Add support for authWithOAuthRedirect

Is there any reason why authWithOAuthRedirect is not supported in emberfire? If none, then I think it should be added as a fallback when authWithOAuthPopup doesn’t work.

As said in the Firebase docs:

Browser popups and redirects are not available on all platforms or browser environments. Popups are not available in Chrome for iOS, iOS Preview Panes, or local, file:// URLs. Redirects are not available in PhoneGap / Cordova, or local, file:// URLs. Therefore, it is recommended that you use a combination of both authentication methods to cover all environments.

[tstirrat]

#344 adds the redirect functionality

this.get('session').open('firebase', { provider: 'google', redirect: true });

[tstirrat]

I’m giving the ability to programatically select redirects. The rest is up to the developer to work out what works and what doesn’t for certain platforms.

Given that you lose app state, I don’t think an auto-fallback option is doable – it does not have feature parity with popups.

Use redirect: true at your own peril. The only reason I added it, is so that you don’t need to manually get the ref and call the function yourself.