User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.130 Safari/537.36

Opening this bug after a discussion in Bug 968241 : https://bugzilla.mozilla.org/show_bug.cgi?id=968241#c67 The recommended way to log errors is to use Cu.reportError : - already used a lot in the devtools - console.error now needs to be bound to console when passed as a callback (Bug 989619) When creating this bug, Bugzilla suggested Bug 877389 as a duplicate. Bug 877389 actually suggests to prefer console.error to Cu.reportError. It was opened before console.error required a console.scope. We should either close Bug 877389 or close this bug. :pbro : What do you think ?

Swamped at the moment, can't really investigate this. Transferring to Panos who will know better anyway.

Bug 877389 is about the entire Firefox frontend code, not just devtools, but I think it's the right direction. We are slowly working towards making both devtools and Firefox more webby and using XPCOM methods isn't going to get us there. Another case-specific argument against Cu.reportError is that it's not present in every embedding of devtools (e.g. Thunderbird, xulrunner-based apps, etc.), so we explicitly avoid it in debugger server code. I think this is a WONTFIX.

Ok thanks for the heads up :)