I'm testing one of my Phaser Games within a Webview, built using just Android Studio and Firebase (game in Phaser) I didn't use Cordova it cluttered my Android project and didn't seem to add any speed..etc , Here is the web and the Google Play link:
http://www.munchiegames.com/play/serve_ramen
https://play.google.com/store/apps/details?id=serveramen.munchiegames.com.serve_ramen