Bug 1038606 - 1/4: Build MOZ_B2G_RIL on FxOS simullator.
copy RILContentHelper.js
Bug 1038606 - 2/4: Simulator icc/mobileconnection/cellbroadcast/voicemail backends
Bug 1038606 - 3/4: implement TelephonyService for FxOS simulator
Bug 1038606 - 4/4: Add devtools RDP support for telephony service
Add "Voice Calls" tab to App-Manager.