Stop Google Chrome From Asking to Make it the Default Browser
I had a strange problem show up out of the blue on Ubuntu 15.10 with Google Chrome Version 46.0.2490.80 (64-bit). It kept saying it wasn’t the default browse. It opened the ‘Set as default / Don’t ask again’ dialog each time it started.
In the Ubuntu Default Applications dialog Chrome was the default browser, but it still prompted every time it started. It got old real fast.
I did a bit of digging and found a workaround. Edit
..and change the following:
Save the file and reboot.
Until a bug fix comes round that’ll have to do. The same thing is currently happening with Chromium too.