Tests that when console.trace is called in eval'ed script ending with //# sourceURL=url it will dump a stack trace that will have the url as the script source. Bug 47252.

evalURL.js:5 console.trace
b @ evalURL.js:5
a @ evalURL.js:10
evalSource @ evalURL.js:13
eval @ evalURL.js:14
(anonymous) @ console-trace-in-eval.js:31
setTimeout
doEvalSource @ console-trace-in-eval.js:30
(anonymous) @ console-trace-in-eval.js:41