8014647: Allow class-based overrides to be initialized with a ScriptFunction
Reviewed-by: hannesw, jlaskey, sundar
Enumerable items in Array.prototype = 0
Enumerable items in Array = 0
Enumerable items in Boolean.prototype = 0
Enumerable items in Boolean = 0
Enumerable items in Date.prototype = 0
Enumerable items in Date = 0
Enumerable items in Function.prototype = 0
Enumerable items in Function = 0
Enumerable items in JSON = 0
Enumerable items in Math = 0
Enumerable items in Number.prototype = 0
Enumerable items in Number = 0
Enumerable items in Object.prototype = 0
Enumerable items in Object = 0
Enumerable items in String.prototype = 0
Enumerable items in String = 0