Customize the parent TControl class for active control classes.
TActiveControlAdapter instantiates a common base active control class
throught the {@link getBaseActiveControl BaseActiveControl} property.
The type of BaseActiveControl can be provided in the second parameter in the
constructor. Default is TBaseActiveControl or TBaseActiveCallbackControl if
the control adapted implements ICallbackEventHandler.
TActiveControlAdapter will tracking viewstate changes to update the
corresponding client-side properties.