDBKey> m_upper;
     LowerBoundType m_lowerType;
     UpperBoundType m_upperType;
 };
 
 } // namespace WebCore
 
 #endif // IDBKeyRange_h