We have a Firebug extension that runs well on top of Firebug 2.x. It is XUL/XPCOM based and is not multi-process compatible. In the link (https://wiki.mozilla.org/Electrolysis#Schedule), it is not clear to me whether FF 45 will contain the support of Electrolysis or not (it says “tbd”). If it contains it, would there be an option (like the one in Developer Edition - check box of “Enable multi-process Firefox Developer Edition”) to disable multi-process? Would the multi-process be enabled by default or disabled by default? What about FF 45 ESR?
As far as I understand, Firebug 2.x is not compatible with Electrolysis. If Eletrolysis can not be disabled on FF 45 ESR, Firebug 2.x will not be able to run, therefore our Firebug extension will not be able to run either.