Google login doesn't work for some browsers

[joshheinrichs]

Uncaught ReferenceError: gapi is not defined      google-signin.html:626 
Polymer.signIn                                    google-signin.html:626 
events.dispatchMethod                             polymer.js:9131 
(anonymous function)                              polymer.js:10715

This is likely an issue with popup blockers, since my login popup doesn't appear when clicked, and I was getting the same issue on Ken's simple login page. Not sure if we can do anything about this, but it'd be good if we could at least notify the user.

[joshheinrichs]

Notifying the user could be done pretty easily by catching the exception that's thrown and showing a paper-toast with an error message.

[joshheinrichs]

Interestingly, my version of chrome works in incognito mode. Might be a plugin conflict.