This no longer works on windows 8 (see bug 760023) so we are going to disable it.
Created attachment 629896 [details] [diff] [review]
Review to land directly on m-c.
On Win8 this checkbox is handled by an OS prompt at install-time.
By the way, for reviewing, both win2008 R2 and Win7 are v6.1
I tried this on a Win7 machine and it showed the default browser checkbox, on a win8 machine it did not.
(In reply to Brian R. Bondy [:bbondy] from comment #2)
> I tried this on a Win7 machine and it showed the default browser checkbox,
> on a win8 machine it did not.
Verified fixed on Nightly 2012-06-20.