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 // Owning elements and attribute names are attached to scripts compiled

 // off-thread.

 var g = newGlobal();

 var dbg = new Debugger;

 var gDO = dbg.addDebuggee(g);

 var elt = new g.Object;

 var eltDO = gDO.makeDebuggeeValue(elt);

 var log = '';

 dbg.onDebuggerStatement = function (frame) {

   log += 'd';

   var source = frame.script.source;

   assertEq(source.element, eltDO);

   assertEq(source.elementAttributeName, 'mass');

 };

 g.offThreadCompileScript('debugger;',

                          { element: elt,

                            elementAttributeName: 'mass' });

 log += 'o';

 g.runOffThreadScript();

 assertEq(log, 'od');