The Mobile Connection API looks like it could be useful for Web Apps on Android. Let's make it work. https://wiki.mozilla.org/WebAPI/WebMobileConnection
Per bug 1235869, we're going to disable the Android web runtime, so we won't fix this bug in it. (This is part of a bulk resolution of bugs in the Firefox for Android::Web Apps component, from which I attempted to exclude bugs that are not specific to the runtime, but it's possible that I included one accidentally. If so, I'm sorry, and please reopen the bug!)