Propagating the correct code in “Quickstart with Firebase Auth” into the sample app. #154
Description
Hello, the example code given in the documentation looks more up to date than the sample app, because, running the sample app in a chromium(not chrome) browser gave error The user turned off browser signin. I believe the reason is, the sample app uses only chrome-compatible elements, while the documentation doesn't, hence, the sample app must be overhauled; to be compatible with all chromium-based browsers, not only chrome. Thank you