Cover both reported Chrome anonymous function stacktrace lines

The fix in #290 broke the fix in #238. This PR covers both cases. Not sure if it's the most elegant solution, but it's the best I could do within a limited time frame.
We can just apply a hammer to this and just do:  `(.*?)`

So the full line would be:

```javascript
/^\s*at (.*?) ?\(?((?:file|https?|chrome-extension):.*?):(\d+)(?::(\d+))?\)?\s*$/i
```

Your test case still passes with this.