[1.8] Guard firebug-service access, it doesn't have to be always available (e.g in FBTrace).
[1.8] Guard firebug-service access, it doesn't have to be always available (e.g in FBTrace).

http://code.google.com/p/fbug/source/detail?r=10011

firebug/tracing-console,firebug/tracing-console