This introduce one new flag: config_show_location_scanning Which when set to false, will hide "Scanning" in Location preference. Some OEMs may control Bluetooth/Wi-Fi scanning themselves, so they may want to hide the page from users. Bug: 62418710 Test: make RunSettingsRoboTests ROBOTEST_FILTER=LocationScanningPreferenceControllerTest Change-Id: I19f0020a2c94f70b3b7956529f57af098ccc79fd