Comment 1 for bug 1036726

I think we should add a heuristic for figuring out if the default browser is one supported and you have the right extensions installed and choose something different if needed.

For example if you have the firefox webapps extension installed and not the chromium extension, but chrome or chromium is your default browser, unity-webapps-runner should launch firefox instead of chrome because it can provide the optimal unity webapps experience.