Bug 1513186 - Still use MLS for nightly & early beta r=jdm

Differential Revision: https://phabricator.services.mozilla.com/D14140

--HG--
extra : moz-landing-system : lando

browser/app/profile/firefox.js

@@ -1354,9 +1354,12 @@ pref("dom.debug.propagate_gesture_events_through_content", false);
 
 // All the Geolocation preferences are here.
 //
+#ifndef EARLY_BETA_OR_EARLIER
 pref("geo.wifi.uri", "https://www.googleapis.com/geolocation/v1/geolocate?key=%GOOGLE_API_KEY%");
-// MLS URL:
-// pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
+#else
+// Use MLS on Nightly and early Beta.
+pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
+#endif
 
 #ifdef XP_MACOSX
 pref("geo.provider.use_corelocation", true);