Bug 979134: share wrapDomRequestAsPromise. r=hsinyi
Bug 979134: convert test_mobile_networks.js to Promise. r=hsinyi
Bug 979134: convert test_mobile_voice_state.js to Promise. r=hsinyi
Bug 979134: convert test_mobile_data_state.js to Promise. r=hsinyi
Bug 979134: convert test_mobile_voice_location.js to Promise. r=hsinyi
Bug 979134: convert test_mobile_data_location.js to Promise. r=hsinyi
Bug 979134: convert test_mobile_operator_names.js to Promise. r=hsinyi